运用贝叶斯方法估计中国美利奴羊(新疆型)毛用性状及繁殖性状的遗传参数  

Estimates of Genetic Parameters for Wool and Reproduction Traits in Chinese Merino Sheep(Xinjiang type)by Bayesian Method

作　　者：魏趁[1,2] 关鸣轩 付雪峰 田月珍[2] 徐新明[2] 哈尼克孜·吐拉甫[2] 黄锡霞[1] 王雅春[3] 田可川[2] 王志明[4] 鲁兰·哈依尔别 WEI Chen;GUAN Mingxuan;FU Xuefeng;TIAN Yuezhen;XU Xinming;HANIKEZI Tulafu;HUANG Xixia;WANG Yachun;TIAN Kechuan;WANG Zhiming;LULAN Hayierbieke(College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China;Institute of Animal Science, Xinjiang Academy of Animal Science, Urumqi 830011, China;China Agricultural University, Beijing 100193, China;Tacheng Area Capricorn Animal Science and Technology Industrial Co. LTD, Emin 834600, China)

机构地区：[1]新疆农业大学动物科学学院,乌鲁木齐830052 [2]新疆畜牧科学院畜牧研究所,乌鲁木齐830011 [3]中国农业大学,北京100193 [4]塔城地区摩羯草畜科技实业有限公司,额敏834600

出　　处：《畜牧兽医学报》2020年第7期1537-1547,共11页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：国家现代农业产业技术体系建设项目(CARS-39);新疆绒毛用羊遗传育种与繁殖自治区重点实验室项目(XIYS1105);自治区研究生科研创新项目(XJ2019G138)。

摘　　要：为了解中国美利奴羊(新疆型)近年来遗传结构的变化趋势以及探讨毛用性状与繁殖性状的遗传关系,需要进一步研究这些性状的遗传力以及它们之间的关系。本研究收集额敏县聚鑫细毛羊养殖专业合作社1985-2018年中国美利奴羊(新疆型)共计9428只羊毛生产记录和1987-2018共计5887只年繁殖记录,运用BLUPF90软件结合Gibbs抽样方法,利用单性状模型对中国美利奴(新疆型)毛用性状(细度支数、等级、总评分、毛长、污毛重和鉴定时体重)和繁殖性状(配种次数、妊娠天数、胎产羔数和总产羔数)进行方差组分和遗传力估计,利用双性状模型分析毛用性状与繁殖性状之间的遗传相关与表型相关。结果显示,中国美利奴羊(新疆型)毛用性状细度支数、等级、总评分、毛长、污毛重、鉴定时体重的遗传力估计值分别为0.471±0.020、0.088±0.030、0.114±0.018、0.426±0.025、0.328±0.041、0.317±0.046;繁殖性状配种次数、妊娠天数、胎产羔数及总产羔数的遗传力估计值分别为0.056±0.009、0.022±0.010、0.120±0.018、0.163±0.016;毛用性状与胎产羔数、总产羔数之间的遗传相关范围为-0.031~0.286,鉴定时体重与胎产羔数(0.286)、总产羔数(0.204)遗传相关最高,细度支数与胎产羔数(-0.143)、总产羔数(-0.048)呈负的遗传相关;毛用性状与胎产羔数、总产羔数之间的表型相关范围为-0.210~0.216,毛长与总产羔数(0.216)表型相关最高,细度支数与胎产羔数(-0.137)、总产羔数(-0.210)呈显著负表型相关。本研究结果发现,毛用性状与繁殖性状之间存在一定的关系,这一结果可为今后制定中国美利奴羊育种规划提供数据基础,为选育优质高产、繁殖性能好的细毛羊提供理论依据,从而进一步提高细毛羊产业经济效益。In order to understand the genetic trends of Chinese Merino sheep(Xinjiang type)in recent years and to explore the genetic relationship between wool and reproductive traits,it is necessary to further study the heritability of these traits and their relationship.The records of wool production performance of 9428 individuals(from 1985 to 2018)and the records of reproduction performance of 5887 individuals(from 1987 to 2018)for Chinese Merino sheep(Xinjiang type)were collected from Juxin fine wool sheep breeding professional cooperative of Emin county.Using a single trait model by BLUPF90 software combined with Gibbs sampling method estimated the variance components and heritabilities for wool(fineness,quality,total fleece grade,staple length,greasy fleece weight and body weight pre-shearing)and reproduction traits(number of inseminations,gestation length,litter size,total number of lambs born),and using two-trait model estimated the genetic correlation and phenotypic correlation between wool and reproductive traits.The results showed that estimates of heritabilities for fineness,quality,total fleece grade,staple length,greasy fleece weight and body weight pre-shearing were 0.471±0.020,0.088±0.030,0.114±0.018,0.426±0.025,0.328±0.041,and 0.317±0.046,respectively;estimates of heritabilies for number of inseminations,gestation length,litter size and total number of lambs born were 0.056±0.009,0.022±0.010,0.120±0.018,and 0.163±0.016,respectively;estimates of genetic correlation between wool traits and litter size,total number of lambs born varied from-0.031 to 0.286,body weight pre-shearing showed the strongest relation to litter size(0.286)followed by total number of lambs born(0.204),fineness were negatively related to litter size(-0.143)and total number of lambs born(-0.048);estimates of phenotypic correlation between wool traits and litter size,total number of lambs born varied from-0.210 to 0.216,staple length showed the strongest relation to total number of lambs born(0.216),fineness were negatively rela

关 键 词：中国美利奴羊(新疆型) 毛用性状 繁殖性状 遗传参数 贝叶斯 

分 类 号：S826.2[农业科学—畜牧学]