The sensitivity of economic gain to incomplete specification of traits or to incorrect weights in merit relative to true merit is evaluated. Technical (input costs and output prices) and strategic (production and market circumstances, and genetic trait levels) specifications are considered. Merit specification, until more comprehensive functions are developed, should be defined minimally for economic efficiency from milk component yields and length of milking herd life based on non-milk culling.

F. R Allaire, D. S Keller

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XIV. Dairy cattle genetics and breeding, adaptation and conservation., , 217–220, 1990
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