太湖猪高产综合技术研究试验

Study on Techniques for Improving the Reproductivity of Tai Hu Pigs

本文系对103头360窝太湖猪的繁殖性能进行系统研究。结果是60头母猪在6个繁殖周期中共繁殖360窝,平均繁殖周期158.33天,年产仔2.31胎。窝产仔16.35头,活仔15.10头,35日龄断奶育成14.44头,窝重83.48公斤。每头母猪年产仔37.69头,年产活仔34.81头,年提供断奶仔猪33.29头。其中窝产仔达到18头以上,出现1胎或连续4胎高产的母猪69头,占试验母猪群66.99％。

103 heads (360 farrows) of Tai Hu pigs was studied. The result shows that 360 farrows was reproduced by 60 sows during 6 reproductive cycles. The reproductive cycle is 158.33 day averagely. 2.31 litters were farrowed per sow each year. The litter size is 16.35. The piglets born alive are 15.10 per litter. The weanling pig is 14.44 at the age of 35 day. The weaning weight of litter is 83.48 kilogram. 37.69 piglets were reproduced per sow per annum.34.81 piglets were born alive per sow per annum. The weanling pig was 33.29 per sow per annum. The 69 sows whose litter size reached 18 or more occurred in one farrow or during 4 continuous farrowings take the 66.99 percentage of whole experimental sows.