Estimation of genetic parameters of pig reproductive traits

Author:

Yang Yiting,Gan Mailin,Yang Xidi,Zhu Peng,Luo Yi,Liu Bin,Zhu Kangping,Cheng Wenqiang,Chen Lei,Zhao Ye,Niu Lili,Wang Yan,Zhang Hui,Wang Jingyong,Shen Linyuan,Zhu Li

Abstract

IntroductionIn this study, we aimed to estimate the genetic parameters of the reproductive traits in three popular commercial pig breeds: Duroc, Landrace, and Yorkshire. Additionally, we evaluated the factors that influence these traits.MethodWe collected data from a large number of litters, including 1,887 Duroc, 21,787 Landrace, and 74,796 Yorkshire litters. Using the ASReml-R software to analyze 11 traits, which included: total number of pigs born (TNB); number of piglets born alive (NBA); number of piglets born healthy (NBH); number of piglets born weak (NBW); number of new stillborn piglets (NS); number of old stillborn piglets (OS); number of piglets born with malformation (NBM); number of mummified piglets (NM); total litter birthweight (LBW); litter average weight (LAW); duration of gestational period (GP). We investigated the effects of 4 fixed factors on the genetic parameters of these traits.ResultsAmong the 11 reproductive-related traits, the gestational period belonged to the medium heritability traits (0.251–0.430), while remaining traits showed low heritability, ranging from 0.005 to 0.159. TNB, NBA, NBH, LBW had positive genetic correlation (0.737 ~ 0.981) and phenotype correlation (0.711 ~ 0.951). There was a negative genetic correlation between NBW and LAW (−0.452 ~ −0.978) and phenotypic correlation (−0.380 ~ −0.873). LBW was considered one of the most reasonable reproductive traits that could be used for breeding improvement. Repeatability of the three varieties was within the range of 0.000–0.097. In addition, the fixed effect selected in this study had a significant effect on Landrace and Yorkshire (p < 0.05).DiscussionWe found a positive correlation between LBW and TNB, NBA, and NBH, suggesting the potential for multi-trait association breeding. Factors such as farm, farrowing year, breeding season, and parity should be taken into consideration in practical production, as they may impact the reproductive performance of breeding pigs.

Funder

National Key Research and Development Program of China

Publisher

Frontiers Media SA

Subject

General Veterinary

Reference45 articles.

1. Factors for improving reproductive performance of sows and herd productivity in commercial breeding herds;Koketsu;Porc Health Manag,2017

2. Financial impact of average parity of culled females in a breed-to-wean swine operation using replacement gilt net present value analysis[J];Stalder;J Swine Health Prod,2003

3. Evaluation of direct and maternal responses in reproduction traits based on different selection strategies for postnatal piglet survival in a selection experiment[J];Nguyen;Gen Selec Evol,2021

4. Estimation of direct and maternal genetic variance for litter size in Canadian Yorkshire and landrace swine using an animal model;Southwood;J Anim Sci,1990

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3