Effects of back fat, growth rate, and age at first mating on Yorkshire and Landrace sow longevity in China
Effects of back fat, growth rate, and age at first mating on Yorkshire and Landrace sow longevity in China
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DOI：
10.1016/s2095-3119(16)61381-3
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发表时间：
2016-01-01
影响因子：
4.8
通讯作者：
Chen Yao-sheng
中科院分区：
文献类型：
--
作者：
Hu Bin;Mo De-lin;Chen Yao-sheng
本研究对来自同一育种系统的12个猪场的19300头约克郡和18378头长白猪的寿命遗传参数及其与背膘厚、平均日增重和首次交配日龄的遗传相关进行了估计。用一般线性模型（GLM）估计遗传相关和遗传力（h（2））。寿命由六个不同的参数定义（即，性状的遗传力为h（2）= 0.13 ~ 0.16（P
In the present study, genetic parameters for longevity and genetic correlations with back fat (BF), average daily gain (ADG), and first mating age (FMA) were estimated from 19 300 Yorkshire and 18 378 Landrace sows from 12 farms derived from one breeding system. General linear models (GLM) were employed to estimate genetic correlations with heritability (h(2)). Longevity was defined by six different parameters (i.e., traits) and heritability ranged from h(2) = 0.13 to 0.16 (P