Estimation of Genetic Parameters for Reproductive Traits in Hanwoo (Korean Cattle) release_3d5fiyc3jrbwreg6qu3cu6cltm

by Bryan Irvine Lopez, Ju-Hwan Son, Kangseok Seo, Dajeong Lim

Published in Animals by MDPI AG.

2019   Volume 9, Issue 10, p715

Abstract

Genetic parameters for the reproductive traits of Hanwoo cattle were estimated using data obtained from 15,355 cows in 92 herds across South Korea, which were inseminated from May 1997 to July 2016. An "average information" restricted maximum likelihood (REML) procedure that fit in single-trait and multi-trait animal models was used to estimate the variance components of age at first calving (AFC), calving interval (CI), days open (DO), and gestation length (GL). Results showed the low estimates of heritability for all reproductive traits from both single-trait and multi-trait models. Estimates of heritability for AFC were 0.08 and 0.10 with single-trait and multi-trait models, respectively, while the estimates of heritability using the same animal models ranged from 0.01 to 0.07, 0.01 to 0.09, and 0.10 to 0.16 for CI, DO, and GL, accordingly. While AFC showed positive genetic correlations of 0.52 and 0.46 with CI and DO, respectively, the estimates of genetic and phenotypic correlations of GL with AFC were close to zero. Moreover, phenotypic correlations of GL with CI and DO were also close to zero; however, the corresponding genetic correlations were 0.13 and –0.38 for CI and DO, respectively. These estimated variance components and genetic correlations for reproductive traits can be utilized for genetic improvement programs of Hanwoo cattle.
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Type  article-journal
Stage   published
Date   2019-09-24
Language   en ?
DOI  10.3390/ani9100715
PubMed  31554220
PMC  PMC6826551
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