摘要
利用2552胎约克夏母猪的历史繁殖数据,分析背膘厚度与体况评分,分别对初产母猪和经产母猪不同妊娠阶段的背膘厚度与繁殖性状进行相关分析。结果表明,体况评分法并不能准确地评判妊娠母猪背膘厚度,更不能反映母猪繁殖性能的高低。初产母猪不同妊娠期的背膘厚度和主要繁殖性状无显著相关性。经产母猪不同妊娠阶段的背膘厚度与繁殖性状显著相关(P<0.05),妊娠期背膘厚度变化量与繁殖性状显著相关(P<0.05)。回归分析表明,为使经产母猪繁殖性能达到最佳,妊娠期间母猪的背膘厚度应控制在10~14 mm,并且保持相对稳定。在妊娠期不同阶段应根据母猪背膘厚度进行精确饲喂,以确保母猪达到最佳背膘厚度,并在整个妊娠期维持相对稳定,这样有利于母猪繁殖性能的提高。
Historical reproductive data of 2552 Yorkshire sows were used to analyze the relationship between backfat thickness and body condition score and main reproductive traits and correlation analysis was carried out on the thickness and reproductive traits of primiparous sows and sows at different stages of pregnancy.The results showed that the body condition scoring method could not accurately judge the backfat thickness and reproductive performance of sows.There was no significant correlation between the backfat thickness and the main reproductive traits at different gestation stages of primiparous sows.The backfat thickness in different stages of multiparous sows was significantly(P<0.05)correlated with reproductive traits.The variation of backfat thickness during pregnancy was significantly(P<0.05)correlated with reproductive traits.According to the regression analysis,in order to optimize the reproductive performance of the sows,the backfat thickness of sows during pregnancy should be controlled within the range of 10-14 mm,and kept stable during gestation period.Precise feeding should be carried out according to the thickness of the sow s backfat at different stages of pregnancy to ensure that the sows could reach the optimal backfat thickness range and maintain relatively stable throughout the pregnancy,and it will be helpful to improve the reproductive performance of sows.
作者
刘彬
陈映
蒋小兵
郭芝忺
何志平
钟志君
张顺华
朱砺
LIU Bin;CHEN Ying;JIANG Xiaobing;GUO Zhixian;HE Zhiping;ZHONG Zhijun;ZHANG Shunhua;ZHU Li(Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province,College of Animal Science and Technology,Sichuan Agricultural University,Chengdu 611130,China;Sichuan Meishan Wanjiahao Breeding Pig Breeding Co.,Ltd.,Meishan 620039,China;Sichuan Academy of Animal Science,Chengdu 610066,China)
出处
《浙江农业学报》
CSCD
北大核心
2020年第3期390-397,共8页
Acta Agriculturae Zhejiangensis
基金
国家重点研发计划(2018YFD0501004)
农业农村部农业重大技术协同推广计划试点项目
四川省科技支撑计划(2016NYZ0050)
国家现代农业产业技术体系四川生猪创新团队项目(scsztd-3-008)。
关键词
约克夏
妊娠母猪
初产母猪
经产母猪
背膘厚度
体况评分
繁殖性能
Yorkshire
pregnant sow
primiparous sows
multiparous sows
backfat thickness
body condition score
reproductive performance
