Short Communication: Quantitative Trait Loci Analysis on 17 Nonproduction Traits in the New Zealand Dairy Population

Abstract

Seven New Zealand Holstein-Friesian families and two Jersey families, a total of 274 sires, were analyzed in a granddaughter design for marker-quantitative trait loci associations. For 17 nonproduction traits (management, size, and conformation traits), an across-family analysis was undertaken using multimarker regression procedures. Threshold levels were set empirically by permuting the data. A quantitative trait locus for stature was identified on chromosome 14, which was significant at the 15% experimentwise level (suggestive linkage). The quantitative trait locus was identified to be segregating in three of the nine families.

Genetic analysis and evaluation of behavioural traits in cattle

“…This topic was also addressed by authors investigating the genetic determinants of production traits in dairy cattle and their milking temperament (Spelman et al, 1999;Schrooten et al, 2000;Hiendleder et al, 2003).…”

Genome-wide association study for birth weight in Nellore cattle points to previously described orthologous genes affecting human and bovine height

“…[12-16]). The release of the reference bovine genome [17], the discovery of common single nucleotide polymorphisms (SNPs) across breeds [18,19], and the availability of high-throughput microarrays have enhanced the process of mapping loci that affect complex traits.…”

Selection for pure- and crossbred performance in Charolais

“…The suggestive SNP BTA 83158 no rs and BTB 00798805 were associated with aggressiveness during gestation and were at 6.5 and 7.3 Mbp from markers reported to be associated with vocalization during social separation and fearfulness behavior (Gutierrez Gil et al, 2008). No other confirmation was found for significant or suggestive results for behavior from the current study and other QTL mapping studies on behavior in beef cattle (Schmutz et al, 2001;Esmailizadeh et al, 2008), nor QTL mapping studies on temperament during milking in dairy cattle (Spelman et al 1999;Schrooten et al 2000;Hiendleder et al 2003). The SNP ARS BFGL NGS 40212 significantly associated with maternal care was located on chromosome X.…”

“…To our knowledge, the present study is the first GWAS for type traits in beef cattle. No SNP identified in the present study were close to QTL reported for type traits in dairy cattle (Spelman et al, 1999;Schrooten et al, 2000;Hiendleder et al, 2003;Ashwell et al, 2005). One reason might be that QTL for type traits segregating in Holstein differ from those segregating in Charolais Wientjes et al, 2015).…”