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Title: Herd-specific random regression carcass profiles for beef cattle after adjustment for animal genetic merit
Contributor(s): Englishby, Tanya M (author); Moore, Kirsty L  (author)orcid ; Berry, Donagh P (author); Coffey, Mike P (author); Banos, Georgios (author)
Publication Date: 2017-07
Early Online Version: 2017-03-07
DOI: 10.1016/j.meatsci.2017.03.005
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Abattoir data are an important source of information for the genetic evaluation of carcass traits, but also for onfarm management purposes. The present study aimed to quantify the contribution of herd environment to beef carcass characteristics (weight, conformation score and fat score) with particular emphasis on generating finishing herd-specific profiles for these traits across different ages at slaughter. Abattoir records from 46,115 heifers and 78,790 steers aged between 360 and 900 days, and from 22,971 young bulls aged between 360 and 720 days, were analysed. Finishing herd-year and animal genetic (co)variance components for each trait were estimated using random regression models. Across slaughter age and gender, the ratio of finishing herd-year to total phenotypic variance ranged from 0.31 to 0.72 for carcass weight, 0.21 to 0.57 for carcass conformation and 0.11 to 0.44 for carcass fat score. These parameters indicate that the finishing herd environment is an important contributor to carcass trait variability and amenable to improvement with management practices.

Publication Type: Journal Article
Source of Publication: Meat Science, v.129, p. 188-196
Publisher: Elsevier BV
Place of Publication: The Netherlands
ISSN: 1873-4138
Fields of Research (FoR) 2020: 300305 Animal reproduction and breeding
Socio-Economic Objective (SEO) 2020: 100401 Beef cattle
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Animal Genetics and Breeding Unit (AGBU)
Journal Article

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