Effects of including a quantitative trait locus in selection under different waiting plans of young bulls From: Journal of Dairy Science | Date: February 1, 2003| Author: | Copyright American Dairy Science Association Feb 2003. Provided by ProQuest LLC.Copyright information

ABSTRACT

The advantage of using the genotype of a quantitative trait locus (QTL) in selection schemes of dairy cattle was quantified using stochastic simulation. Three selection plans were studied. In the first plan, young bulls waited for 3 yr until their sisters completed a lactation and then were evaluated and selected based on an animal model. In a second plan, young bulls waited for 5 yr until their daughters completed a lactation. An intermediate 4-yr waiting plan was also studied. Simulation was for 16 yr with overlapping generations. Population and model parameters were proportional ...

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