不同胎次、配种季节对母猪繁殖性能的影响

Effect of different parity and breeding season on reproductive performance of sows

目的:探究胎次、配种季节对长大二元杂种母猪繁殖性能的影响。方法:根据福建省某猪场长大二元杂种母猪1年的繁殖记录,分析探讨长大二元杂种母猪窝产总仔数、健仔数、弱仔数、死胎数以及怀孕天数是否受胎次、季节等因素的影响。结果表明:随着胎次的增加,长大二元杂种母猪窝总产仔数在第3~5胎次之间呈增长趋势,而后逐渐下降,窝产健仔数在第2~5胎次间逐步增加,第6胎次后逐渐下降,故母猪整体繁殖性能在第2~5胎次间成绩较好;长大二元杂种母猪在秋季进行配种的繁殖成绩比其它三个季节好,且夏季配种对猪场经济效益影响较大。因此,胎次和季节对长大二元杂种母猪的繁殖性能有较大的影响。

(Objective)To explore the effects of parity and breeding season on the reproductive performance of Landrace×Yorkshire hybird(LY)sows.Methods:Based on the 1-year reproductive records of sows(LY)in a pig farm in Fujian Province,this paper discusses the effect of sows(LY)total litter size,healthy litters,weak litters,stillbirths,and days of pregnancy by parity and season.The results showed that with the increase of parity,the total litter size of sows(LY)showed an increasing trend between the 3rd and 5th parity,and then gradually decreased,the number of healthy litters in sows(LY)that grew up gradually increased between the 2nd and 5th parity,and gradually decreased after the 6th parity,so the overall reproduce performance of sows(LY)is better in the 2nd and 5th parity;the breeding performance of sows(LY)in autumn is better than the other three seasons,and summer breeding has a greater impact on the economic benefits of pig farms.Therefore,parity and season have a greater impact on the reproductive performance of sows(LY).