根据田间记录估计日本褐牛生长和胴体性状的遗传参数。

Genetic parameters for growth and carcass traits in Japanese brown cattle estimated from field records.

作者信息

Hirooka H, Groen A F, Matsumoto M

机构信息

Department of Animal Breeding, Wageningen Institute of Animal Science, The Netherlands.

出版信息

J Anim Sci. 1996 Sep;74(9):2112-6. doi: 10.2527/1996.7492112x.

DOI:10.2527/1996.7492112x

PMID:8880413

Abstract

Field records from 14,380 Japanese Brown steers by 92 sires were used to estimate genetic parameters for growth and carcass traits. Multipletrait restricted maximum likelihood (REML) procedures accounting for relationships among sires were used in estimating (co)variance components among average daily gain during fattening periods (ADG), carcass weight (CWT), longissimus muscle area (LMA), rib thickness (RT), marbling score (MS), and subcutaneous fat thickness (SFT). Heritability estimates on an age-constant basis were .22, .37, .38, .26, .40, and .35 for ADG, CWT, LMA, RT, MS, and SFT, respectively. Estimated genetic correlations (rg) among ADG, CWT, and RT were positive and moderately high (.48 to .85). The rg between MS and SFT was -.12.

摘要

利用92头种公牛的14380头日本褐牛的田间记录来估计生长和胴体性状的遗传参数。在估计育肥期平均日增重（ADG）、胴体重（CWT）、背最长肌面积（LMA）、肋骨厚度（RT）、大理石花纹评分（MS）和皮下脂肪厚度（SFT）的（协）方差分量时，采用了考虑种公牛间关系的多性状限制最大似然法（REML）。基于年龄恒定的遗传力估计值，ADG、CWT、LMA、RT、MS和SFT分别为0.22、0.37、0.38、0.26、0.40和0.35。ADG、CWT和RT之间的估计遗传相关性（rg）为正且中等偏高（0.48至0.85）。MS和SFT之间的rg为-0.12。