华南农业大学学报2017，Vol.38Issue(1)：1-4,4.DOI:10.7671/j.issn.1001-411X.2017.01.001
大白猪主要生长性状的遗传参数估计及育种中存在问题的探讨
Estimation of genetic parameters of major growth traits and existing problems in breeding of Large White pigs
摘要
Abstract
Objective] To estimate genetic parameters of growth traits of Large White pigs in Wens Group, and study the effects of change in method for measuring backfat ( A to B ultrasonic) and variation in final body mass ( age at 100 kg to age at 115 kg body mass) on pig breeding.[Method]Single/multi-trait animal model and DMU software were used to estimate genetic variance and variance of common litter effects for age at 100 kg body mass ( AGE) and backfat thickness at 100 kg body mass ( BF) . We evalu-ated the pearson and spearman correlations between estimated breeding value ( EBV) from newly meas-ured individuals in 2016 and EBV from normal genetic evaluation under the condition of 100 kg final body mass (AGE-100) or B ultrasonic (BF-B). [Result]The estimates of heritabilities were 0. 21 and 0. 41, the common litter effects were 0. 27 and 0. 15 for AGE and BF respectively, and the single-model and multi-model were generally consistent. Under the condition of AGE-100 or BF-B, the pearson correlations were 0. 96 and 0. 94 , the spearman correlations were 0. 96 and 0. 92 for EBV from newly measured indi-viduals and EBV from normal genetic evaluation respectively, and the single-model and multi-model were generally consistent.[Conclusion]Change in method for measuring backfat has a smaller effect on breed-ing than compared change in final body mass. The correction formula should be re-selected.关键词
猪/生长性状/遗传参数/相关分析/育种Key words
pig/growth trait/genetic parameter/correlation analysis/breeding分类
农业科技引用本文复制引用
叶健,吴珍芳,胡晓湘,边成,曾谨勇,张承华,郑恩琴,蔡更元,刘德武,王爱国..大白猪主要生长性状的遗传参数估计及育种中存在问题的探讨[J].华南农业大学学报,2017,38(1):1-4,4.基金项目
广东省科技计划项目(2015B020231010) （2015B020231010）
广东省现代农业产业技术体系生猪创新团队(2016LM1101,2016LM1104) （2016LM1101,2016LM1104）
