规模化猪场二元杂交母猪繁殖性能分析

Analysis of Reproductive Performance of Binary Hybrid Sows in Large-scale Pig Farms

规模化猪场二元母猪繁殖率高低是影响商品场生产效率的重要前提因素,为分析影响二元杂交母猪繁殖性能的因素,以某规模化猪场2023年二元杂交母猪全年繁殖生产记录数据为依据,从年龄(胎次)和繁殖季节2个方面进行整理分析,旨在掌握影响二元杂交母猪繁殖的重要因素,为商品场二元母猪的科学管理提供依据。结果显示,母猪产仔性能中胎次对其影响差异极显著(P<0.01),在第3~6胎时呈上升趋势,第4胎时产仔性能最佳,第7胎时明显下降。产仔月份对母猪产仔性能的影响不显著,随着饲养管理水平的提升,月份对母猪的影响逐渐降低。规模化猪场可以根据第4胎时的母猪产仔情况对猪群年龄结构进行调整,加大第3~6胎次的母猪比重,及时淘汰低产母猪,更新猪群。

The reproductive rate of binary hybrid sows in large-scale pig farms is an important prerequisite factor affecting the production efficiency of commercial farms.In order to analyze the factors affecting the reproductive performance of binary hybrid sows,based on the annual reproductive production record data of binary hybrid sows in a certain large-scale pig farm in 2023,this study sorted and analyzed from two aspects:age(parity)and breeding season,aiming to grasp the important factors affecting the reproduction of binary hybrid sows and provide a basis for the scientific management of binary sows in commercial farms.The results showed that there was a significant difference(P<0.01)in the impact of parity on the litter performance of sows,showing an upward trend from the 3rd to the 6th litter,with the best litter performance at the 4th litter and a significant decrease at the 7th litter.The impact of litter month on sow litter performance is not significant,but with the improvement of feeding management level,the impact of litter month on sows gradually decreases.The conclusion is that large-scale pig farms can adjust the age structure of pig herds based on the litter size of sows at the 4th litter,increase the proportion of sows at the 3rd to 6th litter,timely eliminate low yielding sows,and update pig herds.