广东小耳花猪仔猪初生重对其产房死亡率的影响

为研究广东小耳花猪仔猪初生重对哺乳期死亡率的影响,研究对两栋分娩舍内272头广东小耳花猪仔猪的初生重和死亡率进行了统计分析。结果表明:初生重低于等于0.4千克的仔猪死亡率高达81.25%,初生重在0.41耀0.6千克的仔猪死亡率为12%,当仔猪初生重大于0.8千克的时候死亡率仅为3.61%。初生重越大的仔猪,其死亡率呈现降低趋势并走向稳定。仔猪的死亡高峰期为出生后的8天内,64%的仔猪在该时期内死亡。死亡仔猪的主要原因为病弱和压死,两者总共占比为68%。此外,对两栋分娩舍进行对比发现,初生重越大的仔猪,其断奶重也越高。

The Effect of the Birth Weight of Piglets in Guangdong Small-spotted Pig on the Mortality Rate

In order to study the effect of the birth weight of piglets in Guangdong Small-spotted pig on the mortality rate,the birth weight and mortality of 272 piglets in 2 buildings were statistically analyzed.The results show that the mortality rate of piglets with a birth weight of less than 0.4 kg is as high as 81.25%,the mortality rate of piglets with birth weight of 0.41-0.6 kg is 12%,With the birth weight of piglets more than 0.8 kg,the mortality rate is only 3.61%.With the increase of the birth weight,the mortality rate of piglets is decreasing and stabilizing.The peak of piglet death were happened at the 0-8 days after birth,64%of piglets died during this period.The main cause of dead is sickness and crushing,accounting for 68%.In addition,comparing the two parturition pens,it was found that the birth weight increased,and the weaning weight also increased.