摘要
为了对山西省朔州地区中国荷斯坦青年牛繁殖性状进行遗传参数估计及分析影响繁殖性状的非遗传因素,试验收集了山西朔州地区某奶牛场2016—2021年间1030头中国荷斯坦青年牛产犊和配种记录,包括初配日龄、初产日龄、重复配种次数、首末配种间隔、妊娠天数、56 d不返情率繁殖性状指标数据,以及13个非遗传因素(包括出生年、出生季节、初配月龄、初配年、初配季节、配种员、同胞数、初配是否性控、配孕是否性控、产犊季节、是否早产、妊娠期、产犊月龄)数据,使用SPSS 26.0软件中的GLM程序对影响试验奶牛繁殖性状指标的非遗传因素进行显著性检验,运用DMU软件AI模块中的单性状动物模型对试验奶牛繁殖性状指标进行遗传参数估计,采用DMU软件AI模块中的双性状动物模型分析试验奶牛繁殖性状指标间的遗传相关,采用SPSS 26.0软件中CORR程序分析试验奶牛繁殖性状指标间的表型相关。结果表明:初配月龄和产犊月龄对试验奶牛初配日龄、初产日龄、重复配种次数、首末配种间隔、妊娠天数、56 d不返情率繁殖性状指标均具有极显著影响(P<0.01),出生年、初配年、初配季节、配种员、初配是否性控、产犊季节、是否早产、妊娠期对部分繁殖性状指标具有影响;试验奶牛初配日龄、初产日龄、重复配种次数、首末配种间隔、妊娠天数、56 d不返情率的遗传力分别为0.2037,0.0149,0.3474,0.3383,0.1874,0.2049;试验奶牛的初产日龄与56 d不返情率、重复配种次数呈中等遗传正相关,初配日龄与初产日龄为高遗传正相关(0.9500),且表型呈极显著相关(P<0.01)。说明初配日龄、重复配种次数、首末配种间隔、妊娠天数、56 d不返情率为中高遗传力性状,可以作为朔州地区中国荷斯坦青年牛早期选育性状,并且初产日龄可以通过初配日龄间接选育。
In order to estimate the genetic parameters of reproductive traits of Chinese Holstein heifers in Shuozhou District Shanxi Province and analyze the non-genetic factors affecting the reproductive traits,the calving and mating records(including the age at first service,the age at first calving,the number of services per conception,the interval between first and last service,the gestation length,and the non-return rate within 56 days)and the data of 13 non-genetic factors(including birth year,birth season,first service month age,first service year,first service season,breeder,number of siblings,whether first service sex control,whether service pregnancy sex control,calving season,whether preterm birth,pregnancy length,and calving month age)of 1030 Chinese Holstein heifers from 2016 to 2021 were collected in a dairy farm in Shuozhou District Shanxi Province in this study.The GLM program in SPSS 26.0 software was used to test the significance of non-genetic factors affecting the reproductive traits of experimental dairy heifers.The single trait model in the AI module of DMU(derivative free multivariate)software was used to estimate the genetic parameters of reproductive traits of experimental dairy heifers,and the two traits animal model in the AI module of the DMU software was used to estimate the genetic correlation among the reproductive traits of experimental dairy heifers.The CORR process in SPSS 26.0 software was used to estimate the phenotypic correlation among the reproductive traits of experimental dairy heifers.The results showed that the month age at first service and calving had a extremely significant effect on the reproductive traits(including the age at first service,the age at first calving,the number of services per conception,the interval between first and last service,the gestation length,and the non-return rate within 56 days)of the experimental dairy cows(P<0.01),and the birth year,the first service year,the wether first service season,the breeder,the whether first service sex control,the calving
作者
孟源
呙明鹏
王元
王宏浩
申莉
杨继业
弓瑞娟
魏琳琳
魏江斌
杨琳
王曦
MENG Yuan;GUO Mingpeng;WANG Yuan;WANG Honghao;SHEN Li;YANG Jiye;GONG Ruijuan;WEI Linlin;Wei Jiangbin;YANG Lin;WANG Xi(College of Animal Sciences,Shanxi Agricultural University,Jinzhong 030801,China;College of Life Sciences,Shanxi Agricultural University,Jinzhong 030801,China;Taiyuan Ecological Engineering School,Taiyuan 030025,China;Shanxi Provincial Animal Husbandry Genetic Breeding Center,Taiyuan 030025,China)
出处
《黑龙江畜牧兽医》
CAS
北大核心
2022年第22期58-64,共7页
Heilongjiang Animal Science And veterinary Medicine
基金
农业农村部财政部2021年农业生产发展资金项目(NYSC20210056)
山西省自然科学基金面上项目(201901D111452)
山西省重点研发计划项目(201903D211012)
山西省现代农业牛产业技术体系项目(22-5)
山西农业大学生物育种工程项目(YZGC131)。
关键词
中国荷斯坦青年牛
繁殖性状
非遗传因素
遗传参数
遗传相关
Chinese Holstein heifers
reproductive traits
non-genetic factors
genetic parameters
genetic correlation
