Article
Modeling nuisance variables for prediction of service sire fertility.
Journal of dairy science - 1 Jul 2008
Kuhn M T, Hutchison J L, Norman H D
Abstract excerpt
The purpose of this research was to determine which (available) nuisance variables should be included in a model for phenotypic evaluation of US service sire conception rate (CR), based on field data. Alternative models were compared by splitting data into records for estimation and set-aside records, computing predictions using the estimation data, and then comparing predictions to bulls' average CR in the...
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