Article
Genetic evaluation of fertility traits of dairy cattle using a multiple-trait animal model.
Journal of dairy science - 1 Nov 2008
Liu Z, Jaitner J, Reinhardt F, Pasman E, Rensing S, Reents R
Abstract excerpt
A genetic evaluation system was developed for 5 fertility traits of dairy cattle: interval from first to successful insemination and nonreturn rate to 56 d of heifers, and interval from calving to first insemination, nonreturn rate to 56 d, and interval first to successful insemination of cows. Using the 2 interval traits of cows as components, breeding values for days open were derived. A multiple-trait animal...
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