Many livestock breeding programs include components of reproduction among their selection criteria (e.g. Turner, 1976); Although the usual aim of selection for reproduction is to improve lifetime performance, in practice, selection decisions tend to be made on reproduction early in life. It is assumed that what happens early in life will generalize to performance over the whole of life. Yet, considerations based on the theory of population genetics and evolution suggest that such an assumption is false and that in most situations selection for components of reproduction will not bring any benefits.

B. G Luxford, R. G Beilharz

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 7. Symposia (1), , 479–482, 1982
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