日粮蛋白质营养水平对奶牛繁殖性能影响及作用机理

Study on the Effect and Function Mechanism of Diet Protein Level on Reproductive Performance in Dairy Cattle

本文根据反刍动物蛋白质营养代谢特点,结合国内外日粮蛋白质水平与繁殖关系的研究进展情况,分析了血中尿素氮(BUN)、乳中尿素氮(MUN)与奶牛繁殖性能关系;日粮蛋白质营养水平对卵巢、子宫及生殖激素的影响。探讨了日粮蛋白质营养水平不足或过量对奶牛繁殖性能的作用机制。旨在为奶牛养殖场(户)在生产过程中,正确使用营养调控技术,科学合理配制日粮,使奶牛得到全价合理的营养供应,提高奶牛繁殖性能。

To study the protein nutrient metabolism characteristics of ruminant and unifying the research development of nutritional level and reproductive performance at home and abroad, the trial was conducted to analyze the relationship between BUN, MUN and the reproductive performance of dairy cow and the influence to ovary and uterus and reproductive hormone by ration protein level. It has discussed the mechanism that the deficiency and overdose of ration protein nutritional level affect cow reproductive capability. The aim is to rationally prepare diets and for nursery and stock men during process of production, which make cows obtain reasonable whole potency supply of nutrition, and raise the reproductive performance.