江苏某规模猪场母猪窝均产仔数与胎次关系及仔猪断奶前死亡情况调查

Investigation on the Relationship Between Average Litter Birth and Parity of Sows and the Mortality of Piglets Before Weaning in a Largescale Pig Farm in Jiangsu Province

为探究母猪窝产仔数与胎次关系及降低断奶前仔猪死亡率,对江苏某规模猪场2020年2—5月分娩母猪的胎次结构、产仔情况和断奶前仔猪的死亡情况进行初步统计分析。结果表明,疾病引起的仔猪死亡数占总死亡数的21.5%,管理不善引起的仔猪死亡数占9.87%,断奶前仔猪死亡率随胎次增加呈上升趋势,第3胎次仔猪与第6、7和8胎次仔猪的死亡率差异显著(P<0.05),与其他胎次的差异不显著(P>0.05)。

In addition to disease,management factors,birth weight,ambient temperature,and parity are also important factors affecting the mortality of piglets before weaning.An investigation on piglet deaths in a large-scale pig farm in Jiangsu Province in 2020 showed that 9.87%of the total deaths were caused by management factors,and 21.5%were caused by diseases.The survival rate of piglets before weaning decreased with the increase of parities.The mortality rate of piglets born at 3 parities was significantly different from that of piglets born at 6,7 and 8 parities(P<0.05),but was not significantly different from that of piglets born at other parities(P>0.05).