Optimising selection on growth and carcase development trajectories in lamb

Title
Optimising selection on growth and carcase development trajectories in lamb
Publication Date
2005
Author(s)
Fischer, Troy
Van Der Werf, Julius Herman
( author )
OrcID: https://orcid.org/0000-0003-2512-1696
Email: jvanderw@une.edu.au
UNE Id une-id:jvanderw
Editor
Editor(s): AAABG: Association for the Advancement of Animal Breeding and Genetics
Type of document
Conference Publication
Language
en
Entity Type
Publication
Place of publication
Collingwood, Australia
UNE publication id
une:4630
Abstract
Net benefit of response to selection for weight, fat and eye muscle depth measured at different ages was optimized for lamb production systems. Optimised selection response and profit were compared for an index based on random regression coefficients relating to the whole growth trajectory and an index based on breeding value for weight, fat and muscle at 200 days. Three different price structures were considered with various premiums for fat and muscle. No significant additional benefit was gained from using random regression breeding value over selection for traits at 200 days of age for a terminal sire breeding objective. However more additional benefit might be expected for a case where maternal performance is considered in the objective or when feed costs are high.
Link
Citation
Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.16, p. 196-199
ISSN
1328-3227
ISBN
064309234X
0643092331
Start page
196
End page
199

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