 Subjects -> VETERINARY SCIENCE (Total: 220 journals)
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- AHR volume 23 issue 2 Cover and Front matter
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Pages: 1 - 1
PubDate: 2023-03-15
DOI: 10.1017/S1466252323000014
- Use of antimicrobials in the treatment of calf diarrhea: a systematic
review-
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Authors: Bernal-Córdoba; C., Branco-Lopes, R., Latorre-Segura, L., de Barros-Abreu, M., Fausak, E. D., Silva-del-Río, N.
Pages: 101 - 112
Abstract: The objective of this study was to conduct a systematic review of the scientific literature evaluating the efficacy and comparative efficacy of antimicrobials (AMs) for the treatment of diarrhea in calves. Eligible studies were non- and randomized controlled trials evaluating an AM intervention against a positive and negative control, with at least one of the following outcomes: fecal consistency score, fever, dehydration, appetite, attitude, weight gain, and mortality. Four electronic databases were searched. Titles and abstracts (three reviewers) and full texts (two reviewers) were screened. A total of 2899 studies were retrieved; 11 studies met the inclusion criteria. The risk of bias was assessed. Most studies had incomplete reporting of trial design and results. Eight studies compared AMs to a negative control (placebo or no treatment). Among eligible studies, the most common outcomes reported were diarrhea severity (n = 6) and mortality (n = 6). Eligible studies evaluated very different interventions and outcomes; thus, a meta-analysis was not performed. The risk of bias assessment revealed concerns with reporting of key trial features, including disease and outcome definitions. Insufficient evidence is available in the scientific literature to assess the efficacy of AMs in treating calf diarrhea.
PubDate: 2023-01-13
DOI: 10.1017/S1466252322000032
- Biotherapeutic microbial supplementation for ameliorating fish health:
developing trends in probiotics, prebiotics, and synbiotics use in finfish
aquaculture-
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Authors: Puri; Parul, Sharma, Jai Gopal, Singh, Ram
Pages: 113 - 135
Abstract: Nutrition demands in aquaculture can be realized through quality aquafeeds as compounded diets that contribute to the growth and health of aquaculture species. Functional additives in feed, notably probiotics, prebiotics, and their admixture synbiotics, have been recently recognized for their biotherapeutic role as immunostimulants capable of conferring disease resistance, stress tolerance, and gastrointestinal health; counteracting the negative effects of anti-nutrients, pathogenic prevalence, and antimicrobials in finfish aquaculture. Formulated diets based on probiotics, prebiotics, and as a supplemental combination for synbiotics can significantly influence fish gut microbiomes, establishing the modalities of microbial dynamics to maximize host-associated benefits. These microbial functional-feed supplements are acclaimed to be biocompatible, biodegradable, and safe for dietary consumption as well as the environment. In fed fish aquaculture, prebiotic appended probiotic diet ‘synbiotic’ has propounded larger attention for its additional health and nutritional benefits. Synbiotic, prebiotic, and probiotic usage as functional feeds for finfish aquaculture thus provides promising prospects. Developing trends in their intended application are reviewed here forth.
PubDate: 2023-01-04
DOI: 10.1017/S1466252321000165
- Definition of low birth weight in domestic mammals: a scoping review
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Authors: Mugnier; Amélie, Chastant, Sylvie, Lyazrhi, Faouzi, Saegerman, Claude, Grellet, Aurélien
Pages: 157 - 164
Abstract: In people and animals, low birth weight (LBW) is recognized as highly predictive of health trajectory from the neonatal period to elderly ages. Regarding the neonatal period, although LBW is recognized as a major risk factor for neonatal mortality, there does not appear to be a clear definition of ‘when a birth weight should be considered low’ in all species. The aim of this work was to use the scientific literature available to map the various thresholds proposed to define LBW in domestic mammals. Using a standardized methodology, a scoping review was conducted through a literature search in three different bibliographic databases. After a two-step screening of 1729 abstracts and full-text publications by two independent reviewers, eleven studies met the inclusion criteria. Selected publications represented six mammalian species (rat, mouse, dog, pig, cow, and rabbit). Birth weight thresholds were identified through six different methods. In addition to the scarcity of scientific literature about the definition of LBW, this scoping review revealed the lack of standardization for the description, evaluation or the pertinence these definitions. Because the health consequences of LBW could be preventable, providing early identification of at-risk neonates, a consensus for the standardized definition of LBW is required.
PubDate: 2023-01-13
DOI: 10.1017/S146625232200007X
- Dietary fiber and its role in performance, welfare, and health of pigs
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Authors: Grześkowiak; Ł., Saliu, E.-M., Martínez-Vallespín, B., Aschenbach, J. R., Brockmann, G. A., Fulde, M., Hartmann, S., Kuhla, B., Lucius, R., Metges, C. C., Rothkötter, H. J., Vahjen, W., Wessels, A. G., Zentek, J.
Pages: 165 - 193
Abstract: Dietary fiber (DF) is receiving increasing attention, and its importance in pig nutrition is now acknowledged. Although DF for pigs was frowned upon for a long time because of reductions in energy intake and digestibility of other nutrients, it has become clear that feeding DF to pigs can affect their well-being and health. This review aims to summarize the state of knowledge of studies on DF in pigs, with an emphasis on the underlying mode of action, by considering research using DF in sows as well as suckling and weaned piglets, and fattening pigs. These studies indicate that DF can benefit the digestive tracts and the health of pigs, if certain conditions or restrictions are considered, such as concentration in the feed and fermentability. Besides the chemical composition and the impact on energy and nutrient digestibility, it is also necessary to evaluate the possible physical and physiologic effects on intestinal function and intestinal microbiota, to better understand the relation of DF to animal health and welfare. Future research should be designed to provide a better mechanistic understanding of the physiologic effects of DF in pigs.
PubDate: 2023-01-23
DOI: 10.1017/S1466252322000081
- Applications of butyric acid in poultry production: the dynamics of gut
health, performance, nutrient utilization, egg quality, and osteoporosis-
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Authors: El-Saadony; Mohamed T., Umar, Muhammad, Hassan, Faiz-ul, Alagawany, Mahmoud, Arif, Muhammad, Taha, Ayman E., Elnesr, Shaaban S., El-Tarabily, Khaled A., Abd El-Hack, Mohamed E.
Pages: 136 - 146
Abstract: Due to the increasing demand for antibiotic-free livestock products from the consumer side and the ban on the use of antibiotic growth promoters, the poultry feed industry is increasingly interested in developing more alternatives to cope with this problem. Organic acids (butyric acid) have many beneficial effects on poultry health, performance, and egg quality when used in their diet, thus they can be considered for the replacement of antibiotics in livestock production systems. Butyric acid is most efficacious against pathogenic bacteria such as Salmonella spp. and Escherichia coli, and stimulates the population of beneficial gut bacteria. It is a primary energy source for colonocytes and augments the differentiation and maturation of the intestinal cells. Collectively, butyric acid should be considered as an alternative to antibiotic growth promoters, because it reduces pathogenic bacteria and their toxins, enhancing gut health thereby increasing nutrient digestibility, thus leading to improved growth performance and immunity among birds. The possible pathways and mechanisms through which butyric acid enhances gut health and production performance are discussed in this review. Detailed information about the use of butyric acid in poultry and its possible benefits under different conditions are also provided, and the impacts of butyric acid on egg quality and osteoporosis are noted.
PubDate: 2022-11-14
DOI: 10.1017/S1466252321000220
- Internal reference genes with the potential for normalizing quantitative
PCR results for oral fluid specimens-
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Authors: Cheng; Ting-Yu, Zimmerman, Jeffrey J., Giménez-Lirola, Luis G.
Pages: 147 - 156
Abstract: In basic research, testing of oral fluid specimens by real-time quantitative polymerase chain reaction (qPCR) has been used to evaluate changes in gene expression levels following experimental treatments. In diagnostic medicine, qPCR has been used to detect DNA/RNA transcripts indicative of bacterial or viral infections. Normalization of qPCR using endogenous and exogenous reference genes is a well-established strategy for ensuring result comparability by controlling sample-to-sample variation introduced during sampling, storage, and qPCR testing. In this review, the majority of recent publications in human (n = 136) and veterinary (n = 179) medicine did not describe the use of internal reference genes in qPCRs for oral fluid specimens (52.9% animal studies; 57.0% human studies). However, the use of endogenous reference genes has not been fully explored or validated for oral fluid specimens. The lack of valid internal reference genes inherent to the oral fluid matrix will continue to hamper the reliability, reproducibility, and generalizability of oral fluid qPCR assays until this issue is addressed.
PubDate: 2022-11-04
DOI: 10.1017/S1466252322000044
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