胎次、季节对淮南猪繁殖性能的影响

Effect of different parities,seasons on reproductive performance of Huainan pig

为了解不同胎次、季节对淮南猪繁殖性能的影响,对878头淮南猪2131窝的繁殖记录进行统计分析。结果表明:随着母猪胎次的增加,淮南猪的产仔性能呈现先升高再稳定最后降低的趋势。在第4胎时,其总产仔数显著高于第1胎(P<0.05),活仔数和健仔数显著高于第1胎与第7胎及7胎以上的母猪(P<0.05)。在第5胎时,淮南猪的死胎数最多,显著高于1~3胎(P<0.05)。在第6胎时淮南猪的木乃伊胎数最多,显著高于3、4、5、7胎及7胎以上(P<0.05)。在配种季节方面,秋季配种时,其总产仔数、活仔数和健仔数最多,显著高于春季(P<0.05)。在分娩季节方面,冬季分娩时,其总产仔数、活仔数和健仔数最多,显著高于秋季(P<0.05)。研究表明,淮南猪在第2~6胎时繁殖性能较优,并且在秋季适宜配种,冬季适宜分娩。

In order to understand the effects of different parities and seasons on the reproductive performance of Huainan pigs,878 Huainan pigs with a total of 2131 breeding records were statistically analyzed.The results showed that,in terms of the parity,the reproductive performance of Huainan pigs increased first,then stabilized and decreased at last with the increase of parities.In the 4th parity,the total number of born was significantly higher than that of the sows with 1st parity(P<0.05),the number of born alive and healthy piglets was significantly higher than that of sows with 1st,7th and above(P<0.05).The number of stillborn piglets was the highest in the 5th parity,which was significantly higher than that of 1st to 3rd(P<0.05).The number of mummified piglets was the highest in the 6th parity,and significantly higher than 3rd,4th,5th,7th and above(P<0.05).In terms of the mating season,the total number of born,born alive and healthy piglets of Huainan pigs in autumn mating were significantly higher than that in spring(P<0.05).In terms of the delivery season,the total number of born,born alive and healthy piglets of Huainan pigs in winter delivery were significantly higher than that in autumn(P<0.05).To sum up,Huainan pigs had better reproductive performance from parities 2 to 6.The appropriate mating season was autumn,and the appropriate delivery season was winter.