胎次和分娩季节对长白×陆川母猪繁殖性能的影响

Effects of Parity and Farrowing Season on Reproductive Performance of Landrace×Luchuan Sows

为分析长白×陆川母猪杂交模式下胎次及分娩季节对陆川母猪繁殖性能的影响,以华南地区某猪场834窝长白×陆川母猪繁殖模式的产仔性能数据进行分析。结果表明:陆川母猪第1胎产仔数最低,2~6胎龄繁殖性能稳定,第8胎龄繁殖性能达到高峰,从第9胎龄繁殖性能开始有下降趋势,畸形数、死胎数和木乃伊数明显增加。陆川母猪的总产仔数、产活仔数在不同季节间差异不显著,但夏季处于较高水平,其次是秋季、冬季和春季,可能与陆川猪在华南区域特殊的适应性有关。

In order to explore the reasonable parity structure and seasonal effects on reproductive performance of Luchuan sows,this study analyzed the reproduction performance of 834 litters of Landrace×Luchuan sows from a pig farm in southern China.The results showed that the litter size of Luchuan primiparous sows was the lowest,the reproductive performance of 2 nd^6 th parity was stable,and the reproduction performance was highest at 8th parity,the reproduction performance began to decline from the 9th parity,the number of malformations,stillbirths and mummified fetus had increased obviously.The total litter size and litter size alive of Luchuan sows were not significantly different in different seasons,but they were highest in summer,followed by autumn,winter and spring.This result may be related to the adaptability of Luchuan sow in southern China.