Genetics and breeding: Detection of Putative Loci Affecting Milk, Health, And Type Traits in a US Holstein Population Using 70 Microsatellite Markers in a Genome Scan

摘要

Quantitative trait loci affecting milk yield, health, and type traits were studied for seven large U. S. Holstein grandsire families using the granddaughter design. Sev- enty microsatellite markers located throughout the ge- nome were selected for the quantitative trait loci scan. Effects of marker alleles were analyzed for 30 traits (21 type traits, 5 milk traits, 2 calving ease traits, and somatic cell score and productive life) and 16 canonical traits derived from type and production traits.