摘要
为了研究胎次和分娩季节对大白母猪繁殖性能的影响,试验选取1~9胎共11 373头大白母猪46 533窝的生产资料,分别分析了不同分娩胎次和季节对大白母猪总产仔数、活仔数、健仔数等繁殖性状的影响。结果表明,分娩胎次及季节对大白母猪繁殖性能均有显著影响(P<0.05);母猪总产仔数、活仔数和健仔数在1~3胎均呈现递增趋势,到第3胎最高,分别增加了0.56、0.58和0.74头;第3胎后,产仔性能呈逐步降低的趋势,至第9胎最低,分别降低了1.07、1.43和1.35头;第1胎的弱仔数和畸形数最高,第8胎的死胎数最高,而木乃伊数最低;在春季分娩的母猪总产仔数,活仔数和健仔数显著高于夏季和冬季(P<0.05),冬季分娩的母猪弱仔数最多(P<0.05),而冬季分娩的死胎数则最低。研究认为,大白母猪的最佳分娩胎次为第2~6胎,适宜的分娩季节为春季和夏季。
The aim of this study was to analyze the effect of parities and delivery seasons for the reproductive performance of Yorkshire Sows.A total of 46533 reproductive records of Yorkshire sows from an Anhui farm were used in this study.All sows were housed according to the same feeding standard.Effects of parities and delivery seasons to the reproductive performance including total litter size,number of live pigs,number of litters,number of stillbirths,number of mummies were tested.The data showed that the parity and delivery seasons all have significant effect on the reproductive performance of Yorkshire sows(P<0.05).The total litter size,number of live pigs and healthy litters of the 3 rd parity was significantly increased by 0.56,0.58 and 0.74 respectively comparing with the first parity.However,after the third parity,these reproductive performance was reduced by 1.07,1.43 and 1.35 respectively from the third parity to the ninth parity.The number of weak litters and deformity pigs were the highest in the first parity,and the number of mummy was the lowest;The number of live litters,live births,and litter size of sows in spring were significantly higher than those of summer and winter(P<0.05),The number of weak litters born in winter was significantly higher than that in autumn,spring and summer,and the number of stillbirth litters born in winter was significantly lower than that in autumn,spring and summer(P<0.05).The results demonstrated that the appropriate delivery parity of Yorkshire sows were the 2 nd to 6 th parity,and the appropriate delivery season for pigs were spring and summer.
出处
《家畜生态学报》
北大核心
2018年第1期50-53,共4页
Journal of Domestic Animal Ecology
基金
国家自然科学基金青年基金(31601912)
广东省科技计划项目(2013B070702003)
广东省应用型科技研发专项资金项目(2015B020231010)
广东省自然科学基金(2016A030310447)
关键词
大白母猪
胎次
分娩季节
繁殖性能
Yorkshire sows
parity
delivery season
reproductive performance
作者简介
耿情（1994-）,女,河北保定人,本科生,主要从事动物遗传育种研究.E-mail2826786043@qq.com;杨杰（1987-）,男,湖南常德人,助理研究员,博士,主要从事动物遗传育种研究.E-mailjieyang2012@hotmail.com;郑恩琴（1981-）,女,广东博罗人,畜牧师,硕士,主要从事动物遗传育种研究.E-maileqzheng@scau.edu.com
