Abstract

A Maximum-Likelihood method is presented to estimate gene effects in a design where only extreme animals are genotyped. This method was applied to estimate the effects of caseins and piactoglobulin on production traits in the bovine Montbtiliarde breed. Out of 3,451 candidates, 505 cows selected within sire on protein content were genotyped. Protein content was found to be affected by the a sj-Cn and (3-Cn loci, and fat content by p-Lg. However, this study did not confirm any effect of the K-Cn locus on protein content or protein yield.
 

Didier Boichard, F. Grosclaude, Pascale Le Roy

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 19. Selection and quantitative genetics; growth; reproduction; lactation; fish; fiber; meat., , 303–306, 1994
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