批次生产时母猪淘汰的管理 - 闫之春.pdf

Manage Sow Culling for

Precision Batch Production

批次生产时母猪淘汰的管理 Jason ZC YAN 闫之春

提纲Outlines

• 研究目的Objectives

• 文献综述 Literature review

• 结果讨论 Results and discussion

母猪更新淘汰的目的Why we should

replace culled sows timely?

• (被动地)更新死亡/外伤母猪，保证配种批次满负荷、连续稳定达到配 种目标；Replace involuntary culling, meet batch sow breeding goal;

• (主动地)淘汰低效率母猪，提高繁殖效率；Voluntarily culling sows to improve sow herd efficiency;

• 同时，at the same time,

• 将母猪被动(死亡)淘汰降至最低，保持合理的主动更新比例；平衡母 猪更新成本vs母猪群效率最佳; minimize involuntary culling and maintain reasonable voluntary replacement rate; optimize sow herd efficiency over replacement cost;

• 参配进群的后备能生产3+胎; Strive to let as many as verified, bred gilts reach 3+ parity

母猪更新淘汰的目的Always weight

benefit over cost: cull? Not cull?

更高成本added cost 更好效果added benefits