不同月份对母猪产仔及活仔率的影响

Effect of Different Months on Litter Size and Live Piglet Percent of Sows

经11705窝(胎)次母猪各月份产仔和3733窝(胎)次母猪各月活产仔数的数理分析,其产仔数,活产率受不同月份气温、相对湿度等综合生态因子而影响;特别是8月份是母猪全年繁殖力最差的月份,8月份配种11月份产仔数最少,平均窝产13.66头;活产仔也是全年最低,平均12.75头;8月份活仔率87.09％,且一次情期受胎率为83.51％,都是全年最低的。

Litter size and live piglet percent of sows in different months were deduced by an analysis on 11705 litter size records and 3733 records of live piglets per litter respectively, it was showed that litter size and live piglet percent were affected by comprehensive ecological factors including air temperature, and relative humidity in different months ect. Reproductive Performance of sows was the lowest in August of a year. For sows mated in August and farrowed in November, litter size, live piglets per litter, live piglets percent and non-return rate were decreased to the limit of a year, and were 13.66, 12.75, 87.09% and 83.51% respectively.