Validation of markers with non-additive effects on milk yield and fertility in Holstein and Jersey cows.

ABSTRACT:

Background

It has been suggested that traits with low heritability, such as fertility, may have proportionately more genetic variation arising from non-additive effects than traits with higher heritability, such as milk yield. Here, we performed a large genome scan with 408,255 single nucleotide polymorphism (SNP) markers to identify chromosomal regions associated with additive, dominance and epistatic (pairwise additive × additive) variability in milk yield and a measure of fertility, calving interval, using records from a population of 7,055 Holstein cows. The results were subsequently validated in an independent set of 3,795 Jerseys.

Results

We identified genomic regions with validated additive effects on milk yield on Bos taurus autosomes (BTA) 5, 14 and 20, whereas SNPs

SUBMITTER: Aliloo H 

PROVIDER: S-EPMC4509610 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature