Approximating the selection process.
D000704:Analysis of Variance; D000818:Animals; D000829:Animals, Domestic; D001699:Biometry; D002417:Cattle; D005260:Female; D005838:Genotype; D005854:Germ Cells; D007774:Lactation; D008297:Male; D008892:Milk / Q000378:metabolism; D008962:Models, Theoretical; D012641:Selection, Genetic