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Publisher: Cambridge University Press   (Total: 365 journals)

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Showing 1 - 200 of 365 Journals sorted alphabetically
Acta Neuropsychiatrica     Hybrid Journal   (Followers: 4, SJR: 0.421, h-index: 23)
Acta Numerica     Hybrid Journal   (Followers: 3, SJR: 8.044, h-index: 35)
Advances in Animal Biosciences     Full-text available via subscription   (Followers: 8)
Advances in Applied Mathematics and Mechanics     Full-text available via subscription   (SJR: 0.74, h-index: 14)
Africa     Hybrid Journal   (Followers: 19, SJR: 1.02, h-index: 28)
African Studies Review     Full-text available via subscription   (Followers: 18, SJR: 0.532, h-index: 13)
Ageing & Society     Hybrid Journal   (Followers: 38, SJR: 0.87, h-index: 55)
Agricultural and Resource Economics Review     Open Access   (Followers: 5, SJR: 0.326, h-index: 19)
AI EDAM     Hybrid Journal   (SJR: 0.438, h-index: 40)
AJS Review     Full-text available via subscription   (Followers: 2, SJR: 0.203, h-index: 4)
American Political Science Review     Hybrid Journal   (Followers: 248, SJR: 6.112, h-index: 127)
Anatolian Studies     Full-text available via subscription   (Followers: 4, SJR: 0.482, h-index: 10)
Ancient Mesoamerica     Hybrid Journal   (Followers: 10, SJR: 0.507, h-index: 29)
Anglo-Saxon England     Hybrid Journal   (Followers: 33, SJR: 0.144, h-index: 12)
animal     Hybrid Journal   (Followers: 3, SJR: 1.098, h-index: 43)
Animal Health Research Reviews     Hybrid Journal   (Followers: 3, SJR: 0.838, h-index: 41)
Animal Science     Full-text available via subscription   (Followers: 9)
Annals of Actuarial Science     Full-text available via subscription   (Followers: 1)
Annual of the British School at Athens     Full-text available via subscription   (Followers: 15, SJR: 0.101, h-index: 9)
Annual Review of Applied Linguistics     Hybrid Journal   (Followers: 36, SJR: 0.753, h-index: 22)
Antarctic Science     Hybrid Journal   (Followers: 1, SJR: 0.728, h-index: 55)
Antichthon     Full-text available via subscription   (Followers: 1, SJR: 0.126, h-index: 2)
Antiquaries J., The     Full-text available via subscription   (Followers: 8, SJR: 0.156, h-index: 3)
Antiquity     Hybrid Journal   (Followers: 26, SJR: 1.133, h-index: 54)
ANZIAM J.     Open Access   (Followers: 1, SJR: 0.151, h-index: 17)
Applied Psycholinguistics     Hybrid Journal   (Followers: 19, SJR: 1.005, h-index: 59)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 8, SJR: 0.339, h-index: 4)
Arabic Sciences and Philosophy     Hybrid Journal   (Followers: 9, SJR: 0.138, h-index: 13)
Arbor Clinical Nutrition Updates     Full-text available via subscription   (Followers: 3)
Archaeological Dialogues     Hybrid Journal   (Followers: 33, SJR: 0.67, h-index: 17)
Archaeological Reports     Full-text available via subscription   (Followers: 5, SJR: 0.101, h-index: 1)
arq: Architectural Research Quarterly     Hybrid Journal   (Followers: 7, SJR: 0.101, h-index: 3)
Asian J. of Comparative Law     Hybrid Journal   (Followers: 9, SJR: 0.127, h-index: 5)
Asian J. of Intl. Law     Hybrid Journal   (Followers: 12, SJR: 0.218, h-index: 5)
Asian J. of Law and Society     Hybrid Journal   (Followers: 6, SJR: 0.179, h-index: 3)
Astin Bulletin     Full-text available via subscription   (Followers: 1, SJR: 0.979, h-index: 19)
Australasian J. of Organisational Psychology     Hybrid Journal   (Followers: 8)
Australasian J. of Special Education     Full-text available via subscription   (Followers: 7, SJR: 0.199, h-index: 6)
Australian J. of Environmental Education     Full-text available via subscription   (Followers: 7, SJR: 0.299, h-index: 5)
Australian J. of Indigenous Education, The     Full-text available via subscription   (Followers: 9, SJR: 0.293, h-index: 4)
Australian J. of Rehabilitation Counseling     Full-text available via subscription   (Followers: 4, SJR: 0.114, h-index: 1)
Austrian History Yearbook     Full-text available via subscription   (Followers: 8, SJR: 0.127, h-index: 3)
Behavioral and Brain Sciences     Hybrid Journal   (Followers: 32, SJR: 0.826, h-index: 127)
Behaviour Change     Full-text available via subscription   (Followers: 12, SJR: 0.362, h-index: 27)
Behavioural and Cognitive Psychotherapy     Hybrid Journal   (Followers: 133, SJR: 0.831, h-index: 47)
Bilingualism: Language and Cognition     Hybrid Journal   (Followers: 37, SJR: 1.359, h-index: 33)
Biofilms     Full-text available via subscription   (Followers: 1)
Bird Conservation Intl.     Hybrid Journal   (Followers: 23, SJR: 0.831, h-index: 29)
BJPsych Advances     Full-text available via subscription   (Followers: 51)
Brain Impairment     Full-text available via subscription   (Followers: 2, SJR: 0.31, h-index: 13)
Breast Cancer Online     Full-text available via subscription   (Followers: 4)
Britannia     Full-text available via subscription   (Followers: 7, SJR: 0.112, h-index: 0)
British Actuarial J.     Full-text available via subscription  
British Catholic History     Hybrid Journal   (Followers: 1)
British J. for the History of Science     Hybrid Journal   (Followers: 20, SJR: 0.804, h-index: 21)
British J. of Anaesthetic and Recovery Nursing     Full-text available via subscription   (Followers: 7)
British J. of Music Education     Hybrid Journal   (Followers: 23, SJR: 0.391, h-index: 8)
British J. Of Nutrition     Hybrid Journal   (Followers: 73, SJR: 1.587, h-index: 139)
British J. of Political Science     Hybrid Journal   (Followers: 157, SJR: 2.505, h-index: 63)
British J. of Psychiatry     Hybrid Journal   (Followers: 177, SJR: 2.674, h-index: 178)
Bulletin of Entomological Research     Hybrid Journal   (Followers: 10, SJR: 0.918, h-index: 54)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2, SJR: 1.405, h-index: 26)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 1, SJR: 0.488, h-index: 30)
Bulletin of the School of Oriental and African Studies     Hybrid Journal   (Followers: 18, SJR: 0.122, h-index: 11)
Business and Human Rights J.     Full-text available via subscription   (Followers: 3)
Business Ethics Quarterly     Full-text available via subscription   (Followers: 12, SJR: 1.534, h-index: 46)
Business History Review     Full-text available via subscription   (Followers: 14, SJR: 0.291, h-index: 20)
Cambridge Archaeological J.     Hybrid Journal   (Followers: 120, SJR: 0.743, h-index: 32)
Cambridge Classical J.     Full-text available via subscription   (Followers: 18, SJR: 0.101, h-index: 6)
Cambridge J. of Postcolonial Literary Inquiry     Hybrid Journal   (Followers: 6)
Cambridge Law J.     Hybrid Journal   (Followers: 152, SJR: 0.173, h-index: 3)
Cambridge Opera J.     Hybrid Journal   (Followers: 5, SJR: 0.227, h-index: 9)
Cambridge Quarterly of Healthcare Ethics     Hybrid Journal   (Followers: 11, SJR: 0.295, h-index: 25)
Camden Fifth Series     Full-text available via subscription   (Followers: 2)
Canadian Entomologist     Hybrid Journal   (Followers: 5, SJR: 0.388, h-index: 34)
Canadian J. of Emergency Medicine     Hybrid Journal   (Followers: 11, SJR: 0.532, h-index: 32)
Canadian J. of Law & Jurisprudence     Full-text available via subscription   (Followers: 9)
Canadian J. of Law and Society     Hybrid Journal   (Followers: 19, SJR: 0.247, h-index: 6)
Canadian J. of Neurological Sciences     Full-text available via subscription   (SJR: 0.477, h-index: 53)
Canadian J. of Political Science/Revue canadienne de science politique     Full-text available via subscription   (Followers: 23, SJR: 1.161, h-index: 23)
Canadian J. on Aging     Hybrid Journal   (Followers: 10, SJR: 0.292, h-index: 29)
Canadian Yearbook of Intl. Law / Annuaire canadien de droit international     Full-text available via subscription   (Followers: 1)
Cardiology in the Young     Hybrid Journal   (Followers: 32, SJR: 0.312, h-index: 40)
Central European History     Full-text available via subscription   (Followers: 30, SJR: 0.201, h-index: 14)
Children Australia     Partially Free   (Followers: 2, SJR: 0.191, h-index: 2)
China Quarterly     Hybrid Journal   (Followers: 49, SJR: 1.058, h-index: 54)
Chinese J. of Agricultural Biotechnology     Full-text available via subscription   (Followers: 4)
Church History: Studies in Christianity and Culture     Full-text available via subscription   (Followers: 72, SJR: 0.113, h-index: 16)
Classical Quarterly     Full-text available via subscription   (Followers: 28, SJR: 0.151, h-index: 24)
Classical Review     Full-text available via subscription   (Followers: 24)
CNS Spectrums     Hybrid Journal   (Followers: 3, SJR: 0.885, h-index: 60)
Cognitive Behaviour Therapist     Hybrid Journal   (Followers: 13)
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4, SJR: 1.013, h-index: 35)
Communications in Computational Physics     Full-text available via subscription   (Followers: 2, SJR: 1.198, h-index: 34)
Comparative Studies in Society and History     Full-text available via subscription   (Followers: 45, SJR: 0.725, h-index: 36)
Compositio Mathematica     Full-text available via subscription   (Followers: 1, SJR: 2.965, h-index: 37)
Contemporary European History     Hybrid Journal   (Followers: 25, SJR: 0.369, h-index: 16)
Continuity and Change     Hybrid Journal   (Followers: 12, SJR: 0.266, h-index: 19)
Dance Research J.     Full-text available via subscription   (Followers: 8, SJR: 0.144, h-index: 5)
Development and Psychopathology     Hybrid Journal   (Followers: 8, SJR: 2.342, h-index: 131)
Dialogue Canadian Philosophical Review/Revue canadienne de philosophie     Full-text available via subscription   (Followers: 3, SJR: 0.126, h-index: 7)
Diamond Light Source Proceedings     Full-text available via subscription  
Disaster Medicine and Public Health Preparedness     Hybrid Journal   (Followers: 11, SJR: 0.274, h-index: 24)
Du Bois Review: Social Science Research on Race     Full-text available via subscription   (Followers: 8, SJR: 0.307, h-index: 5)
Early China     Hybrid Journal   (Followers: 3)
Early Music History     Hybrid Journal   (Followers: 8, SJR: 0.164, h-index: 8)
Earth and Environmental Science Transactions of the Royal Society of Edinburgh     Hybrid Journal   (Followers: 5, SJR: 0.325, h-index: 41)
East Asian J. on Applied Mathematics     Full-text available via subscription   (SJR: 0.424, h-index: 6)
Ecclesiastical Law J.     Full-text available via subscription   (Followers: 6, SJR: 0.1, h-index: 2)
Econometric Theory     Hybrid Journal   (Followers: 16, SJR: 2.219, h-index: 52)
Economics and Philosophy     Hybrid Journal   (Followers: 16, SJR: 0.624, h-index: 19)
Edinburgh J. of Botany     Hybrid Journal   (SJR: 0.324, h-index: 20)
Eighteenth-Century Music     Hybrid Journal   (Followers: 11, SJR: 0.1, h-index: 4)
English Language and Linguistics     Hybrid Journal   (Followers: 24, SJR: 0.387, h-index: 18)
English Profile J.     Hybrid Journal   (Followers: 2)
English Today     Hybrid Journal   (Followers: 9, SJR: 0.302, h-index: 4)
Enterprise & Society : The Intl. J. of Business History     Hybrid Journal   (Followers: 16, SJR: 0.452, h-index: 17)
Environment and Development Economics     Hybrid Journal   (Followers: 32, SJR: 0.617, h-index: 43)
Environmental Conservation     Hybrid Journal   (Followers: 58, SJR: 1.09, h-index: 66)
Environmental Practice     Full-text available via subscription   (Followers: 3, SJR: 0.304, h-index: 15)
Epidemiology & Infection     Hybrid Journal   (Followers: 15, SJR: 1.32, h-index: 85)
Epidemiology and Psychiatric Sciences     Hybrid Journal   (Followers: 3, SJR: 0.699, h-index: 28)
Episteme     Hybrid Journal   (Followers: 11, SJR: 0.678, h-index: 2)
Equine and Comparative Exercise Physiology     Full-text available via subscription   (Followers: 6)
Ergodic Theory and Dynamical Systems     Hybrid Journal   (Followers: 2, SJR: 1.456, h-index: 43)
Ethics & Intl. Affairs     Full-text available via subscription   (Followers: 11, SJR: 0.464, h-index: 6)
European Constitutional Law Review (EuConst)     Full-text available via subscription   (Followers: 31, SJR: 1.269, h-index: 15)
European J. of Applied Mathematics     Hybrid Journal   (SJR: 0.939, h-index: 34)
European J. of Sociology     Hybrid Journal   (Followers: 28, SJR: 0.241, h-index: 26)
European Political Science Review     Hybrid Journal   (Followers: 20, SJR: 0.524, h-index: 5)
European Review     Hybrid Journal   (Followers: 17, SJR: 0.119, h-index: 17)
Experimental Agriculture     Hybrid Journal   (Followers: 12, SJR: 0.486, h-index: 31)
Expert Reviews in Molecular Medicine     Hybrid Journal   (Followers: 1, SJR: 1.776, h-index: 60)
Fetal and Maternal Medicine Review     Hybrid Journal   (Followers: 4, SJR: 0.178, h-index: 14)
Financial History Review     Full-text available via subscription   (Followers: 14, SJR: 0.342, h-index: 11)
Foreign Policy Bulletin     Hybrid Journal   (Followers: 6)
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Genetics Research     Hybrid Journal   (Followers: 4, SJR: 0.52, h-index: 59)
Geological Magazine     Hybrid Journal   (Followers: 16, SJR: 1.119, h-index: 64)
Glasgow Mathematical J.     Full-text available via subscription   (Followers: 1, SJR: 0.748, h-index: 25)
Global Constitutionalism     Hybrid Journal   (Followers: 16)
Global Mental Health     Open Access   (Followers: 6)
Government and Opposition     Full-text available via subscription   (Followers: 20, SJR: 0.611, h-index: 32)
Greece & Rome     Partially Free   (Followers: 21, SJR: 0.136, h-index: 15)
Hague J. on the Rule of Law     Full-text available via subscription   (Followers: 12, SJR: 0.12, h-index: 11)
Harvard Theological Review     Full-text available via subscription   (Followers: 63, SJR: 0.237, h-index: 17)
Health Economics, Policy and Law     Hybrid Journal   (Followers: 25, SJR: 0.441, h-index: 21)
Hegel Bulletin     Full-text available via subscription   (Followers: 1)
High Power Laser Science and Engineering     Open Access   (Followers: 3)
Historical J.     Hybrid Journal   (Followers: 32, SJR: 0.337, h-index: 23)
History in Africa     Full-text available via subscription   (Followers: 8)
Horizons     Partially Free   (Followers: 1, SJR: 0.112, h-index: 3)
Industrial and Organizational Psychology     Hybrid Journal   (Followers: 20, SJR: 0.47, h-index: 18)
Infection Control and Hospital Epidemiology     Full-text available via subscription   (Followers: 34, SJR: 1.985, h-index: 108)
Intl. & Comparative Law Quarterly     Full-text available via subscription   (Followers: 163, SJR: 0.324, h-index: 25)
Intl. J. of Asian Studies     Hybrid Journal   (Followers: 12, SJR: 0.107, h-index: 1)
Intl. J. of Astrobiology     Hybrid Journal   (Followers: 2, SJR: 0.384, h-index: 18)
Intl. J. of Cultural Property     Full-text available via subscription   (Followers: 13, SJR: 0.154, h-index: 1)
Intl. J. of Disability Management Research     Full-text available via subscription   (Followers: 8, SJR: 0.179, h-index: 2)
Intl. J. of Law in Context     Hybrid Journal   (Followers: 16, SJR: 0.236, h-index: 5)
Intl. J. of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 7, SJR: 0.232, h-index: 11)
Intl. J. of Middle East Studies     Hybrid Journal   (Followers: 64, SJR: 0.501, h-index: 28)
Intl. J. of Technology Assessment in Health Care     Hybrid Journal   (Followers: 12, SJR: 0.854, h-index: 54)
Intl. J. of Tropical Insect Science     Hybrid Journal   (Followers: 1, SJR: 0.299, h-index: 20)
Intl. Labor and Working-Class History     Full-text available via subscription   (Followers: 11, SJR: 0.262, h-index: 14)
Intl. Organization     Full-text available via subscription   (Followers: 86, SJR: 3.67, h-index: 106)
Intl. Psychogeriatrics     Hybrid Journal   (Followers: 13, SJR: 1.068, h-index: 68)
Intl. Review of Social History     Full-text available via subscription   (Followers: 23, SJR: 0.185, h-index: 16)
Intl. Review of the Red Cross     Full-text available via subscription   (Followers: 10, SJR: 0.275, h-index: 10)
Intl. Theory: A J. of Intl. Politics, Law and Philosophy     Hybrid Journal   (Followers: 19, SJR: 0.774, h-index: 4)
Iraq     Full-text available via subscription   (Followers: 2)
Irish Historical Studies     Hybrid Journal   (Followers: 5, SJR: 0.101, h-index: 8)
Irish J. of Psychological Medicine     Hybrid Journal   (Followers: 1, SJR: 0.107, h-index: 14)
Israel Law Review     Hybrid Journal   (Followers: 3, SJR: 0.12, h-index: 2)
Itinerario     Full-text available via subscription   (Followers: 8, SJR: 0.195, h-index: 4)
J. of African History     Hybrid Journal   (Followers: 21, SJR: 0.381, h-index: 25)
J. of African Law     Full-text available via subscription   (Followers: 3, SJR: 0.125, h-index: 6)
J. of Agricultural and Applied Economics     Open Access   (Followers: 1)
J. of Agricultural Science     Full-text available via subscription   (Followers: 6, SJR: 0.56, h-index: 51)
J. of American Studies     Hybrid Journal   (Followers: 20, SJR: 0.133, h-index: 9)
J. of Anglican Studies     Hybrid Journal   (Followers: 6, SJR: 0.101, h-index: 1)
J. of Applied Animal Nutrition     Hybrid Journal   (Followers: 3)
J. of Asian Studies     Full-text available via subscription   (Followers: 36, SJR: 0.331, h-index: 31)
J. of Benefit-Cost Analysis     Hybrid Journal   (Followers: 2)
J. of Biosocial Science     Hybrid Journal   (Followers: 3, SJR: 0.561, h-index: 41)
J. of British Studies     Full-text available via subscription   (Followers: 30, SJR: 0.306, h-index: 23)
J. of Child Language     Hybrid Journal   (Followers: 20, SJR: 0.787, h-index: 55)
J. of Dairy Research     Full-text available via subscription   (Followers: 7, SJR: 0.682, h-index: 60)
J. of Demographic Economics     Hybrid Journal   (Followers: 3)
J. of Developmental Origins of Health and Disease     Hybrid Journal   (Followers: 2, SJR: 0.74, h-index: 11)
J. of Diagnostic Radiography and Imaging     Hybrid Journal   (Followers: 4)
J. of Ecclesiastical History     Hybrid Journal   (Followers: 19, SJR: 0.123, h-index: 14)
J. of Economic History     Full-text available via subscription   (Followers: 45, SJR: 1.224, h-index: 44)
J. of Experimental Political Science     Full-text available via subscription   (Followers: 5)
J. of Financial and Quantitative Analysis     Full-text available via subscription   (Followers: 33, SJR: 2.998, h-index: 80)
J. of Fluid Mechanics     Hybrid Journal   (Followers: 135, SJR: 1.45, h-index: 155)
J. of French Language Studies     Hybrid Journal   (Followers: 5, SJR: 0.158, h-index: 8)
J. of Functional Programming     Hybrid Journal   (Followers: 1, SJR: 0.917, h-index: 39)
J. of Germanic Linguistics     Full-text available via subscription   (Followers: 7, SJR: 0.219, h-index: 4)

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Journal Cover animal
  [SJR: 1.098]   [H-I: 43]   [3 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1751-7311 - ISSN (Online) 1751-732X
   Published by Cambridge University Press Homepage  [365 journals]
  • ANM volume 12 issue 5 Cover and Front matter
    • PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731118000447
      Issue No: Vol. 12, No. 5 (2018)
       
  • ANM volume 12 issue 5 Cover and Back matter
    • PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731118000459
      Issue No: Vol. 12, No. 5 (2018)
       
  • Prediction of effects of beef selection indexes on greenhouse gas
           emissions
    • Authors: C. D. Quinton; F. S. Hely, P. R. Amer, T. J. Byrne, A. R. Cromie
      Pages: 889 - 897
      Abstract: Genetic improvement in production efficiency traits can also drive reduction in greenhouse gas emissions. This study used international ‘best-practice’ methodology to quantify the improvements in system-wide CO2 equivalent emissions per unit of genetic progress in the Irish Maternal Replacement (MR) and Terminal (T) beef cattle indexes. Effects of each index trait on system gross emissions (GE) and system emissions intensity (EI) were modelled by estimating effects of trait changes on per-animal feed consumption and associated methane production, per-animal meat production and numbers of animals in the system. Trait responses to index selection were predicted from linear regression of individual bull estimated breeding values for each index trait on their MR or T index value, and the resulting regression coefficients were used to calculate trait-wise responses in GE and EI from index selection. Summed over all trait responses, the MR index was predicted to reduce system GE by 0.810 kg CO2e/breeding cow per year per € index and system EI by 0.009 kg CO2e/kg meat per breeding cow per year per € index. These reductions were mainly driven by improvements in cow survival, reduced mature cow maintenance feed requirements, shorter calving interval and reduced offspring mortality. The T index was predicted to reduce system EI by 0.021 kg CO2e/kg meat per breeding cow per year per € index, driven by increased meat production from improvements in carcass weight, conformation and fat. Implications for incorporating an EI reduction index to the current production indexes and long-term projections for national breeding programs are discussed.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002373
      Issue No: Vol. 12, No. 5 (2018)
       
  • Bayesian single-step genomic evaluations combining local and foreign
           information in Walloon Holsteins
    • Authors: F. G. Colinet; J. Vandenplas, S. Vanderick, H. Hammami, R. R. Mota, A. Gillon, X. Hubin, C. Bertozzi, N. Gengler
      Pages: 898 - 905
      Abstract: Most dairy cattle populations found in different countries around the world are small to medium sized and use many artificial insemination bulls imported from different foreign countries. The Walloon population in the southern part of Belgium is a good example for such a small-scale population. Wallonia has also a very active community of Holstein breeders requesting high level genetic evaluation services. Single-step Genomic BLUP (ssGBLUP) methods allow the simultaneous use of genomic, pedigree and phenotypic information and could reduce potential biases in the estimation of genomically enhanced breeding values (GEBV). Therefore, in the context of implementing a Walloon genomic evaluation system for Holsteins, it was considered as the best option. However, in contrast to multi-step genomic predictions, natively ssGBLUP will only use local phenotypic information and is unable to use directly important other sources of information coming from abroad, for example Multiple Across Country Evaluation (MACE) results as provided by the Interbull Center (Uppsala, Sweden). Therefore, we developed and implemented single-step Genomic Bayesian Prediction (ssGBayes), as an alternative method for the Walloon genomic evaluations. The ssGBayes method approximated the correct system of equations directly using estimated breeding values (EBV) and associated reliabilities (REL) without any explicit deregression step. In the Walloon genomic evaluation, local information refers to Walloon EBV and REL and foreign information refers to MACE EBV and associated REL. Combining simultaneously all available genotypes, pedigree, local and foreign information in an evaluation can be achieved but adding contributions to left-hand and right-hand sides subtracting double-counted contributions. Correct propagation of external information avoiding double counting of contributions due to relationships and due to records can be achieved. This ssGBayes method computed more accurate predictions for all types of animals. For example, for genotyped animals with low Walloon REL (
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002324
      Issue No: Vol. 12, No. 5 (2018)
       
  • Genetic correlations among milk yield, morphology, performance test traits
           and somatic cells in dual-purpose Rendena breed
    • Authors: C. Sartori; N. Guzzo, S. Mazza, R. Mantovani
      Pages: 906 - 914
      Abstract: Selection in native local breeds needs great carefulness due to the small population size and the risk of inbreeding. Furthermore, most breeds are dual-purpose, and milk and beef attitudes are antagonistic. For preservation purposes functional traits need to be considered. Focusing on the small local Rendena cattle, this study aimed to analyse the genetic correlations among milk, beef and udder health traits and the response to selection predicted under different scenarios. The study considered milk, fat and protein yields (MY), factor scores for udder volume (UV), conformation (UC) and muscularity obtained from type traits scored on primiparous cows, and performance test traits (PT) measured on young bulls at test station: average daily gain, in vivo SEUROP fleshiness, in vivo dressing percentage. Somatic cell score (SCS) was considered as a functional trait, with a possibility of restricting its genetic gain to zero. The study considered 281 497 MY test-day data collected on 16 974 cows, and data from linear type evaluation on 11 992 primiparous cows for factor scores. The PT data were recorded on 1428 young bulls, and SCS obtained from cell counts at milk recording. Bi-trait restricted maximum likelihood animal model analyses were performed to assess genetic parameters. Heritability varied from 0.157 (fat) to 0.442 (dressing percentage). Udder volume and MY resulted positively genetically correlated (average correlation 0.427), whereas the low-negative genetic correlation between MY and UC (−0.141) suggested a negative impact of milk gain on udder form. Beef traits of factor muscularity and PT showed medium-high favourable genetic correlations (from 0.357 to 0.984), excluding a null correlation between daily gain and muscularity. The genetic correlation MY v. muscularity was unfavourable (−0.328 on average), whereas null correlations were found in MY v. PT, apart from fat v. dressing percentage (−0.151). Somatic cell score showed low unfavourable correlations with protein (0.111) and UV (0.092), and favourable correlations with UC (−0.193). Response to selection in different scenarios indicated a good balanced gain for milk and beef when standardized economic weights of 0.66 and 0.34 are given to the two attitudes, and SCS genetic gain is restricted. Current genetic trends (MY and PT increasing, but muscularity lessening) reflect a stronger selection for milk, suggesting a slight progressive change towards a milk conformation. Aiming to preserve the dual-purpose characteristics of a breed, proper breeding policies taking into account the genetic relationships among traits and including functional traits should be applied in local dual-purpose populations.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002543
      Issue No: Vol. 12, No. 5 (2018)
       
  • Analysis of single nucleotide polymorphisms variation associated with
           
    • Authors: D. Garza Hernandez; S. Mucha, G. Banos, K. Kaseja, K. Moore, N. Lambe, J. Yates, L. Bunger
      Pages: 915 - 922
      Abstract: Sheep are an important part of the global agricultural economy. Growth and meat production traits are significant economic traits in sheep. The Texel breed is the most popular terminal sire breed in the UK, mainly selected for muscle growth and lean carcasses. This is a study based on a genome-wide association approach that investigates the links between some economically important traits, including computed tomography (CT) measurements, and molecular polymorphisms in UK Texel sheep. Our main aim was to identify single nucleotide polymorphisms (SNP) associated with growth, carcass, health and welfare traits of the Texel sheep breed. This study used data from 384 Texel rams. Data comprised ten traits, including two CT measured traits. The phenotypic data were placed in four categories: growth traits, carcass traits, health traits and welfare traits. De-regressed estimated breeding values (EBV) for these traits together with sire genotypes derived with the Ovine 50 K SNP array of Illumina were jointly analysed in a genome wide association analysis. Eight novel chromosome-wise significant associations were found for carcass, growth, health and welfare traits. Three significant markers were intronic variants and the remainder intergenic variants. This study is a first step to search for genomic regions controlling CT-based productivity traits related to body and carcass composition in a terminal sire sheep breed using a 50 K SNP genome-wide array. Results are important for the further development of strategies to identify causal variants associated with CT measures and other commercial traits in sheep. Independent studies are needed to confirm these results and identify candidate genes for the studied traits.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002488
      Issue No: Vol. 12, No. 5 (2018)
       
  • Effects of feeding low fishmeal diets with increasing soybean meal levels
           on growth, gut histology and plasma biochemistry of sea bass
    • Authors: E. Bonvini; A. Bonaldo, L. Mandrioli, R. Sirri, F. Dondi, C. Bianco, R. Fontanillas, F. Mongile, P. P. Gatta, L. Parma
      Pages: 923 - 930
      Abstract: The aquaculture industry depends upon the development of sustainable protein sources to replace fishmeal (FM) in aquafeeds and the products derived from soybeans are some of the most studied plant feedstuffs. A key area of investigation for continuing to improve modern aquafeeds includes the evaluation of varying proportions and combinations of plant ingredients to identify mixtures that are more efficiently utilized by the fish. This study investigated the effects of increasing soybean meal (SBM) by replacing a mix of plant ingredients in low FM (20%) diets on growth, blood biochemistry profile and gut histology on European sea bass. Five isonitrogenous and isolipidic experimental diets were formulated: four diets containing increasing SBM levels (0, 10, 20 and 30%; 0SBM, 10SBM, 20SBM and 30SBM, respectively) with a low content of FM (20%) and one control diet (0% SBM; 35% FM). Diets containing SBM brought to comparable performance and protein utilization, while 0SBM had negative impact on feed conversion rate and protein utilization. Blood parameters suggested an optimal nutritional status under all feeding treatments, even though slightly decreased values were reported at increasing dietary SBM. Histology examination did not show any changes indicative of soy-induced enteritis. We can conclude that for European sea bass: (i) different blends of plant protein did not affect feed intake despite the 20% FM dietary level; (ii) the inclusion of SBM maintains optimal growth and feed utilization in low FM diets; (iii) blood biochemistry profile showed a good nutritional status under all feeding regimes; (iv) no evidence of soy-induced enteritis was reported in any group fed low FM diets. For formulation of practical diets in on-growing of European sea bass, SBM up to 30% can be successfully incorporated into feeds containing low FM inclusion.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002683
      Issue No: Vol. 12, No. 5 (2018)
       
  • Effects of methionine hydroxy analogue supplementation on the expression
           of antioxidant-related genes of acute heat stress-exposed broilers
    • Authors: E. Gasparino; A. P. Del Vesco, A. S. Khatlab, V. Zancanela, D. O. Grieser, S. C. C. Silva
      Pages: 931 - 939
      Abstract: We evaluated the effects of heat stress (HS) and methionine supplementation on biological markers of stress and expression of the genes for superoxide dismutase (SOD), thioredoxin (TRx), thioredoxin reductase 1 (TRxR1) and methionine sulfoxide reductase A (MsrA) in broilers aged 1 to 21 or 22 to 42 days. The broilers were divided into two treatments, one with the recommended level of methionine supplementation (MS, supplementation of dl-2-hydroxy-4-methylthiobutanoic acid (dl-HMTBA)) and one without methionine supplementation (MD). The animals were maintained at a temperature of thermal comfort or one of HS (38°C for 24 h). Mortality was only observed in 42-day-old broilers exposed to HS and fed the MD diet, and the rate was 5%. Starter period: we observed an interaction effect between diet and temperature on the gene expression of TRxR1 and MsrA, and expression of these genes was higher in the HS animals that received the MS diet than that in birds with the MD diet. Grower period: the expression of SOD, TRxR1 and MsrA genes, activities of aspartate aminotransferase (AST) and creatine kinase (CK) and content of creatinine were influenced by both study variables. In the HS animals, the expression of these genes, AST activity and creatinine content increased and CK activity decreased. In the animals on the MD diet, the expression of these genes and AST and creatinine values were higher and the CK activity was lower than those for the birds on the MS diet. Our results indicated that under HS conditions, the supplementation with dl-HMTBA could mitigate major damage caused by stress through the action on some genes related to TRx complex activity.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002439
      Issue No: Vol. 12, No. 5 (2018)
       
  • Prediction of the amino acid digestibility of legume seeds in growing
           pigs: a meta-analysis approach
    • Authors: F. Messad; M. P. Létourneau-Montminy, E. Charbonneau, D. Sauvant, F. Guay
      Pages: 940 - 949
      Abstract: On pig farms, a high proportion of the cost of production comes from feed costs. However, the use of alternative ingredients such as legume seeds may help to reduce this cost. In fact, legume seeds are an important source of essential amino acids (EAA) and can therefore be an alternative to oilseed meals. However, the accurate use of these legume seeds requires a precise knowledge of the standardized ileal digestibility (SID) of EAA, which may vary depending on its botanical variety. A meta-analysis was performed on a database compiling data from 41 studies published between 1981 and 2013 and 178 dietary treatments. Models of prediction of the SID of EAA as well as the dietary concentration of digestible standardized EAA (dEAA) were obtained, based on the chemical composition of ingredients reported in the publications. The effect of the type of legume seeds (faba bean, lupin, pea and soya bean), surgical procedures (T-cannula, re-entrant cannulas, post valve T-cannulas and ileo-rectal anastomosis), and BW of pigs (BW⩽25 kg BW>25 kg) were also tested in each model. Results showed that dietary CP and crude fibre (CF) were, respectively, the best predictors of each EAA SID for faba bean, lupin and pea (R2=0.42 to 0.89) and soya bean (R2=0.32 to 0.77). For the dEAA content, the best prediction models included dietary CP and ADF for faba bean, lupin and pea and soya bean, respectively, with R2 ranging from 0.66 to 0.98. Models developed in this study allow predicting the digestibility of EAA in these alternatives feedstuffs.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002427
      Issue No: Vol. 12, No. 5 (2018)
       
  • Pelleting and extrusion can ameliorate negative effects of toasting of
           rapeseed meal on protein digestibility in growing pigs
    • Authors: S. Salazar-Villanea; E. M. A. M. Bruininx, H. Gruppen, W. H. Hendriks, P. Carré, A. Quinsac, A. F. B. van der Poel
      Pages: 950 - 958
      Abstract: Toasting time (TT) of rapeseed meal (RSM), the diet processing (DP) method and the interaction between both on the apparent CP digestion along the gastrointestinal tract and the apparent ileal digestibility (AID) of amino acids of growing pigs were investigated. The experiment consisted of a 3×3 factorial design of TT of RSM (0, 60 and 120 min) and DP method (mash, pelleting and extrusion). In total, 81 boars with a starting BW of 20 kg were euthanized 4 h after their last feeding. The gastrointestinal tract was dissected and the small intestine divided in three sections of similar length. Samples were collected from the stomach, 1.5 m from the ends of each of the three sections of the small intestine, and the rectum. The apparent digestibility (AD) of CP for each of the small intestine sections was used to calculate the rate of CP digestion. Increasing the TT of RSM resulted in lower protein solubility, lower lysine/reactive lysine contents and higher protein denaturation, indicative of the occurrence of protein aggregation and Maillard reactions. There were significant effects (P⩽0.01) of TT on the AD of CP in the different sections of the gastrointestinal tract. The rate of CP digestion of the 0 min toasted RSM diets was 23% and 35% higher than that of the 60 and 120 min toasted RSM diets, respectively. There was a significant interaction (P=0.04) between TT and DP for the AID of CP. Although pelleting of the 0 and 60 min toasted RSM diets did not change the AID of CP with respect to the mash diets, pelleting of the 120 min toasted RSM diet increased the AID of CP by 9.3% units. Extrusion increased the AID of CP of the 0 and 60 min toasted RSM diets by 3.4% and 4.3% units with respect to the mash diets, whereas extrusion of the 120 min toasted RSM diet increased the AID of CP by 6.9% units. Similar positive effects of pelleting and extrusion were obtained for the AID of lysine and reactive lysine, especially in the diets with higher TT. In conclusion, processing (pelleting and extrusion) of RSM containing diets can ameliorate the negative effects of RSM toasting on protein and amino acid digestibility; these effects were larger for the RSM toasted for longer times.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002476
      Issue No: Vol. 12, No. 5 (2018)
       
  • Growth performance and digestion of growing lambs fed diets supplemented
           with glycerol
    • Authors: A. M. Saleem; A. M. Singer
      Pages: 959 - 963
      Abstract: Two experiments were conducted to evaluate the effects of replacing corn with an increasing concentration of high-purity glycerol (>99%) on growth performance, economical efficiency, blood constituents and nutrient digestibility of growing lambs. In experiment one, 24 male lambs (initial BW=33.6±6.0 kg; age=6.75±0.75 months) were randomly assigned to one of the three experimental treatments containing 0%, 5% or 10% glycerol to replace corn in concentrate. In experiment two, nine lambs (initial BW=44.7±2.2 kg, age=8.84±0.32 months) were used in a digestion trial with three treatments (three lambs per treatment) with glycerol replacing corn at 0%, 5% or 10% in the concentrate. Total dry matter (DM) intake decreased quadratically (P=0.003) with increasing concentration of glycerol in the diet. Lambs fed glycerol diets had greater average daily gain (P=0.005) and better feed efficiency (P=0.002) compared with the control. Feed costs were also reduced with glycerol inclusion. Glycerol supplementation did not affect serum concentrations of total protein, albumin, globulin, total lipid, cholesterol and glucose concentrations. Glycerol supplementation had no effect (P>0.05) on organic matter and CP digestion, but improved DM (P=0.0003), crude fiber (P=0.10), ether extract (P=0.0002) and nitrogen-free extract (P=0.05) digestion. In conclusion, glycerol can replace corn up to 10% of DM in the diets of growing lambs.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117001793
      Issue No: Vol. 12, No. 5 (2018)
       
  • Moringa+oleifera+for+berseem+clover+in+the+diets+of+Nubian+goats+on+feed+utilisation,+and+milk+yield,+composition+and+fatty+acid+profile&rft.title=animal&rft.issn=1751-7311&rft.date=2018&rft.volume=12&rft.spage=964&rft.epage=972&rft.aulast=Kholif&rft.aufirst=A.&rft.au=A.+E.+Kholif&rft.au=G.+A.+Gouda,+O.+A.+Olafadehan,+M.+M.+Abdo&rft_id=info:doi/10.1017/S1751731117002336">Effects of replacement of Moringa oleifera for berseem clover in the diets
           of Nubian goats on feed utilisation, and milk yield, composition and fatty
           acid profile
    • Authors: A. E. Kholif; G. A. Gouda, O. A. Olafadehan, M. M. Abdo
      Pages: 964 - 972
      Abstract: Replacement of conventional feedstuffs with cheap non-conventional ingredients may improve livestock performance and the quality of their products, particularly milk. The study considered the effects of Moringa oleifera (MO) foliage in replacement of berseem clover (BC) on feed utilisation and lactational performance in Nubian goats. A total of 16 lactating Nubian does, weighing 36.2±0.8 kg, were randomly assigned to four experimental treatments containing 0, 125, 250 and 375 g of MO per kg diet to replace 0 (M0), 25 (M25), 50 (M50) and 75% (M75) of BC (on dry matter (DM) basis) in a quadruplicated 4×4 Latin square design. The MO diets increased (P
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002336
      Issue No: Vol. 12, No. 5 (2018)
       
  • Monitoring and assessment of ingestive chewing sounds for prediction of
           herbage intake rate in grazing cattle
    • Authors: J. R. Galli; C. A. Cangiano, M. A. Pece, M. J. Larripa, D. H. Milone, S. A. Utsumi, E. A. Laca
      Pages: 973 - 982
      Abstract: Accurate measurement of herbage intake rate is critical to advance knowledge of the ecology of grazing ruminants. This experiment tested the integration of behavioral and acoustic measurements of chewing and biting to estimate herbage dry matter intake (DMI) in dairy cows offered micro-swards of contrasting plant structure. Micro-swards constructed with plastic pots were offered to three lactating Holstein cows (608±24.9 kg of BW) in individual grazing sessions (n=48). Treatments were a factorial combination of two forage species (alfalfa and fescue) and two plant heights (tall=25±3.8 cm and short=12±1.9 cm) and were offered on a gradient of increasing herbage mass (10 to 30 pots) and number of bites (~10 to 40 bites). During each grazing session, sounds of biting and chewing were recorded with a wireless microphone placed on the cows’ foreheads and a digital video camera to allow synchronized audio and video recordings. Dry matter intake rate was higher in tall alfalfa than in the other three treatments (32±1.6 v. 19±1.2 g/min). A high proportion of jaw movements in every grazing session (23 to 36%) were compound jaw movements (chew-bites) that appeared to be a key component of chewing and biting efficiency and of the ability of cows to regulate intake rate. Dry matter intake was accurately predicted based on easily observable behavioral and acoustic variables. Chewing sound energy measured as energy flux density (EFD) was linearly related to DMI, with 74% of EFD variation explained by DMI. Total chewing EFD, number of chew-bites and plant height (tall v. short) were the most important predictors of DMI. The best model explained 91% of the variation in DMI with a coefficient of variation of 17%. Ingestive sounds integrate valuable information to remotely monitor feeding behavior and predict DMI in grazing cows.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002415
      Issue No: Vol. 12, No. 5 (2018)
       
  • Combined effects of oleic, linoleic and linolenic acids on lactation
           performance and the milk fatty acid profile in lactating dairy cows
    • Authors: C. Bai; Q. N. Cao, Khas-Erdene, C. J. Ao, P. Gao, Y. Zhang, F. Y. Mi, T. L. Zhang
      Pages: 983 - 989
      Abstract: The potential combined effects of oleic, linoleic and linolenic acids supplementation on lactation performance and the milk fatty acid (FA) profile in dairy cows have not been well investigated. Our objective was to examine the effects of supplementation with a combination of these FA as well as the effects of removing each from the combination on lactation performance and the milk FA profile in dairy cows. Eight Holstein cows (101±11 days in milk) received four intravenously infused treatments in a 4×4 Latin square design, and each period lasted for 12 days which consisted of 5 days of infusion and 7 days of recovery. The control treatment (CTL) contained 58.30, 58.17 and 39.96 g/day of C18 : 1 cis-9; C18 : 2 cis-9, cis-12; and C18 : 3 cis-9, cis-12, cis-15, respectively. The other three treatments were designated −−C18 : 1 (20.68, 61.17 and 41.72 g/day of C18 : 1 cis-9; C18 : 2 cis-9, cis-12; and C18 : 3 cis-9, cis-12, cis-15, respectively), −C18 : 2 (61.49, 19.55 and 42.13 g/day of C18 : 1 cis-9; C18 : 2 cis-9, cis-12; and C18 : 3 cis-9, cis-12, cis-15, respectively) and −C18 : 3 (60.89, 60.16 and 1.53 g/day of C18 : 1 cis-9; C18 : 2 cis-9, cis-12; and C18 : 3 cis-9, cis-12, cis-15, respectively). Dry matter intake and lactose content were not affected by the treatments, but the milk protein content was lower in cows treated with −C18 : 2 than that in CTL-treated cows. Milk yield as well as milk fat, protein and lactose yields were higher in cows treated with −C18 : 3 than the yields in CTL-treated cows, and these yields increased linearly as the unsaturation degree of the supplemental FA decreased. Compared with the CTL treatment, the −C18 : 2 treatment decreased milk C18 : 2 cis-9 content (by 2.80%) and yield (by 22.12 g/day), and the −C18 : 3 treatment decreased milk C18 : 3 cis-9, cis-12, cis-15 content (by 2.72%) and yield (by 22.33 g/day). In contrast, removing C18 : 1 cis-9 did not affect the milk content or yield of C18 : 1 cis-9. The −C18 : 2-treated cows had a higher C18 : 1 cis-9 content and tended to have a higher C18 : 1 cis-9 yield than CTL-treated cows. The yields of C8 : 0, C14 : 0 and C16 : 0 as well as
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002518
      Issue No: Vol. 12, No. 5 (2018)
       
  • Reduced satellite cell density and myogenesis in Wagyu compared with Angus
           cattle as a possible explanation of its high marbling
    • Authors: X. Fu; Q. Yang, B. Wang, J. Zhao, M. Zhu, S. M. Parish, M. Du
      Pages: 990 - 997
      Abstract: Mechanisms responsible for excellent marbling in Japanese black cattle, Wagyu, remain to be established. Because both muscle cells and intramuscular adipocytes are developed from mesenchymal progenitor cells during early muscle development, we hypothesized that intramuscular progenitor cells in Wagyu cattle have attenuated myogenic capacity in favor of adipogenesis, leading to high marbling but reduced muscle growth. Biceps femoris muscle biopsy samples were obtained from both Angus (n=3) and Wagyu (n=3) cattle at 12 months of age. Compared with Angus, the density of satellite cells was much lower in Wagyu muscle (by 45.8±10%, P
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002403
      Issue No: Vol. 12, No. 5 (2018)
       
  • α-tocopherol+and+selenium+concentrations+in+plasma+of+the+lamb+but+does+not+improve+their+immune+function&rft.title=animal&rft.issn=1751-7311&rft.date=2018&rft.volume=12&rft.spage=998&rft.epage=1006&rft.aulast=Sterndale&rft.aufirst=S.&rft.au=S.+Sterndale&rft.au=S.+Broomfield,+A.+Currie,+S.+Hancock,+G.+A.+Kearney,+J.+Lei,+S.+Liu,+A.+Lockwood,+V.+Scanlan,+G.+Smith,+A.+N.+Thompson&rft_id=info:doi/10.1017/S1751731117002300">Supplementation of Merino ewes with vitamin E plus selenium increases
           α-tocopherol and selenium concentrations in plasma of the lamb but does
           not improve their immune function
    • Authors: S. Sterndale; S. Broomfield, A. Currie, S. Hancock, G. A. Kearney, J. Lei, S. Liu, A. Lockwood, V. Scanlan, G. Smith, A. N. Thompson
      Pages: 998 - 1006
      Abstract: Vitamin E and selenium have been reported to improve immune function across a range of species. Ewes lambing on poor-quality dry pasture in autumn in Western Australia are at risk of being deficient in vitamin E and selenium at lambing thus predisposing their lambs to deficiencies and increasing the risk of infection and disease. This study tested the hypotheses that (i) supplementation of autumn-lambing ewes with vitamin E plus selenium in late gestation will increase the concentrations of vitamin E and selenium in plasma in the ewe and lamb and (ii) that the increased concentrations of vitamin E and selenium in plasma in the lambs will improve their innate and adaptive immune responses and thus survival. Pregnant Merino ewes were divided into a control group (n=58) which received no supplementation or a group supplemented with vitamin E plus selenium (n=55). On days 111, 125 and 140 of pregnancy ewes in the vitamin E plus selenium group were given 4 g all-rac-α-tocopherol acetate orally. On day 111 the ewes were also given 60 mg of selenium as barium selenate by subcutaneous injection. The concentrations of α-tocopherol and selenium were measured in ewes and/or lambs from day 111 of pregnancy to 14 weeks of age±10 days (weaning). Immune function of the lamb was assessed by analysing the numbers and phagocytic capacities of monocytes and polymorphonuclear leucocytes and plasma IgG and anti-tetanus toxoid antibody concentrations between birth and 14 weeks of age±10 days. Maternal supplementation with vitamin E plus selenium increased the concentration of α-tocopherol in plasma (1.13 v. 0.67 mg/l; P
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002300
      Issue No: Vol. 12, No. 5 (2018)
       
  • Ram semen deterioration by short-term exposure to high altitude is
           prevented by improvement of antioxidant status
    • Authors: E. Cofré; O. A. Peralta, A. Raggi, M. De los Reyes, F. Sales, A. González-Bulnes, V. H. Parraguez
      Pages: 1007 - 1014
      Abstract: Ovine reproduction efficiency in herds at high altitude (ha) is lower than that at low altitude (la). In ewes, ha effects are due to hypoxia and oxidative stress. Our aim was to establish the effect of antioxidant vitamin supplementation on semen traits and antioxidant status of rams exposed to short or long time ha. A total of 32 rams native to la (~500 m) were used, 16 were kept at la and the other 16 were brought to ha (~3600 m), where they were placed in the same flock as the ha native rams (n=16). Half of the animals in each group were supplemented daily with vitamins C 600 mg and E 450 IU per os, during the entire experimental period, starting the 4th day after animal’s arrival at ha (day 0). At days 0, 30 and 60 of treatment, blood and semen samples were collected for evaluation of antioxidant status and semen standard characteristics. Data were compared within each experimental time by analysis of variance using a general linear model. Elevated concentrations of oxidative stress biomarkers were present in blood from animals maintained at ha. Ejaculates from ha exposed rams showed decreased sperm concentration, progressive motility and viability, in addition to decreased antioxidant status in seminal fluid. A total of 30 days of oral supplementation with vitamins C and E prevented some ha negative effects on semen characteristics, mainly in recently ha exposed rams. It is concluded that exposure of rams to ha negatively affects semen quality, where oxidative stress plays a predominant role. These effects are mainly prevented by oral supplementation of vitamins C and E, which constitutes a simple and cheap alternative to improve semen quality of rams when they are moved to ha.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002452
      Issue No: Vol. 12, No. 5 (2018)
       
  • Color temperature of light-emitting diode lighting matters for optimum
           growth and welfare of broiler chickens
    • Authors: G. S. Archer
      Pages: 1015 - 1021
      Abstract: Light-emitting diode (LED) light bulbs are becoming more prevalent in broiler production as they are dimmable and more energy efficient than compact fluorescent lamps. Although there is some research on how spectrum of light can affect production, little has been conducted on how it may affect stress, and behavior. To determine how different spectrum of light produced by LED lights could affect production, stress and behavior we raised broilers under either 2700 K (WARM) or 5000 K (COOL) color temperature LED bulbs. To determine stress susceptibility bilateral asymmetry (ASYM, n=128), plasma corticosterone concentrations (CORT, n=40) and heterophil/lymphocyte ratios (HL, n=80) were measured. Fear was measured using tonic immobility (TI, n=128), inversion (INV, n=128) and isolation (ISO, n=128). Weight gain and feed conversion ratio (FCR) were also determined. The COOL birds had lower ASYM (1.65±0.08 mm, P=0.001), CORT (5.8±1.2 ng/dl, P=0.01) and HL (0.16±0.01, P=0.03) than the WARM birds (2.38±0.14 mm, 13.4±2.7 ng/dl and 0.21±0.02, respectively). The COOL birds righted faster during TI (136.2±11.1 s, P=0.001), flapped less intensely during INV (4.1±0.1 flaps/s, P
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002361
      Issue No: Vol. 12, No. 5 (2018)
       
  • Development of equations to predict the influence of floor space on
           average daily gain, average daily feed intake and gain : feed ratio of
           finishing pigs
    • Authors: J. R. Flohr; S. S. Dritz, M. D. Tokach, J. C. Woodworth, J. M. DeRouchey, R. D. Goodband
      Pages: 1022 - 1029
      Abstract: Floor space allowance for pigs has substantial effects on pig growth and welfare. Data from 30 papers examining the influence of floor space allowance on the growth of finishing pigs was used in a meta-analysis to develop alternative prediction equations for average daily gain (ADG), average daily feed intake (ADFI) and gain : feed ratio (G : F). Treatment means were compiled in a database that contained 30 papers for ADG and 28 papers for ADFI and G : F. The predictor variables evaluated were floor space (m2/pig), k (floor space/final BW0.67), Initial BW, Final BW, feed space (pigs per feeder hole), water space (pigs per waterer), group size (pigs per pen), gender, floor type and study length (d). Multivariable general linear mixed model regression equations were used. Floor space treatments within each experiment were the observational and experimental unit. The optimum equations to predict ADG, ADFI and G : F were: ADG, g=337.57+(16 468×k)−(237 350×k2)−(3.1209×initial BW (kg))+(2.569×final BW (kg))+(71.6918×k×initial BW (kg)); ADFI, g=833.41+(24 785×k)−(388 998×k2)−(3.0027×initial BW (kg))+(11.246×final BW (kg))+(187.61×k×initial BW (kg)); G : F=predicted ADG/predicted ADFI. Overall, the meta-analysis indicates that BW is an important predictor of ADG and ADFI even after computing the constant coefficient k, which utilizes final BW in its calculation. This suggests including initial and final BW improves the prediction over using k as a predictor alone. In addition, the analysis also indicated that G : F of finishing pigs is influenced by floor space allowance, whereas individual studies have concluded variable results.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002440
      Issue No: Vol. 12, No. 5 (2018)
       
  • Mid-season targeted selective anthelmintic treatment based on flexible
           weight gain threshold for nematode infection control in dairy calves
    • Authors: A. Merlin; N. Ravinet, A. Madouasse, N. Bareille, A. Chauvin, C. Chartier
      Pages: 1030 - 1040
      Abstract: The suitability of a single mid-season targeted selective treatment (TST) for gastrointestinal nematodes control, based on flexible average daily weight gain (ADWG) thresholds, was investigated in 23 groups of first grazing season calves. In each group, animals were weighed three times: before turnout, at mid-season and at housing. Just after the first weighing, each group was divided in two homogenous sub-groups in terms of age, breed and weight, and randomly allocated to one of two sub-groups intented for two different mid-season anthelmintic treatment strategies: (1) a treatment of all calves composing the sub-group (whole-group treatment (WT)) or (2) a targeted selective weight gain-based treatment (TST) of the animals showing an individual pre-treatment ADWG inferior to the mean pre-treatment ADWG of the corresponding WT sub-group. Anthelmintic treatment (levamisole 7.5 mg/kg BW) was performed 3 to 4 months after turnout. At housing, two parasitological parameters (the anti-Ostertagia ostertagi antibody level-Ostertagia optical density ratio (ODR) and the pepsinogen level) and a clinical parameter (the breech soiling score) were assessed at individual level in each group. Then, the high exposed groups to gastrointestinal nematode (GIN) were defined as groups for which untreated animals exhibited a mean Ostertagia ODR ⩾0.7 and among these groups, the ones characterized by high abomasal damage due to Ostertagia for which untreated animals exhibited a mean pepsinogen level ⩾2.5 U Tyr were also identified. Among TST sub-groups, the treatment ADWG thresholds varied from 338 to 941 g/day and the percentage of treated animals from 28% to 75%. Pre- and post-treatment ADWG as well as parasitological and clinical parameters measured at housing were similar between TST and WT sub-groups including the 17 high exposed groups to GIN. Within these 17 groups, the treatment allowed to significantly improve post-treatment ADWG compared with untreated animals. In the six high exposed groups showing mean pepsinogen level ⩾2.5 U Tyr, the average effect of treatment on post-treatment ADWG was the highest and estimated up to 14 kg after a grazing duration of 4 months. In contrast, in six other groups showing mean Ostertagia ODR
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002312
      Issue No: Vol. 12, No. 5 (2018)
       
  • Factors associated with passive immunity transfer in dairy calves:
           combined effect of delivery time, amount and quality of the first
           colostrum meal
    • Authors: I. Lora; A. Barberio, B. Contiero, P. Paparella, L. Bonfanti, M. Brscic, A. L. Stefani, F. Gottardo
      Pages: 1041 - 1049
      Abstract: Despite the well-known importance of an adequate colostral immunoglobulin (Ig) transfer to calf health and survival, failed transfer of passive immunity (FTPI) remains a widespread problem in dairy farming. The aim of this study was to investigate the management factors associated with FTPI in newborn calves, evaluating particularly the combined effect of delivery time, amount and quality of the first colostrum meal. The study was conducted from March to August 2014 on 21 Italian dairy farms. Farmers were asked as first to answer a farm-level questionnaire on calf management. Blood sampling was then performed on overall 244 calves (1 to 5 days of age) born from Holstein cows, and a sample of the first colostrum meal of each calf was collected. Individual information on calves and the respective colostrum management were recorded. Serum and colostrum Ig concentrations were assessed by electrophoresis. A mixed effects multivariable logistic regression model was used to investigate the association of the variables obtained from both the management questionnaire and the individual calf data with FTPI (calf serum Ig concentration 87.6 g/l) within 1.0 h from birth. Considerable improvements are still needed about colostrum management for newborn calves in dairy farms. The results of this study will help in developing farm-specific programs for reducing the occurrence of FTPI.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002579
      Issue No: Vol. 12, No. 5 (2018)
       
  • Targeted metabolomics: new insights into pathobiology of retained placenta
           in dairy cows and potential risk biomarkers
    • Authors: E. Dervishi; G. Zhang, R. Mandal, D. S. Wishart, B. N. Ametaj
      Pages: 1050 - 1059
      Abstract: A targeted quantitative metabolomics approach was used to study temporal changes of serum metabolites in cows that normally released their fetal membranes and those that retained the placenta. We identified and measured serum concentrations of 128 metabolites including amino acids, acylcarnitines, biogenic amines, glycerophospholipids, sphingolipids and hexose at −8 and −4 weeks before parturition, during the week of retained placenta (RP) diagnosis, and at +4 and +8 weeks after parturition. In addition, we aimed at identifying metabolite signatures of pre-RP in the serum that might be used as predictive biomarkers for risk of developing RP in dairy cows. Results revealed major alterations in the metabolite fingerprints of pre-RP cows starting as early as −8 weeks before parturition and continuing as far as +8 weeks after calving. Biomarker candidates found in this study are mainly biomarkers of inflammation which might not be specific to RP. Therefore, the relevance of serum Lys, Orn, acetylornithine, lysophophatidylcholine LysoPC a C28:0, Asp, Leu and Ile as potential serum biomarkers for prediction of risk of RP in dairy cows will have to be tested in the future. In addition, lower concentrations of LysoPCs, Trp, and higher kynurenine in the serum during prepartum and the week of occurrence of RP suggest involvement of inflammation in the pathobiology of RP.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002506
      Issue No: Vol. 12, No. 5 (2018)
       
  • Review: Pork production with maximal nitrogen efficiency
    • Authors: S. Millet; M. Aluwé, A. Van den Broeke, F. Leen, J. De Boever, S. De Campeneere
      Pages: 1060 - 1067
      Abstract: During growth, pigs convert plant protein into animal protein. The major part of the ingested protein is excreted via manure, with potential nitrogen (N) losses to the environment. To limit N losses and increase sustainability of pork production, the efficiency of protein conversion should be maximized. The aim of this paper is to critically evaluate diet and management strategies linked with N efficiency. Besides nutrition, we discuss three management strategies observed in science and in practice to be linked with improved N efficiency: genetic selection, castration and slaughter weight. Because diet has a marked effect on eventual N losses, it must also be taken into account when evaluating management strategies. A reductionist approach, such as feeding the same diet across all management treatments, may overestimate the effect of a management strategy and eventually lead to incorrect conclusions. The amount of excreted N depends on the amount of ingested N, the amount of absorbed N, the amino acid (AA) balance in the diet and the animal’s N and AA requirements. Daily multiphase feeding adapted to the individual animal’s AA needs is likely to be the most N efficient. For animals housed in groups, phase feeding is necessary. When combined with periods of temporary AA restriction, N efficiency can be further improved. Specific AA consumption must be balanced by applying the ideal protein concept. With better knowledge of the requirements of individual animals and the commercial availability of certain AAs, the total dietary CP level can be lowered within limits. Further research is needed on the minimal CP level that allows maximal performance. For this end a useful parameter may be the ratio of standardized ileal digestible (SID) lysine : apparent total tract digestible CP level. By combining optimal nutrition and management, a whole body N efficiency approaching 60% may be achievable in the near future.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002610
      Issue No: Vol. 12, No. 5 (2018)
       
  • Water footprinting of pasture-based farms; beef and sheep
    • Authors: E. Murphy; T. P. Curran, N. M. Holden, D. O’Brien, J. Upton
      Pages: 1068 - 1076
      Abstract: In the context of water use for agricultural production, water footprints (WFs) have become an important sustainability indicator. To understand better the water demand for beef and sheep meat produced on pasture-based systems, a WF of individual farms is required. The main objective of this study was to determine the primary contributors to freshwater consumption up to the farm gate expressed as a volumetric WF and associated impacts for the production of 1 kg of beef and 1 kg of sheep meat from a selection of pasture-based farms for 2 consecutive years, 2014 and 2015. The WF included green water, from the consumption of soil moisture due to evapotranspiration, and blue water, from the consumption of ground and surface waters. The impact of freshwater consumption on global water stress from the production of beef and sheep meat in Ireland was also computed. The average WF of the beef farms was 8391 l/kg carcass weight (CW) of which 8222 l/kg CW was green water and 169 l/kg CW was blue water; water for the production of pasture (including silage and grass) contributed 88% to the WF, concentrate production – 10% and on-farm water use – 1%. The average stress-weighted WF of beef was 91 l H2O eq/kg CW, implying that each kg of beef produced in Ireland contributed to freshwater scarcity equivalent to the consumption of 91 l of freshwater by an average world citizen. The average WF of the sheep farms was 7672 l/kg CW of which 7635 l/kg CW was green water and 37 l/kg CW was blue water; water for the production of pasture contributed 87% to the WF, concentrate production – 12% and on-farm water use – 1%. The average stress-weighted WF was 2 l H2O eq/kg CW for sheep. This study also evaluated the sustainability of recent intensification initiatives in Ireland and found that increases in productivity were supported through an increase in green water use and higher grass yields per hectare on both beef and sheep farms.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002865
      Issue No: Vol. 12, No. 5 (2018)
       
  • Productive, economic and risk assessment of grazing dairy systems with
           supplemented cows milked once a day
    • Authors: B. Lazzarini; N. Lopez-Villalobos, N. Lyons, L. Hendrikse, J. Baudracco
      Pages: 1077 - 1083
      Abstract: Milking cows once a day (OAD) is a herd management practice that may help to reduce working effort and labour demand in dairy farms. However, a decrease in milk yield per cow occurs in OAD systems compared with twice a day (TAD) systems and this may affect profitability of dairy systems. The objective of this study was to assess productive and economic impact and risk of reducing milking frequency from TAD to OAD for grazing dairy systems, using a whole-farm model. Five scenarios were evaluated by deterministic and stochastic simulations: one scenario under TAD milking (TADAR) and four scenarios under OAD milking. The OAD scenarios assumed that milk yield per cow decreased by 30% (OAD30), 24% (OAD24), 19% (OAD19) and 10% (OAD10), compared with TADAR scenario, based on experimental and commercial farms data. Stocking rate (SR) was increased in all OAD scenarios compared to TADAR and two levels of reduction in labour cost were tested, namely 15% and 30%. Milk and concentrate feeds prices, and pasture and crop yields, were allowed to behave stochastically to account for market and climate variations, respectively, to perform risk analyses. Scenario OAD10 showed similar milk yield per ha compared with TADAR, as the increased SR compensated for the reduction in milk yield per cow. For scenarios OAD30, OAD24 and OAD19 the greater number of cows per ha partially compensated for the reduction of milk yield per cow and milk yield per ha decreased 21%, 15% and 10%, respectively, compared with TADAR. Farm operating profit per ha per year also decreased in all OAD scenarios compared with TADAR, and were US$684, US$161, US$ 303, US$424 and US$598 for TADAR, OAD30, OAD24, OAD19, OAD10, respectively, when labour cost was reduced 15% in OAD scenarios. When labour cost was reduced 30% in OAD scenarios, only OAD10 showed higher profit (US$706) than TADAR. Stochastic simulations showed that exposure to risk would be higher in OAD scenarios compared with TADAR. Results showed that OAD milking systems might be an attractive alternative for farmers who can either afford a reduction in profit to gain better and more flexible working conditions or can minimise milk yield loss and greatly reduce labour cost.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002853
      Issue No: Vol. 12, No. 5 (2018)
       
  • Relationship between carcass traits, prime cuts and carcass grading from
           foals slaughtered at the age of 13 and 26 months and supplemented with
           standard and linseed-rich feed
    • Authors: M. Ruiz; M. V. Sarriés, M. J. Beriain, S. Crecente, R. Domínguez, J. M. Lorenzo
      Pages: 1084 - 1092
      Abstract: In order to improve foal carcass quality, it is necessary in particular to improve the carcass dressing percentage and tissue composition. Thus, it is important to establish relationships between grading systems and these parameters. This research was conducted to study the effect of slaughter age (13 v. 26 months) and finishing feed (standard v. linseed feed) on carcass characteristics such as subcutaneous fat colour plus classification of foals for the degree of fatness and conformation. For this study, 46 foals of crossbred genotype (Galician Mountain×Burguete) were used. Finishing feed did not affect any parameter, whereas slaughter age influenced all parameters (P
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002555
      Issue No: Vol. 12, No. 5 (2018)
       
  • Carcass and meat quality characteristics of Churra and Assaf suckling
           lambs
    • Authors: J. Mateo; I. Caro, D. E. Carballo, N. Gutiérrez-Méndez, J. J. Arranz, B. Gutiérrez-Gil
      Pages: 1093 - 1101
      Abstract: Suckling lamb meat is traditionally produced in Mediterranean Europe. Breed can affect the quality of the lamb carcass and meat. This study is aimed at comparing the carcass and meat quality between suckling lambs from a local and a non-native dairy breed, Churra and Assaf. Churra is included in the Spanish Protected Geographical Indication (PGI) ‘Lechazo de Castilla y León’, whereas Assaf is not. However, Assaf breeders have requested the inclusion of the breed in the PGI. Carcasses and meat from 16 male lambs (eight Churra and eight Assaf) were used in this study. The lambs were all raised under an intensive rearing system and fed on a milk substitute to minimise maternal influence. The carcasses were evaluated for conformation, fatness, joint and leg tissue proportions and the meat was analysed for composition (i.e. proximate composition, iron, haematin, fatty acids and volatiles) and technological quality traits (i.e. texture, water holding capacity, colour and lipid stability). Churra carcasses were larger than Assaf carcasses. However, the proportions of commercial joints and main tissues did not differ between breeds. Cavity and intermuscular leg fat, but not total leg fat, were higher in Churra carcasses. Churra meat showed a higher proportion of n-6 fatty acids, higher redness and better colour stability during aerobic storage. In contrast, Assaf lamb was more resistant to lipid oxidation after cooking. This is a preliminary study to measure the influence of breed on a wide range of quality characteristics in Churra and Assaf suckling lamb carcass and meat. It may be of relevance for breeders, consumers and food policy makers, setting the basis for future studies that include larger commercial populations.
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002270
      Issue No: Vol. 12, No. 5 (2018)
       
  • The effect of floor type on the performance, cleanliness, carcass
           characteristics and meat quality of dairy origin bulls
    • Authors: V. S. Murphy; D. E. Lowe, F. O. Lively, A. W. Gordon
      Pages: 1102 - 1110
      Abstract: The aim of this study was to evaluate the effect of using different floor types to accommodate growing and finishing beef cattle on their performance, cleanliness, carcass characteristics and meat quality. In total, 80 dairy origin young bulls (mean initial live weight 224 kg (SD=28.4 kg)) were divided into 20 blocks with four animals each according to live weight. The total duration of the experimental period was 204 days. The first 101 days was defined as the growing period, with the remainder of the study defined as the finishing period. Cattle were randomly assigned within blocks to one of four floor type treatments, which included fully slatted flooring throughout the entire experimental period (CS); fully slatted flooring covered with rubber strips throughout the entire experimental period (RS); fully slatted flooring during the growing period and moved to a solid floor covered with straw bedding during the finishing period (CS-S) and fully slatted flooring during the growing period and moved to fully slatted flooring covered with rubber strips during the finishing period (CS-RS). Bulls were offered ad libitum grass silage supplemented with concentrates during the growing period. During the finishing period, bulls were offered concentrates supplemented with chopped barley straw. There was no significant effect of floor type on total dry matter intake (DMI), feed conversion ratio, daily live weight gain or back fat depth during the growing and finishing periods. Compared with bulls accommodated on CS, RS and CS-RS, bulls accommodated on CS-S had a significantly lower straw DMI (P
      PubDate: 2018-05-01T00:00:00.000Z
      DOI: 10.1017/S1751731117002282
      Issue No: Vol. 12, No. 5 (2018)
       
 
 
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