草食家畜Issue(1)：1-7,7.DOI:10.16863/j.cnki.1003-6377.2025.01.001
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
摘要
Abstract
[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]1 296 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(GLM),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 0.017 and the maternal heritability was 0.4.[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 efficiency would be improved.关键词
吐鲁番黑羊/非遗传因素/固定效应/遗传力Key words
Turpan black sheep/non-genetic factor/fixed effect/heritability分类
农业科技引用本文复制引用
白锋,买斯吐尔古丽·阿布力提甫,张艳花,滕文,阿米妮古丽·阿不来孜,玛尔孜娅·亚森,罗春彦,于丽娟,周喜荣,纳扎开提·艾尼万尔,张恺..影响吐鲁番黑羊初生重的非遗传因素及遗传力估计[J].草食家畜,2025,(1):1-7,7.基金项目
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) （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) （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) （XJMQ-1）
