Analysis and Utilization of Straw-preserved Frozen Semen from Native and Imported Pig Breeds in Guizhou Province  

作　　者：Min YAO Qingmeng LONG Ping LI Qixin YANG Bing TIAN Jinrong SHEN Mingzong TANG Fei GONG Jin ZENG Junwei ZHANG Yunsong ZHANG Qingfu ZHAO 

机构地区：[1]Guizhou Testing Center for Livestock and Poultry Germplasm,Guiyang 550018,China [2]Guizhou Province Management Station of Livestock Genetic Resources,Guiyang 550001,China [3]Guizhou Wucui Mingxiang Agricultural Development Co.,Ltd.,Bijie 553300,China

出　　处：《Agricultural Biotechnology》2024年第6期17-21,共5页农业生物技术(英文版)

基　　金：Supported by Guizhou Provincial Department of Agriculture and Rural Affairs Project(QNYZZZ[2017]No.12,GZSZCYJSTX-04);2024 Quality Supervision and Sampling Project of Normal Temperature Semen for Breeding Pigs.

摘　　要：[Objectives]Straw-preserved frozen semen from native and imported pig breeds and its conception performance were studied to provide a scientific basis for further optimizing pig breeding strategy.[Methods]This study was conducted to systematically evaluate straw-preserved frozen semen produced by the Guizhou Testing Center for Livestock and Poultry Germplasm from 2018 to 2023.We analyzed 206 samples from native Guizhou pig breeds,including Kele,Zongdi Hua,and Nuogu pigs,as well as 363 samples from imported and bred pig breeds,such as Duroc,Large Yorkshire,Landrace,Topigs,and French Yorkshire,among others.Additionally,we assessed the conception performance of more than 300 heads across 10 batches,comprising both native and imported and bred pig breeds,following deep insemination.[Results]Significant differences were identified in sperm motility and abnormal sperm percentage(ABSP)among native breeds(P<0.05),as well as in number of progressively motile sperm(NPMS)and ABSP among imported and bred breeds(P<0.05).The average semen dose for both native and imported/bred pigs was 0.47 ml,with a standard deviation of 0.01 ml.Sperm motility ranged from 41.5%to 58%in native breeds and 50.4%to 61.7%in imported and bred breeds.The NPMS ranged from 144 to 177 million in native breeds and 149 to 177 million in imported and bred breeds.ABSPs remained within acceptable limits,ranging from 6.6%to 16.8%for native breeds and 6.1%to 18.1%for imported and bred breeds.The imported and bred pigs outperformed the native breeds in terms of sperm motility(50.42%to 69.58%vs.41.63%to 48.37%),farrowing rate(71.13%to 86.70%vs.57.15%to 74.35%),and litter size(7.74 to 10.30 vs.6.39 to 7.45).[Conclusions]These findings suggest that long-term selective breeding and domestication of native Guizhou pigs are necessary to enhance their reproductive performance.

关 键 词：Pig frozen semen Sperm motility Number of progressively motile sperm(NPMS) Abnormal sperm percentage(ABSP) Conception rate 

分 类 号：S82[农业科学—畜牧学]