母猪前2胎产仔性能对后续繁殖性能的影响

摘要

The One-Way ANOVA of SPSS 19.0 software was used to analyze the continuous delivery of 6 parities of 5 175 Landrace-Yorkshire hybrid sows for studying the effect of litter size in parity 1 and 2 on consecutive reproductive performance. This study results had the following: first of all, the reproductive performance of the first 2 litters of sows was the worst in the first 6 litters, among which the litter size and the litter of qualified piglets in parity 2 was respectively 11.56 and 10.22. Secondly, the reproductive performance in parity 3 to 6 could be significantly improved with the increase of litter size in parity 1 and 2. Thirdly, if the litter size in first 2 parities was lower than 10, the reproductive performance in parity 3 to 6 would be less than 12. Compared with other sows in first 2 parities, the output in consecutive 4 parities was significantlyless than 0.6 heads or more (P<0.01). Comprehensive above, the reproductive performance in parity 1 and 2 is one of the measurements to estimate sow fertility.%以连续分娩6胎的长大二元杂种母猪为研究对象，应用SPSS 19.0软件的单因素方差分析对5175头母猪的前6胎产仔数据进行分析，以探讨母猪前2胎生产性能与后续胎龄繁殖性能的关系。研究结果表明，母猪前2胎繁殖成绩均相对较低，其中第2胎母猪窝产仔数为11.56头，窝产健仔数为10.22头，为前6胎中最差的；但随着母猪前2胎产仔性能的提高，后续4胎的繁殖成绩也能够极显著提高。然而，当前2胎窝产仔数均低于10头时，其后续4胎的平均窝产仔数仅在12头以下，相比同阶段其他母猪低了0.6头以上（P＜0.01）。综上，母猪前2胎产仔性能可以作为评价母猪繁殖力的重要依据。