دورية أكاديمية
أعرض في EDS

Associations between immune competence phenotype and feedlot health and productivity in Angus cattle.

التفاصيل البيبلوغرافية
العنوان: Associations between immune competence phenotype and feedlot health and productivity in Angus cattle.
المؤلفون: Hine BC; F.D. McMaster Laboratory, Agriculture and Food, CSIRO, Armidale, NSW, Australia., Bell AM; F.D. McMaster Laboratory, Agriculture and Food, CSIRO, Armidale, NSW, Australia., Niemeyer DDO; F.D. McMaster Laboratory, Agriculture and Food, CSIRO, Armidale, NSW, Australia., Duff CJ; Angus Australia, Armidale, NSW, Australia., Butcher NM; Angus Australia, Armidale, NSW, Australia., Dominik S; F.D. McMaster Laboratory, Agriculture and Food, CSIRO, Armidale, NSW, Australia., Porto-Neto LR; Queensland Bioscience Precinct, Agriculture and Food, CSIRO, St Lucia, QLD, Australia., Li Y; Queensland Bioscience Precinct, Agriculture and Food, CSIRO, St Lucia, QLD, Australia., Reverter A; Queensland Bioscience Precinct, Agriculture and Food, CSIRO, St Lucia, QLD, Australia., Ingham AB; Queensland Bioscience Precinct, Agriculture and Food, CSIRO, St Lucia, QLD, Australia., Colditz IG; F.D. McMaster Laboratory, Agriculture and Food, CSIRO, Armidale, NSW, Australia.
المصدر: Journal of animal science [J Anim Sci] 2021 Feb 01; Vol. 99 (2).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: American Society of Animal Science Country of Publication: United States NLM ID: 8003002 Publication Model: Print Cited Medium: Internet ISSN: 1525-3163 (Electronic) Linking ISSN: 00218812 NLM ISO Abbreviation: J Anim Sci Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Champaign, IL : American Society of Animal Science
مواضيع طبية MeSH: Animal Feed*/analysis , Diet*, Animals ; Cattle ; Phenotype ; Weaning
مستخلص: Genetic strategies aimed at improving general immune competence (IC) have the potential to reduce the incidence and severity of disease in beef production systems, with resulting benefits of improved animal health and welfare and reduced reliance on antibiotics to prevent and treat disease. Implementation of such strategies first requires that methodologies be developed to phenotype animals for IC and demonstration that these phenotypes are associated with health outcomes. We have developed a methodology to identify IC phenotypes in beef steers during the yard weaning period, which is both practical to apply on-farm and does not restrict the future sale of tested animals. In the current study, a total of 838 Angus steers, previously IC phenotyped at weaning, were categorized as low (n = 98), average (n = 653), or high (n = 88) for the IC phenotype. Detailed health and productivity data were collected on all steers during feedlot finishing, and associations between IC phenotype, health outcomes, and productivity were investigated. A favorable association between IC phenotype and number of mortalities during feedlot finishing was observed with higher mortalities recorded in low IC steers (6.1%) as compared with average (1.2%, P < 0.001) or high (0%, P = 0.018) IC steers. Disease incidence was numerically highest in low IC steers (15.3 cases/100 animals) and similar in average IC steers (10.1 cases/100 animals) and high IC steers (10.2 cases/100 animals); however, differences between groups were not significant. No significant influence of IC phenotype on average daily gain was observed, suggesting that selection for improved IC is unlikely to incur a significant penalty to production. The potential economic benefits of selecting for IC in the feedlot production environment were calculated. Health-associated costs were calculated as the sum of lost production costs, lost capital investment costs, and disease treatment costs. Based on these calculations, health-associated costs were estimated at AUS$103/head in low IC steers, AUS$25/head in average IC steers, and AUS$4/head in high IC steers, respectively. These findings suggest that selection for IC has the potential to reduce mortalities during feedlot finishing and, as a consequence, improve the health and welfare of cattle in the feedlot production environment and reduce health-associated costs incurred by feedlot operators.
(© The Author(s) 2021. Published by Oxford University Press on behalf of the American Society of Animal Science. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
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فهرسة مساهمة: Keywords: Angus; beef; feedlot; health; immune competence; productivity
تواريخ الأحداث: Date Created: 20210121 Date Completed: 20210224 Latest Revision: 20220122
رمز التحديث: 20221213
مُعرف محوري في PubMed: PMC7901007
DOI: 10.1093/jas/skab016
PMID: 33476384
قاعدة البيانات: MEDLINE
الوصف
تدمد:1525-3163
DOI:10.1093/jas/skab016