日粮营养物质对妊娠母猪早期胚胎成活率调控作用研究进展

母猪胚胎死亡高峰期出现在妊娠早期,调控饲粮营养水平是提高妊娠母猪早期胚胎成活率的重要措施之一。胚胎早期成活率直接影响母猪的产仔数,进而影响母猪生产全周期的繁殖节律和生产节律的正常运行。因此妊娠早期通过营养调控的手段,实现胚胎的顺利着床、附植对妊娠的全过程具有重要意义。本文对妊娠母猪早期胚胎成活的主要调控因素能量与蛋白质水平、功能性氨基酸、纤维素以及维生素进行综述,为解决规模化猪场母猪生产环节中存在的"轻妊娠,重泌乳"现象提供技术参考。

Research progress in the effects of dietary nutrients on early embryo survival rate in pregnant sows

The peak death rate of sow embryo survival rate appears in early pregnancy. One of the important measures to improve the early embryo survival rate of pregnant sows is to regulate the nutritional level of diet.The early embryo survival rate directly affects the litter size of the sow,which in turn affects the reproductive rhythm and normal operation of the production cycle of the sow. Therefore,it is of great significance to realize the smooth implantation and attachment of embryos through the means of nutrition regulation in early pregnancy.This article reviewed the energy and protein levels,functional amino acids,dietary fiber,and vitamins that regulate the internal and external causes of early embryonic sow embryo survival. In order to address the "light pregnancy and heavy lactation" phenomenon provide a technical reference.