for Journals by Title or ISSN
for Articles by Keywords
help

Publisher: Oxford University Press   (Total: 370 journals)

 A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

        1 2 | Last   [Sort by number of followers]   [Restore default list]

Showing 1 - 200 of 370 Journals sorted alphabetically
Acta Biochimica et Biophysica Sinica     Hybrid Journal   (Followers: 6, SJR: 0.881, h-index: 38)
Adaptation     Hybrid Journal   (Followers: 8, SJR: 0.111, h-index: 4)
Aesthetic Surgery J.     Hybrid Journal   (Followers: 6, SJR: 1.538, h-index: 35)
African Affairs     Hybrid Journal   (Followers: 60, SJR: 1.512, h-index: 46)
Age and Ageing     Hybrid Journal   (Followers: 84, SJR: 1.611, h-index: 107)
Alcohol and Alcoholism     Hybrid Journal   (Followers: 15, SJR: 0.935, h-index: 80)
American Entomologist     Full-text available via subscription   (Followers: 6)
American Historical Review     Hybrid Journal   (Followers: 140, SJR: 0.652, h-index: 43)
American J. of Agricultural Economics     Hybrid Journal   (Followers: 40, SJR: 1.441, h-index: 77)
American J. of Epidemiology     Hybrid Journal   (Followers: 166, SJR: 3.047, h-index: 201)
American J. of Hypertension     Hybrid Journal   (Followers: 23, SJR: 1.397, h-index: 111)
American J. of Jurisprudence     Hybrid Journal   (Followers: 16)
American J. of Legal History     Full-text available via subscription   (Followers: 6, SJR: 0.151, h-index: 7)
American Law and Economics Review     Hybrid Journal   (Followers: 25, SJR: 0.824, h-index: 23)
American Literary History     Hybrid Journal   (Followers: 12, SJR: 0.185, h-index: 22)
Analysis     Hybrid Journal   (Followers: 23)
Annals of Botany     Hybrid Journal   (Followers: 35, SJR: 1.912, h-index: 124)
Annals of Occupational Hygiene     Hybrid Journal   (Followers: 27, SJR: 0.837, h-index: 57)
Annals of Oncology     Hybrid Journal   (Followers: 49, SJR: 4.362, h-index: 173)
Annals of the Entomological Society of America     Full-text available via subscription   (Followers: 8, SJR: 0.642, h-index: 53)
Annals of Work Exposures and Health     Hybrid Journal  
AoB Plants     Open Access   (Followers: 3, SJR: 0.78, h-index: 10)
Applied Economic Perspectives and Policy     Hybrid Journal   (Followers: 19, SJR: 0.884, h-index: 31)
Applied Linguistics     Hybrid Journal   (Followers: 51, SJR: 1.749, h-index: 63)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1, SJR: 0.779, h-index: 11)
Arbitration Intl.     Full-text available via subscription   (Followers: 20)
Arbitration Law Reports and Review     Hybrid Journal   (Followers: 13)
Archives of Clinical Neuropsychology     Hybrid Journal   (Followers: 26, SJR: 0.96, h-index: 71)
Aristotelian Society Supplementary Volume     Hybrid Journal   (Followers: 2, SJR: 0.102, h-index: 20)
Arthropod Management Tests     Hybrid Journal   (Followers: 2)
Astronomy & Geophysics     Hybrid Journal   (Followers: 47, SJR: 0.144, h-index: 15)
Behavioral Ecology     Hybrid Journal   (Followers: 48, SJR: 1.698, h-index: 92)
Bioinformatics     Hybrid Journal   (Followers: 311, SJR: 4.643, h-index: 271)
Biology Methods and Protocols     Hybrid Journal  
Biology of Reproduction     Full-text available via subscription   (Followers: 9, SJR: 1.646, h-index: 149)
Biometrika     Hybrid Journal   (Followers: 19, SJR: 2.801, h-index: 90)
BioScience     Hybrid Journal   (Followers: 29, SJR: 2.374, h-index: 154)
Bioscience Horizons : The National Undergraduate Research J.     Open Access   (Followers: 1, SJR: 0.213, h-index: 9)
Biostatistics     Hybrid Journal   (Followers: 16, SJR: 1.955, h-index: 55)
BJA : British J. of Anaesthesia     Hybrid Journal   (Followers: 144, SJR: 2.314, h-index: 133)
BJA Education     Hybrid Journal   (Followers: 63, SJR: 0.272, h-index: 20)
Brain     Hybrid Journal   (Followers: 60, SJR: 6.097, h-index: 264)
Briefings in Bioinformatics     Hybrid Journal   (Followers: 46, SJR: 4.086, h-index: 73)
Briefings in Functional Genomics     Hybrid Journal   (Followers: 4, SJR: 1.771, h-index: 50)
British J. for the Philosophy of Science     Hybrid Journal   (Followers: 34, SJR: 1.267, h-index: 38)
British J. of Aesthetics     Hybrid Journal   (Followers: 25, SJR: 0.217, h-index: 18)
British J. of Criminology     Hybrid Journal   (Followers: 525, SJR: 1.373, h-index: 62)
British J. of Social Work     Hybrid Journal   (Followers: 82, SJR: 0.771, h-index: 53)
British Medical Bulletin     Hybrid Journal   (Followers: 7, SJR: 1.391, h-index: 84)
British Yearbook of Intl. Law     Hybrid Journal   (Followers: 27)
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3, SJR: 1.474, h-index: 31)
Cambridge J. of Economics     Hybrid Journal   (Followers: 58, SJR: 0.957, h-index: 59)
Cambridge J. of Regions, Economy and Society     Hybrid Journal   (Followers: 11, SJR: 1.067, h-index: 22)
Cambridge Quarterly     Hybrid Journal   (Followers: 11, SJR: 0.1, h-index: 7)
Capital Markets Law J.     Hybrid Journal   (Followers: 1)
Carcinogenesis     Hybrid Journal   (Followers: 2, SJR: 2.439, h-index: 167)
Cardiovascular Research     Hybrid Journal   (Followers: 11, SJR: 2.897, h-index: 175)
Cerebral Cortex     Hybrid Journal   (Followers: 41, SJR: 4.827, h-index: 192)
CESifo Economic Studies     Hybrid Journal   (Followers: 16, SJR: 0.501, h-index: 19)
Chemical Senses     Hybrid Journal   (Followers: 1, SJR: 1.436, h-index: 76)
Children and Schools     Hybrid Journal   (Followers: 6, SJR: 0.211, h-index: 18)
Chinese J. of Comparative Law     Hybrid Journal   (Followers: 3)
Chinese J. of Intl. Law     Hybrid Journal   (Followers: 21, SJR: 0.737, h-index: 11)
Chinese J. of Intl. Politics     Hybrid Journal   (Followers: 9, SJR: 1.238, h-index: 15)
Christian Bioethics: Non-Ecumenical Studies in Medical Morality     Hybrid Journal   (Followers: 11, SJR: 0.191, h-index: 8)
Classical Receptions J.     Hybrid Journal   (Followers: 22, SJR: 0.1, h-index: 3)
Clinical Infectious Diseases     Hybrid Journal   (Followers: 58, SJR: 4.742, h-index: 261)
Clinical Kidney J.     Open Access   (Followers: 4, SJR: 0.338, h-index: 19)
Community Development J.     Hybrid Journal   (Followers: 24, SJR: 0.47, h-index: 28)
Computer J.     Hybrid Journal   (Followers: 7, SJR: 0.371, h-index: 47)
Conservation Physiology     Open Access   (Followers: 2)
Contemporary Women's Writing     Hybrid Journal   (Followers: 11, SJR: 0.111, h-index: 3)
Contributions to Political Economy     Hybrid Journal   (Followers: 6, SJR: 0.313, h-index: 10)
Critical Values     Full-text available via subscription  
Current Legal Problems     Hybrid Journal   (Followers: 26)
Current Zoology     Full-text available via subscription   (SJR: 0.999, h-index: 20)
Database : The J. of Biological Databases and Curation     Open Access   (Followers: 11, SJR: 1.068, h-index: 24)
Digital Scholarship in the Humanities     Hybrid Journal   (Followers: 12)
Diplomatic History     Hybrid Journal   (Followers: 19, SJR: 0.296, h-index: 22)
DNA Research     Open Access   (Followers: 4, SJR: 2.42, h-index: 77)
Dynamics and Statistics of the Climate System     Open Access   (Followers: 3)
Early Music     Hybrid Journal   (Followers: 14, SJR: 0.124, h-index: 11)
Economic Policy     Hybrid Journal   (Followers: 61, SJR: 2.052, h-index: 52)
ELT J.     Hybrid Journal   (Followers: 25, SJR: 1.26, h-index: 23)
English Historical Review     Hybrid Journal   (Followers: 50, SJR: 0.311, h-index: 10)
English: J. of the English Association     Hybrid Journal   (Followers: 13, SJR: 0.144, h-index: 3)
Environmental Entomology     Full-text available via subscription   (Followers: 11, SJR: 0.791, h-index: 66)
Environmental Epigenetics     Open Access   (Followers: 1)
Environmental History     Hybrid Journal   (Followers: 25, SJR: 0.197, h-index: 25)
EP-Europace     Hybrid Journal   (Followers: 2, SJR: 2.201, h-index: 71)
Epidemiologic Reviews     Hybrid Journal   (Followers: 10, SJR: 3.917, h-index: 81)
ESHRE Monographs     Hybrid Journal  
Essays in Criticism     Hybrid Journal   (Followers: 16, SJR: 0.1, h-index: 6)
European Heart J.     Hybrid Journal   (Followers: 48, SJR: 6.997, h-index: 227)
European Heart J. - Cardiovascular Imaging     Hybrid Journal   (Followers: 8, SJR: 2.044, h-index: 58)
European Heart J. - Cardiovascular Pharmacotherapy     Full-text available via subscription   (Followers: 1)
European Heart J. - Quality of Care and Clinical Outcomes     Hybrid Journal  
European Heart J. Supplements     Hybrid Journal   (Followers: 7, SJR: 0.152, h-index: 31)
European J. of Cardio-Thoracic Surgery     Hybrid Journal   (Followers: 8, SJR: 1.568, h-index: 104)
European J. of Intl. Law     Hybrid Journal   (Followers: 156, SJR: 0.722, h-index: 38)
European J. of Orthodontics     Hybrid Journal   (Followers: 4, SJR: 1.09, h-index: 60)
European J. of Public Health     Hybrid Journal   (Followers: 22, SJR: 1.284, h-index: 64)
European Review of Agricultural Economics     Hybrid Journal   (Followers: 11, SJR: 1.549, h-index: 42)
European Review of Economic History     Hybrid Journal   (Followers: 28, SJR: 0.628, h-index: 24)
European Sociological Review     Hybrid Journal   (Followers: 41, SJR: 2.061, h-index: 53)
Evolution, Medicine, and Public Health     Open Access   (Followers: 11)
Family Practice     Hybrid Journal   (Followers: 11, SJR: 1.048, h-index: 77)
Fems Microbiology Ecology     Hybrid Journal   (Followers: 8, SJR: 1.687, h-index: 115)
Fems Microbiology Letters     Hybrid Journal   (Followers: 20, SJR: 1.126, h-index: 118)
Fems Microbiology Reviews     Hybrid Journal   (Followers: 25, SJR: 7.587, h-index: 150)
Fems Yeast Research     Hybrid Journal   (Followers: 13, SJR: 1.213, h-index: 66)
Foreign Policy Analysis     Hybrid Journal   (Followers: 22, SJR: 0.859, h-index: 10)
Forestry: An Intl. J. of Forest Research     Hybrid Journal   (Followers: 16, SJR: 0.903, h-index: 44)
Forum for Modern Language Studies     Hybrid Journal   (Followers: 6, SJR: 0.108, h-index: 6)
French History     Hybrid Journal   (Followers: 31, SJR: 0.123, h-index: 10)
French Studies     Hybrid Journal   (Followers: 19, SJR: 0.119, h-index: 7)
French Studies Bulletin     Hybrid Journal   (Followers: 10, SJR: 0.102, h-index: 3)
Gastroenterology Report     Open Access   (Followers: 2)
Genome Biology and Evolution     Open Access   (Followers: 10, SJR: 3.22, h-index: 39)
Geophysical J. Intl.     Hybrid Journal   (Followers: 34, SJR: 1.839, h-index: 119)
German History     Hybrid Journal   (Followers: 25, SJR: 0.437, h-index: 13)
GigaScience     Open Access   (Followers: 3)
Global Summitry     Hybrid Journal  
Glycobiology     Hybrid Journal   (Followers: 14, SJR: 1.692, h-index: 101)
Health and Social Work     Hybrid Journal   (Followers: 48, SJR: 0.505, h-index: 40)
Health Education Research     Hybrid Journal   (Followers: 12, SJR: 0.814, h-index: 80)
Health Policy and Planning     Hybrid Journal   (Followers: 19, SJR: 1.628, h-index: 66)
Health Promotion Intl.     Hybrid Journal   (Followers: 21, SJR: 0.664, h-index: 60)
History Workshop J.     Hybrid Journal   (Followers: 26, SJR: 0.313, h-index: 20)
Holocaust and Genocide Studies     Hybrid Journal   (Followers: 24, SJR: 0.115, h-index: 13)
Human Molecular Genetics     Hybrid Journal   (Followers: 9, SJR: 4.288, h-index: 233)
Human Reproduction     Hybrid Journal   (Followers: 78, SJR: 2.271, h-index: 179)
Human Reproduction Update     Hybrid Journal   (Followers: 18, SJR: 4.678, h-index: 128)
Human Rights Law Review     Hybrid Journal   (Followers: 59, SJR: 0.7, h-index: 21)
ICES J. of Marine Science: J. du Conseil     Hybrid Journal   (Followers: 54, SJR: 1.233, h-index: 88)
ICSID Review     Hybrid Journal   (Followers: 10)
ILAR J.     Hybrid Journal   (Followers: 1, SJR: 1.099, h-index: 51)
IMA J. of Applied Mathematics     Hybrid Journal   (SJR: 0.329, h-index: 26)
IMA J. of Management Mathematics     Hybrid Journal   (Followers: 2, SJR: 0.351, h-index: 20)
IMA J. of Mathematical Control and Information     Hybrid Journal   (Followers: 2, SJR: 0.661, h-index: 28)
IMA J. of Numerical Analysis - advance access     Hybrid Journal   (SJR: 2.032, h-index: 44)
Industrial and Corporate Change     Hybrid Journal   (Followers: 8, SJR: 1.37, h-index: 81)
Industrial Law J.     Hybrid Journal   (Followers: 29, SJR: 0.184, h-index: 15)
Information and Inference     Free  
Integrative and Comparative Biology     Hybrid Journal   (Followers: 8, SJR: 1.911, h-index: 90)
Interacting with Computers     Hybrid Journal   (Followers: 10, SJR: 0.529, h-index: 59)
Interactive CardioVascular and Thoracic Surgery     Hybrid Journal   (Followers: 5, SJR: 0.743, h-index: 35)
Intl. Affairs     Hybrid Journal   (Followers: 52, SJR: 1.264, h-index: 53)
Intl. Data Privacy Law     Hybrid Journal   (Followers: 29)
Intl. Health     Hybrid Journal   (Followers: 5, SJR: 0.835, h-index: 15)
Intl. Immunology     Hybrid Journal   (Followers: 3, SJR: 1.613, h-index: 111)
Intl. J. for Quality in Health Care     Hybrid Journal   (Followers: 33, SJR: 1.593, h-index: 69)
Intl. J. of Constitutional Law     Hybrid Journal   (Followers: 60, SJR: 0.613, h-index: 19)
Intl. J. of Epidemiology     Hybrid Journal   (Followers: 159, SJR: 4.381, h-index: 145)
Intl. J. of Law and Information Technology     Hybrid Journal   (Followers: 4, SJR: 0.247, h-index: 8)
Intl. J. of Law, Policy and the Family     Hybrid Journal   (Followers: 29, SJR: 0.307, h-index: 15)
Intl. J. of Lexicography     Hybrid Journal   (Followers: 8, SJR: 0.404, h-index: 18)
Intl. J. of Low-Carbon Technologies     Open Access   (Followers: 1, SJR: 0.457, h-index: 12)
Intl. J. of Neuropsychopharmacology     Open Access   (Followers: 3, SJR: 1.69, h-index: 79)
Intl. J. of Public Opinion Research     Hybrid Journal   (Followers: 9, SJR: 0.906, h-index: 33)
Intl. J. of Refugee Law     Hybrid Journal   (Followers: 33, SJR: 0.231, h-index: 21)
Intl. J. of Transitional Justice     Hybrid Journal   (Followers: 13, SJR: 0.833, h-index: 12)
Intl. Mathematics Research Notices     Hybrid Journal   (Followers: 1, SJR: 2.052, h-index: 42)
Intl. Political Sociology     Hybrid Journal   (Followers: 31, SJR: 1.339, h-index: 19)
Intl. Relations of the Asia-Pacific     Hybrid Journal   (Followers: 18, SJR: 0.539, h-index: 17)
Intl. Studies Perspectives     Hybrid Journal   (Followers: 7, SJR: 0.998, h-index: 28)
Intl. Studies Quarterly     Hybrid Journal   (Followers: 38, SJR: 2.184, h-index: 68)
Intl. Studies Review     Hybrid Journal   (Followers: 18, SJR: 0.783, h-index: 38)
ISLE: Interdisciplinary Studies in Literature and Environment     Hybrid Journal   (Followers: 1, SJR: 0.155, h-index: 4)
ITNOW     Hybrid Journal   (Followers: 2, SJR: 0.102, h-index: 4)
J. of African Economies     Hybrid Journal   (Followers: 15, SJR: 0.647, h-index: 30)
J. of American History     Hybrid Journal   (Followers: 40, SJR: 0.286, h-index: 34)
J. of Analytical Toxicology     Hybrid Journal   (Followers: 13, SJR: 1.038, h-index: 60)
J. of Antimicrobial Chemotherapy     Hybrid Journal   (Followers: 12, SJR: 2.157, h-index: 149)
J. of Antitrust Enforcement     Hybrid Journal   (Followers: 1)
J. of Applied Poultry Research     Hybrid Journal   (Followers: 3, SJR: 0.563, h-index: 43)
J. of Biochemistry     Hybrid Journal   (Followers: 43, SJR: 1.341, h-index: 96)
J. of Chromatographic Science     Hybrid Journal   (Followers: 16, SJR: 0.448, h-index: 42)
J. of Church and State     Hybrid Journal   (Followers: 11, SJR: 0.167, h-index: 11)
J. of Competition Law and Economics     Hybrid Journal   (Followers: 35, SJR: 0.442, h-index: 16)
J. of Complex Networks     Hybrid Journal   (Followers: 1, SJR: 1.165, h-index: 5)
J. of Conflict and Security Law     Hybrid Journal   (Followers: 12, SJR: 0.196, h-index: 15)
J. of Consumer Research     Full-text available via subscription   (Followers: 42, SJR: 4.896, h-index: 121)
J. of Crohn's and Colitis     Hybrid Journal   (Followers: 10, SJR: 1.543, h-index: 37)
J. of Cybersecurity     Hybrid Journal   (Followers: 3)
J. of Deaf Studies and Deaf Education     Hybrid Journal   (Followers: 9, SJR: 0.69, h-index: 36)
J. of Design History     Hybrid Journal   (Followers: 16, SJR: 0.166, h-index: 14)
J. of Economic Entomology     Full-text available via subscription   (Followers: 6, SJR: 0.894, h-index: 76)
J. of Economic Geography     Hybrid Journal   (Followers: 40, SJR: 2.909, h-index: 69)
J. of Environmental Law     Hybrid Journal   (Followers: 23, SJR: 0.457, h-index: 20)
J. of European Competition Law & Practice     Hybrid Journal   (Followers: 19)
J. of Experimental Botany     Hybrid Journal   (Followers: 14, SJR: 2.798, h-index: 163)
J. of Financial Econometrics     Hybrid Journal   (Followers: 23, SJR: 1.314, h-index: 27)
J. of Global Security Studies     Hybrid Journal   (Followers: 3)
J. of Heredity     Hybrid Journal   (Followers: 4, SJR: 1.024, h-index: 76)
J. of Hindu Studies     Hybrid Journal   (Followers: 7, SJR: 0.186, h-index: 3)
J. of Hip Preservation Surgery     Open Access  
J. of Human Rights Practice     Hybrid Journal   (Followers: 20, SJR: 0.399, h-index: 10)
J. of Infectious Diseases     Hybrid Journal   (Followers: 40, SJR: 4, h-index: 209)
J. of Insect Science     Open Access   (Followers: 9, SJR: 0.388, h-index: 31)

        1 2 | Last   [Sort by number of followers]   [Restore default list]

Journal Cover Journal of Applied Poultry Research
  [SJR: 0.563]   [H-I: 43]   [3 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1056-6171 - ISSN (Online) 1537-0437
   Published by Oxford University Press Homepage  [370 journals]
  • Optimizing Enrichment of Campylobacter on poultry
    • Authors: Hill GN; Bratcher CL, Wang LL, et al.
      Pages: 307 - 315
      Abstract: AbstractPoultry meat represents the primary source of Campylobacter-associated foodborne illness. Current methods set forth by USDA-FSIS for qualitative detection of Campylobacter from poultry involve selective enrichment to enhance recovery of cells. Due to the time and expense associated with these methods, there is a demand for more effective and economical methods of analysis. This research was conducted in efforts to optimize selective enrichment of Campylobacter, while reducing time and cost associated with detection. The objectives of this study were to optimize selective enrichment of Campylobacter by evaluating growth of Campylobacter jejuni throughout 48 h in various modified enrichment media, and to compare detection of Campylobacter from poultry rinse samples after enrichment in optimized media. Growth of C. jejuni in Brucella-Fructose-1, 6-bisphosphate (FBP) was improved (P ≤ 0.05) at 12, 24, and 48 hours. Evaluation of modified Brucella broth demonstrated improved growth (P ≤ 0.05) of C. jejuni at both 12 h and 48 h compared to Bolton's enrichment broth base incorporated with inhibitors. Enrichment of poultry rinse samples in modified Brucella for 12 h also showed improved detection (P ≤ 0.05) of natural levels of Campylobacter on carcasses compared to enrichment in blood-free Bolton's enrichment broth. Finally, cost analysis revealed that preparing one liter of modified Brucella medium can prove more economical without impacting recovery. The results of this study provide the industry with improved methods for enrichment and detection of Campylobacter, while also reducing the cost associated with analysis.
      PubDate: 2017-02-16
      DOI: 10.3382/japr/pfw075
      Issue No: Vol. 26, No. 3 (2017)
       
  • Efficacy of Lactobacillus plantarum supplementation in broilers challenged
           with avian pathogenic Escherichia coli and Salmonella Typhimurium
    • Authors: Foltz KL; Ritzi MM, Barrett NW, et al.
      Pages: 316 - 324
      Abstract: AbstractTwo experiments were conducted to determine the effects of Lactobacillus plantarum (DFM) on performance in broilers challenged with avian pathogenic Escherichia coli (APEC) and its effects on Salmonella colonization following S. Typhimurium challenge. In experiment 1, broilers were reared from d zero to 28 and orally challenged with 1 × 108 CFU of APEC on d 7. Treatments included a non-challenged positive control (PC), challenged negative control (NC), NC + 0.05, 0.10, or 0.20% DFM, and NC + 0.05% antibiotic (BMD). Body weight (BW) was not different among treatments. Mortality-corrected feed conversion ratio (FCRm) was increased with APEC challenge in comparison to the PC, while BMD returned FCRm to that of the PC (P ≤ 0.05). Treatment with 0.10% DFM resulted in the largest relative spleen weight (SW: % BW) at d 14, but also resulted in the lowest number of APEC associated mortalities, suggesting an enhanced immune response. In experiment 2, one-day-old broilers were orally challenged with 1 × 108 CFU of S. Typhimurium and fed a control diet (PC), or the same diet with 0.10 or 0.20% DFM. Intestinal samples were collected for determination of Salmonella colonization by the most probable number method at d 3 and d 7 post inoculation, and bioluminescence imaging using In-Vivo Imaging System at d 7 post inoculation. Treatment with DFM reduced total Salmonella content on d 7, but changes in bioluminescence were not significant. Overall, DFM treatment was concentration specific, but did result in positive responses to both APEC challenge and total Salmonella counts.
      PubDate: 2017-01-23
      DOI: 10.3382/japr/pfw074
      Issue No: Vol. 26, No. 3 (2017)
       
  • Do fecal and litter microbiomes vary within the major areas of a
           commercial poultry house, and does this affect sampling strategies for
           whole-house microbiomic studies'
    • Authors: Locatelli A; Hiett KL, Caudill AC, et al.
      Pages: 325 - 336
      Abstract: AbstractThe microbiota of the live production environment can directly shape the gastrointestinal microbiome of chickens and indirectly influence the health of birds. Therefore, numerous studies have attempted to characterize the microbial communities in litter and chicken feces from commercial poultry houses, but many treat a poultry house as a single sampling unit. Unfortunately, a poultry house has distinct areas (e.g., waterer/feeder, near fans, cooling pads), so effective sampling strategies need to be developed to account for this heterogeneity, especially when costlier microbiomic analyses are used to assess whole-house microbial diversity. Therefore, the goals of this study were to assess the spatial variability of the poultry litter and fecal microbiomes from distinct areas within a poultry house and to compare composite “whole-house” microbiomes pooled from all house areas, either (1) physically prior to DNA extraction or (2) combined in silico after sample processing (during DNA sequence analysis). No significant differences in α-diversity metrics (richness, diversity, evenness) were observed for fecal or litter microbiomes recovered from the different areas of the house, but β-diversity (litter only) and genus-level Operational Taxonomic Units (OTU) relative abundances (for fecal and litter) were found to be significantly different based on sampling area within the house. Additionally, the sample pooling method produced distinct composite fecal microbiomic profiles, but the litter microbiomes were unaffected. These results indicate that sample type, sampling area, and sample pooling method need to be carefully considered when determining appropriate sampling strategies for generating representative composite whole-house microbiomes for future microbiological-based live production studies.
      PubDate: 2017-02-16
      DOI: 10.3382/japr/pfw076
      Issue No: Vol. 26, No. 3 (2017)
       
  • Productive performance and egg quality of laying hens fed diets
           supplemented with garlic and onion extracts
    • Authors: Damaziak KK; Riedel JJ, Gozdowski DD, et al.
      Pages: 337 - 349
      Abstract: AbstractThe study was aimed at evaluating the effect of supplementing a diet for laying hens with onion and garlic extracts on their productive performance and egg quality. Two-hundred-sixteen laying hens were divided into 3 groups: standard diet, diet with a 0.0032% addition of onion extract, and diet with a 0.0032% addition of garlic extract. The egg production rate, egg weight, and feed conversion ratio were monitored within the first 17 wk of the laying period. In wk 6, 8, 10, 12, 14, and 16 of the laying period, eggs were analyzed for: weight, weight to yolk ratio, yolk color, albumen quality, and eggshell quality. In wk 7 and 15 of the laying period, analyses were conducted for: yolk color, consistency, aroma, and taste of boiled eggs. The addition of a garlic extract had a positive effect on the production rate in the initial and peak egg-laying period, and significantly determined the aroma and, in the further stage of the production process, also taste of boiled eggs. Administration of the diet with onion extract to hens caused them to begin the egg-laying period later but laying heavier eggs, with a higher content of egg yolk and better quality of albumen. The analysis of the productive performance of hens and quality of eggs indicates the advisability of applying the extract from garlic in commercial flocks of laying hens. In the future, it seems substantiated to analyze the effect of extract supplementation at the end of the laying period.
      PubDate: 2017-02-16
      DOI: 10.3382/japr/pfx001
      Issue No: Vol. 26, No. 3 (2017)
       
  • Effect of yeast mannan-rich fractions on reducing Campylobacter
           colonization in broiler chickens
    • Authors: Corrigan AA; Corcionivoschi NN, Murphy RA.
      Pages: 350 - 357
      Abstract: AbstractCampylobacteriosis is considered to be the most frequently reported cause of zoonotic illness globally, with poultry being the main source of infection. Reducing the colonization level of Campylobacter spp. in broilers entering the processing unit could make an effective contribution at reducing the incidence of zoonotic transmission of this pathogen. It is essential to search for new, natural, and sustainable strategies to reduce the incidence of this bacterium in the broiler cecum. The aim of this study was to examine whether dietary supplementation of broilers with 3 different yeast mannan-rich fraction (MRF) supplements (supplements 1 to 3) reduced the level of natural Campylobacter spp. colonization in the broiler cecum. Birds were allowed to naturally become colonized with Campylobacter spp. from the environment. Weight gains and feed conversion ratios were measured throughout production. All 3 MRF based supplements resulted in higher weight gains over 35 d when compared with the control. Broiler pens were tested at d 21 post hatch using the boot swab method and confirmed Campylobacter spp. presence in the flock. At d 35 post hatch, colonization levels were measured using serial dilution plate counts and quantitative polymerase chain reaction (qPCR) of cecal material. Enumeration of Campylobacter colonization level in cecal content by qPCR showed that both supplement 2 and supplement 3 significantly reduced the levels of Campylobacter spp. colonization in the broiler cecum at 35 days. In conclusion, under the conditions of this study, MRF based supplements significantly reduced Campylobacter colonisation levels in the broiler cecum while also offering improvements in weight gain.
      PubDate: 2017-02-22
      DOI: 10.3382/japr/pfx002
      Issue No: Vol. 26, No. 3 (2017)
       
  • A new type of defatted green microalgae exerts dose-dependent nutritional,
           metabolic, and environmental impacts in broiler chicks
    • Authors: Gatrell SK; Derksen TJ, O’Neil EV, et al.
      Pages: 358 - 366
      Abstract: AbstractThe potential of defatted microalgae from biofuel production in animal feeding remains unclear. The objective of this experiment was to determine the metabolic and environmental impacts of a defatted green microalgal biomass (DGA, Nannochloropsis oceanica, Cellana, Kailua-Kona, HI) in broiler chick diets. Day-old chicks (total = 180) were fed the control diet containing zero, 2, 4, 8, or 16% of DGA for 6 wk to determine the optimal level of DGA inclusion. Compared with chicks fed the control diet, only those fed the 16% DGA diet had lower (P < 0.05) ADG and feed use efficiency. The DGA feeding produced dose-dependent (linear) increases in starter period water intake (P < 0.0001, R2 = 0.76) and in wk 6 relative weights of heart (P < 0.0001, R2 = 0.45), liver (P = 0.09, R2 = 0.19), and intestinal tract (P = 0.02, R2 = 0.19), retentions of soluble inorganic phosphorus (P = 0.001, R2 = 0.39) and DNA retention (P = 0.001, R2 = 0.46), and ileal DNA content (P < 0.0001, R2 = 0.50). Meanwhile, the DGA feeding led to weak linear decreases (P < 0.05, R2 = 0.14 to 0.27) in wk 6 tibia weight and length and excretion of soluble inorganic phosphorus. In contrast, the DGA feeding did not affect relative weights of breast, proventriculus, or gizzard, tibial bone strength, or plasma DNA concentrations. In conclusion, this new type of DGA biomass may be supplemented into diets for broilers at 8% without adverse effects if the salt content is decreased.
      PubDate: 2017-03-03
      DOI: 10.3382/japr/pfx003
      Issue No: Vol. 26, No. 3 (2017)
       
  • Effects of low-dose zearalenone-contaminated diets with or without
           montmorillonite clay adsorbent on nutrient metabolic rates, serum enzyme
           activities, and genital organs of growing-laying hens
    • Authors: Cheng QQ; Jiang SZ, Li SQ, et al.
      Pages: 367 - 375
      Abstract: AbstractWe investigated the effects of the mycotoxin zearalenone (ZEA) on nutrient availability, serum enzyme activities, and genital organ indices of growing-laying hens, and the mitigating effects of a montmorillonite clay adsorbent Calibrin-A (CA) was also evaluated. The experiment was conducted for 49 d using 720 70-day-old Hy-Line Brown growing-laying hens. Hens fed a corn-soybean meal-whey basal diet or ZEA-contaminated diets with or without CA. The treatments were as follows: (1) (Control); (2) Control + 0.15% CA; (3) ZEA0.4; and (4) ZEA0.4 + 0.15% CA. Zearalenone contaminated diet had no effect (P > 0.05) on apparent metabolic rate. In hens fed the ZEA0.4 diet, serum aspartate amino transferase (AST) and alkaline phosphatase (ALP) activities had significantly increased compared with control (P < 0.05). Relative oviduct weight and relative ovary weight were heavier in hens fed the ZEA0.4 diet than in the control group (P < 0.05). Degeneration and atrophy of the ovarian tissues was also found in hens fed the ZEA0.4 diet. The result reflects granular film of developing follicles in ovarian follicular wall portion and the intima separate theca folliculi. Addition of clay adsorbent in the ZEA0.4 diet showed a positive protective effect on ZEA toxicity. In hens fed a basal diet with clay alone, there was no significant impact (P > 0.05) on any variable compared to the control. In conclusion, feeding a 0.4 mg/kg ZEA0.4 diet for 49 days might result in deleterious effects on growing-laying hens, and the addition of CA can effectively neutralize the detrimental effects of ZEA.
      PubDate: 2017-06-08
      DOI: 10.3382/japr/pfx004
      Issue No: Vol. 26, No. 3 (2017)
       
  • Physiological responses and performance of broiler chickens offered olive
           leaf extract under a hot humid tropical climate
    • Authors: Oke OE; Emeshili UK, Iyasere OS, et al.
      Pages: 376 - 382
      Abstract: AbstractThis study was designed to determine the effects of olive leaf extract (OLE) supplementation in the drinking water on growth performance, hematological parameters, plasma triiodothyronine and malondialdeyde, superoxide dismutase, and rectal temperature of broiler chickens under a hot-humid tropical climate. Two hundred and forty Arbor acre broiler chickens were used for this experiment and were allotted to four treatments comprising four replicates of 15 birds each. The birds were offered OLE per liter of water at various levels (0, 5, 10, or 15 mL) in a completely randomized design. Rectal temperature (RT), hematological indices, weight, weight gains, feed consumed, feed conversion ratio, and plasma triiodothyronine (T3) were the parameters measured. The results obtained showed that the plasma T3 of the birds offered 15 mL OLE was higher (P < 0.05) than those of the birds in the other treatment groups. Significant differences (P < 0.05) were observed in the feed intake (DFI), total feed intake (TFI), final weight (FW), total weight gain (TWG), and feed conversion ratio (FCR) among treatments. The DFI, TFI, FW, TWG, and FCR of broilers offered 15 mL OLE were significantly (P < 0.05) better than those offered the 10 mL and 5 mL levels. It was concluded that inclusion of 15 mL of OLE enhanced the performance of broiler chickens during the hot dry season.
      PubDate: 2017-04-13
      DOI: 10.3382/japr/pfx005
      Issue No: Vol. 26, No. 3 (2017)
       
  • Effect of corn replacement with enzose (corn dextrose) on growth
           performance and nutrient digestibility in broilers
    • Authors: Sultan JI; Iqbal ZZ, Kamran ZZ, et al.
      Pages: 383 - 390
      Abstract: AbstractEnzose (corn dextrose), a by-product of wet milling of corn, is a light-amber colored liquid derived from enzymatic conversion of cornstarch to dextrose. The present study was planned to investigate the effect of corn replacement with enzose on growth performance and nutrient digestibility in broilers from one to 42 d of age. A total of 300 one-day-old straight run Hubbard broiler chickens was randomly divided into 30 experimental units of 10 chicks each. A starter control diet was formulated having 21% CP, 2,900 kcal/kg metabolizable energy (ME), and 0% enzose (ENZ0: maize 50%, enzose 0%). The other iso-caloric and iso-nitrogenous dietary treatments were obtained by replacing the maize on a wt:wt ratio, with 2.5, 5, 7.5, and 10% enzose in the control diet (ENZ2.5: maize 47.5%, enzose 2.5%; ENZ5: maize 45%, enzose 5%; ENZ7.5: maize 42.5%, enzose 7.5%, and ENZ10: maize 40%, enzose 10%). Likewise, a finisher control diet (19% CP, 3,000 kcal/kg ME, and 0% enzose) and other dietary treatments (iso-caloric and iso-nitrogenous) were formulated having the same level of maize and enzose as in the starter diets. Each dietary treatment was randomly allotted to 6 replicate pens. Starter and finisher diets were offered ad libitum from one to 21 and 22 to 42 d of age, respectively. Corn replacement with enzose resulted in linear improvement (P < 0.001) in feed intake, weight gain, and feed conversion ratio during all growth periods. Mortality was non-significant among dietary treatments (P > 0.05). Although there were variable results, some enzose supplementation concentrations showed increased digestibility of dry matter, CP, crude fiber, and ether extract (P < 0.001) as compared to the ENZ0 group in general. Higher dietary enzose concentrations resulted in considerable economic returns as compared to the ENZ0 diet. In conclusion, the corn replacement with enzose in broiler diets resulted in improved growth performance and nutrient digestibility with increased economic returns without any harmful effect on survival of birds.
      PubDate: 2017-04-20
      DOI: 10.3382/japr/pfx006
      Issue No: Vol. 26, No. 3 (2017)
       
  • Gene expression and plasma lipid content in relation to intramuscular fat
           in Chinese indigenous Wuhua chicken
    • Authors: Chen X; Niu J, Geng Z.
      Pages: 391 - 400
      Abstract: AbstractThe deposition pattern of intramuscular fat (IMF), inosine monophosphate (IMP), and fat metabolism related gene expression profiles were studied in Wuhua chickens. A total of 160 healthy birds (80 of each gender) was reared. Ten birds from each gender were randomly selected at 90, 120, 150, and 180 d of age for blood and tissue sample collection. There were no changes in male IMF content that ranged from 0.9 to 1.79 mg/g. In females, there were large differences in IMF content, which increased from 0.62 mg/g at 90 d to the highest level of 2.61 mg/g at 150 d (P = 0.015). No statistical changes were observed in IMP content in both males and females. In females, very low density lipoprotein (VLDL) exhibited an age dependent manner and reached the highest level of 64.93 mg/mL at 180 d, while the low density lipoprotein (LDL) reached the highest level at 120 d (1.35 nmol/L). Serum triglycerides (TG) increased to the highest level of 1.3 nmol/L at 180 d (P = 0.0003). In males, TG reached the highest level at 120 d (P = 0.035). The A-FABP mRNA expression was highest at 180 d of age in males (P = 0.017). The Apo-B and PPAR-γ genes expressed the highest levels around 150 d of age in female chickens. Higher plasma TG was associated with greater breast IMF in both males and females. The correlation coefficient between IMF and PPAR-γ expression was 0.875 (P = 0.065) in females. Plasma TG might be used as a potential index for breast IMF selection, and PPAR-γ might be used as a candidate gene for IMF selection in females.
      PubDate: 2017-04-20
      DOI: 10.3382/japr/pfx007
      Issue No: Vol. 26, No. 3 (2017)
       
  • Comparative evaluation of egg morphometry and quality in Aseel hens under
           different rearing systems
    • Authors: Rehman MS; Mahmud AA, Mehmood SS, et al.
      Pages: 401 - 409
      Abstract: AbstractThe aim of the present study was to explore the effect of 3 different rearing systems (free-range [FR], semi-intensive [SI], and confinement) on egg quality traits in 4 varieties of Aseel hens (Lakha, Mushki, Peshawari, and Sindhi). A total of 252, 29-week-old Aseel hens was allotted to 12 treatment groups, in a 3 × 4 factorial arrangement under randomized complete block design, replicated 3 times with 7 birds each. Data regarding egg physical and internal quality traits were recorded fortnightly and analyzed by using the ANOVA technique under a factorial arrangement. The results indicated higher (P < 0.05) egg weight, length, breadth, volume, and surface area in Sindhi, whereas shape index and Haugh unit score were found to be greater in Lakha. Rearing systems revealed similar effects (P > 0.05) on egg quality traits. Interaction of the rearing system and Aseel variety exhibited variations (P < 0.05) in egg length, breadth, volume, and surface area, whereas shape index, eggshell thickness, Haugh unit, and yolk index remained unaffected (P > 0.05). It can be concluded that Sindhi and Lakha hens demonstrated better egg physical and internal qualities. Likewise, no adverse effect of the FR system on egg quality was observed, and small poultry farmers can raise Aseel hens in alternative rearing systems (SI and FR) to earn their livelihoods.
      PubDate: 2017-04-13
      DOI: 10.3382/japr/pfx008
      Issue No: Vol. 26, No. 3 (2017)
       
  • Self-contained chlorine dioxide generation and delivery pods for
           decontamination of floor drains 1
    • Authors: Berrang ME; Harrison MA, Meinersmann RJ, et al.
      Pages: 410 - 415
      Abstract: AbstractListeria monocytogenes can be present in poultry processing and further processing plants, where it can colonize floor drains. This is a concern as the potential exists for cross-contamination of product contact surfaces or even fully cooked product. Self-contained chlorine dioxide-generating and delivery pods were tested as a means to sanitize uninoculated floor drains and L. monocytogenes-inoculated model floor drains. Free-swimming and attached bacteria were enumerated in drains. Standing water and the inner surface of treated drains had significantly lower bacterial numbers than did untreated drains. Listeria monocytogenes numbers decreased by up to 8.7 log cfu/mL in standing water (>99.999999%) and 6.7 log cfu (>99.9999%) as attached cells. Commercially available chlorine dioxide pods may have practical utility for killing L. monocytogenes during periodic sanitization of floor drains in poultry processing facilities.
      PubDate: 2017-04-20
      DOI: 10.3382/japr/pfx009
      Issue No: Vol. 26, No. 3 (2017)
       
  • Application of a micro-aerosolized disinfectant to clear Mycoplasma
           gallisepticum from contaminated facilities 1
    • Authors: Evans JD; Branton SL, Collier SD, et al.
      Pages: 416 - 420
      Abstract: AbstractInfectious agents and their associated diseases can be significant barriers in the production of poultry and zoonotic agents associated with poultry flocks can ultimately endanger consumers. To this end, poultry producers employ a variety of strategies to minimize associated risks. Disinfectants are widely utilized in the poultry industry to limit encounters with avian pathogens and zoonotic agents. These disinfectants are readily applied by a variety of means to both equipment and facilities to reduce pathogenic populations and minimize their associated risk. While a variety of disinfectants and application means are currently available, the search for more efficacious products and technologies continues. Recently, technology has been developed that may be applicable to the poultry industry for pathogen reduction. The NebuPure™ disinfecting system was developed as a means to decontaminate facilities harboring human pathogens. The system utilizes a novel dispersal unit to suspend an electrochemically activated solution in enclosed facilities and allows for largely automated decontamination. To test the NebuPure™ disinfecting system for poultry-related applications, a research facility was seeded with plate cultures of the avian respiratory pathogen Mycoplasma gallisepticum (MG). The facility was then treated with the NebuPure™ disinfecting system with exposure times of 1 or 4 h. Following incubation, no growth was observed among exposed plates, while control plates were 100% positive for MG. The research demonstrates the efficacy of the NebuPure™ disinfecting system for disinfecting MG-contaminated facilities and indicates that the system may be used against other poultry-associated pathogens.
      PubDate: 2017-04-28
      DOI: 10.3382/japr/pfx010
      Issue No: Vol. 26, No. 3 (2017)
       
  • The effect of dietary supplementation of transcarpathian zeolite on
           intestinal morphology in female broiler chickens
    • Authors: Wawrzyniak A; Kapica M, Stępień-Pyśniak D, et al.
      Pages: 421 - 430
      Abstract: AbstractZeolites occur in nature in specific types of rocks, mostly of volcanic origin. Some studies have proved that zeolite added as a dietary supplement in poultry results in weight gain and improves digestion because zeolites slow down the passage rate of digesta through the digestive tract and controls the release of nutrients in the small intestine. The aim of this study was to investigate the effects of different levels of zeolite on intestinal morphometry in female broiler chickens. One-day-old Ross 308 broilers were assigned randomly into 3 groups, with 30 birds per treatment. The 3 dietary treatments were: basal diet only (control group), basal diet + 2% zeolite, and basal diet + 3% zeolite. The broiler females were randomly selected from each group, slaughtered samples from duodenum, jejunum /proximal, middle, distal/ and ileum were sampled for histological characteristics at the 40 d of the study. The broilers fed 2% of zeolite were observed to have a tendency towards increased villus height, villus width, villus perimeter, villus section area, and crypt depth throughout the distal regions of small intestine and ileum. Supplementation with 3% of zeolite was associated with a greater villus height, villus width, villus perimeter, villus section area, villus crypts, and mucosa thickness in jejunum and ileum mucosa compared with those same areas in the control. The results suggest that dietary supplementation of zeolite increases intestinal morphology parameters in the gastrointestinal tract of female broiler chickens that improved growth performance.
      PubDate: 2017-05-03
      DOI: 10.3382/japr/pfx011
      Issue No: Vol. 26, No. 3 (2017)
       
  • Impact of eliminating the carcass chilling step in the production of
           pre-cooked chicken breast meat 1
    • Authors: Zhuang HH; Bowker BC, Berrang ME, et al.
      Pages: 431 - 436
      Abstract: AbstractPre-cooked chicken meat products provide convenience to consumers and are growing in popularity globally. Poultry meat destined for pre-cooked meat products typically undergoes chilling on the carcass skeletal frame and deboning before cooking. However, cooking products directly without prior carcass chilling has the potential to reduce energy costs and more effectively destroy microorganisms. The objective of this study was to compare the use of non-chilled chicken fillets (either hot-boned or left intact on carcasses) to chilled fillets for pre-cooked products. Broiler carcasses were collected from the processing line immediately after evisceration. Fillets were either deboned or left intact on carcasses and cooked either directly without prior carcass chilling or deboned and cooked immediately after chilling. The tenderness of cooked products was estimated with the blunt Meullenet-Owens Razor Shear test. Results showed no difference (P > 0.05) in shear measurements between cooked non-chilled fillets and cooked chilled fillets regardless of deboning. Leaving fillets intact on carcasses during cooking resulted in lower shear values compared to deboned fillets regardless of chilling. There were no significant differences (P > 0.05) in cook yield between non-chilled fillets and chilled fillets. These results demonstrate that compared to chilled fillets, non-chilled fillets can be used for pre-cooked chicken breast meat in commercial practice without adverse effects on meat tenderness or cook yield. Fillets left intact on carcasses during cooking significantly improves shear of finished products.
      PubDate: 2017-04-28
      DOI: 10.3382/japr/pfx012
      Issue No: Vol. 26, No. 3 (2017)
       
  • Salmonella Pullorum resistance in dwarf chickens selected for high
           macrophage phagocytosis
    • Authors: Ma H; Lian ZX, Liu WB, et al.
      Pages: 437 - 448
      Abstract: AbstractThis experiment was conducted to investigate the differences in disease resistance, production traits, and molecular mechanisms in 2 chicken lines with continuing breeding to generation 2 (G2) and generation 3 (G3) according to macrophage phagocytosis. Chickens were divided into high- and low-phagocytic groups according to macrophage phagocytosis. The natural infection rate of Salmonella Pullorum of progeny from different phagocytic groups was detected by slide agglutination. Production traits were calculated upon hatching. Pro-inflammatory cytokine and MHC mRNA expression of different phagocytic chickens in G2 and G3 were tested by quantitative real-time PCR (qPCR). Nitric oxide (NO) was tested by the Griess reaction assay. The results showed that 1) natural infection rate of Salmonella Pullorum of progeny from high phagocytosis product group (HPPG) hens was 6.4% ± 0.92%, which was significantly lower than that of progeny from low phagocytosis product group (LPPG) hens (19.7% ± 2.66%) in G3. 2) For production traits, fertilization, hatchability of fertilized eggs and rate of healthy chicks of high phagocytic index group (HPIG) hens were significantly higher than those of low phagocytic index group (LPIG) hens in G0. Rate of healthy chicks of HPPG hens was 0.96 ± 0.16, which was significantly higher than that of LPPG hens (0.91 ± 0.14) in G1. 3) Heritability of macrophage phagocytosis was 0.31 based on data from 2,666 chickens from 3 generations. 4) When stimulated with LPS, an analogue of Salmonella, macrophages cultured in vitro from high phagocytic chickens had higher levels of pro-inflammatory cytokine mRNA expression, MHC mRNA expression and NO than those from low-phagocytic chickens. Overall, macrophage phagocytosis was a useful marker in breeding of Salmonella Pullorum resistant lines of dwarf chickens.
      PubDate: 2017-07-11
      DOI: 10.3382/japr/pfx013
      Issue No: Vol. 26, No. 3 (2017)
       
  • Reintroduction of microflora from necrotic enteritis-resistant chickens
           reduces gross lesions and improves performance of necrotic
           enteritis-challenged broilers
    • Authors: Keerqin CC; Morgan NK, Wu SB, et al.
      Pages: 449 - 457
      Abstract: AbstractProbiotics feature one or multiple strains of viable bacteria that beneficially modulate the intestinal health of the host. The key criteria for probiotics, like all feed additives, are that they must be safe and efficacious to use. One of the efficacious measures for probiotics used in poultry feed is their ability to act as an alternative to in-feed antibiotics against economically significant diseases like necrotic enteritis (NE). The current study investigated the effect of the reintroduction of crude ileal and cecal contents from previously NE-challenged chickens on performance, mortality, and intestinal lesions of young broilers under NE challenge. As expected, a subclinical NE challenge depressed bird performance (P < 0.001) and caused intestinal damage. Cloacal administration of both ileal and cecal crude flora inoculants significantly (P = 0.021) improved feed conversion efficiency at d 35. The severity of NE-associated intestinal lesions also was alleviated by the inoculants (P = 0.049), whereby cecal flora inoculant markedly reduced lesion scores in challenged birds, and the ileal crude flora inoculum numerically improved lesion score. These preliminary findings suggest that the gut microbiome of birds plays a significant role in the susceptibility of broilers to NE, and more work is required to elucidate the mechanisms by which this occurs.
      PubDate: 2017-07-11
      DOI: 10.3382/japr/pfx015
      Issue No: Vol. 26, No. 3 (2017)
       
 
 
JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
 
Home (Search)
Subjects A-Z
Publishers A-Z
Customise
APIs
Your IP address: 54.80.26.116
 
About JournalTOCs
API
Help
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-2016