有效乳头数对母猪第一胎繁殖性能的影响

The Effect of the Effective Nipple Number on the Reproductive Performance of First Litter

以纯种大白、长大二杂母猪为研究对象,应用SPSS 19.0软件的单因素方差分析对8 778头母猪的有效乳头数进行分析,以探讨有效乳头数与第一胎繁殖性能之间的关系。研究结果表明,无论是纯种大白还是长大二杂母猪,胎均总仔随着其有效乳头数的增加而极显著提高,大部分生产单位胎均健仔有上升趋势。其中,15个以上(含15个)有效乳头数的大白母猪胎均总仔可达14.08头(P<0.01);15个以上(含15个)有效乳头数的长大二杂母猪胎均总仔为12.69头(P<0.01)。综合以上,母猪有效乳头数可以作为评价母猪繁殖力的重要依据。

The One-Way ANOVA of SPSS 19.0 software was used to analyze the effective nipple number from8 778 Yorkshire and Landrace-Yorkshire hybrid sows for studying the relationship of effective nipple and first litter sows reproductive. This study results had the following： First of all, the litter size of Yorkshire and Landrace-Yorkshire hybrid sows in first litter were all significantly rose with the effective nipple increased. Secondly, almost all of the qualified piglets in first litters had the trend of escalation with the effective nipple increased.Thirdly, when the effective nipple was more than 14, the litter size of Yorkshire and Landrace-Yorkshire hybrid sows were upped to 14.08（P〈0.01） and 12.69（P〈0.01）, respectively. Comprehensive above, the effective nipple number could be used as an important basis for evaluation of the fertility of sows.