影响吐鲁番黑羊初生重的非遗传因素及遗传力估计  

Analysis of Factors Affecting Birth Weight of Turpan Black Sheep and Estimation of Their Heritability

作　　者：白锋 滕文 阿米妮古丽·阿不来孜 玛尔孜娅·亚森 罗春彦 于丽娟[3] 周喜荣[4] 纳扎开提·艾尼万尔 张恺 买斯吐尔古丽·阿布力提甫 张艳花[3] BAI Feng;TENG Wen;AMINIGULI·Abulaizi;MAERZIYA·Yasen;LUO Chunyan;YU Lijuan;ZHOU Xirong;NAZHAKAITI·Ainiwaner;ZHANG Kai;MAISITUERGULI·Abulitifu;ZHANG Yanhua(College of Animal Science,Xinjiang Agricultural University,Urumqi 830052,China;Toksun County Fengcheng State-owned Herding Co.,Ltd,Toksun,Xinjiang 838100,China;Institute of Animal Husbandry,Xinjiang Academy of Animal Science/Key Laboratory of Evaluation and Utilization of Livestock and Poultry Resources(Sheep)of Ministry of Agriculture and Rural Areas/Xinjiang Key Laboratory of Genetic Breeding and Reproduction of Sheep For Wool Production,Urumqi 830026,China;Institute of Livestock Economy and Information,Xinjiang Academy of Animal Science,Urumqi 830026,China)

机构地区：[1]新疆农业大学动物科学学院,乌鲁木齐830052 [2]托克逊县风城国营牧业有限公司,新疆托克逊838100 [3]新疆畜牧科学院畜牧研究所/农业农村部畜禽资源(羊)评价利用重点实验室/新疆绒毛用羊遗传育种与繁殖重点实验室,乌鲁木齐830026 [4]新疆畜牧科学院畜牧业经济与信息研究所,乌鲁木齐830026

出　　处：《草食家畜》2025年第1期1-7,共7页Grass-Feeding Livestock

基　　金：中央引导地方科技发展专项“羊遗传资源评价与利用实验平台建设”(ZYYD2023B10);新疆吐鲁番市重点研发专项“吐鲁番黑羊核心群选育体系建立及优质肉产品开发”(202316);新疆维吾尔自治区产业技术体系项目“新疆牧区地方肉羊选育改良计划”(XJMQ-1)。

摘　　要：【目的】旨在分析影响吐鲁番黑羊初生重的非遗传因素,并估计其遗传力,为吐鲁番黑羊的育种工作提供科学依据。【方法】研究收集了2022—2024年间新疆托克逊县风城国营牧业有限公司吐鲁番黑羊核心群的1296条产羔记录,利用Excel 2021和SAS9.4软件进行数据处理与分析,采用一般线性模型(GLM)评估固定效应的影响,并基于单性状动物模型,运用DMU软件包中的DUMIAI模块,估计遗传参数。【结果】方差分析显示出生年份、月份、性别和胎次对吐鲁番黑羊初生重有极显著影响(P<0.01)。2023年出生的吐鲁番黑羊初生重最大,公羔重于母羔,第三胎初生重最大。遗传力估计表明,直接遗传力为0.017,母体遗传力为0.4。【结论】非遗传因素对吐鲁番黑羊的初生重影响显著,其中年份、性别和胎次对初生重有重要影响。遗传力的估计表明,初生重受母体遗传力影响较大。本研究为吐鲁番黑羊的选育改良提供了科学依据,有助于提高育种效率。[Objective]This study aimed to analyze the non-genetic factors affecting the birth weight of Turpan black sheep and to estimate their heritability,so as to provide a scientific basis for the breeding of Turpan black sheep.[Methods]1296 lambing records originated from core population of the Turpan black sheep in Toksun county fengcheng state-owned herding limited company during 2022 to 2024 were collected.Then data processing and analysis were performed using Excel 2021 and SAS9.4 software,and fixed effects were assessed using the general linear model(CLM),and the DMUAI module in the DMU package was used for estimation of genetic parameters on the basis of the single-trait animal model.[Results]Results of variance analysis showed that birth year,birth month,sex and parity had extremely significant effects on birth weight of Turpan black sheep.The black sheep born in 2023 had the largest birth weight,the male lambs were heavier than the female ones,and the third parity had the highest birth weight.According to the estimation of heritability,the direct heritability was O.017 and the maternal heritability was O.4.[Conclusion]Non-genetic factors had significant effects on the birth weight of Turpan black sheep,among which,the age,sex,and parity were important factors.Estimation of heritability indicated that birth weight was strongly influenced by maternal heritability.A scientific basis was thus provided by the study for breeding improvement of Turpan black sheep and the breeding efficiencywould be improved.

关 键 词：吐鲁番黑羊 非遗传因素 固定效应 遗传力 

分 类 号：S826[农业科学—畜牧学]