酪蛋白灌注水平对瘤胃蛋白质代谢的影响的研究

STUDY OF THE EFFECT OF DIFFERENT LEVEL OF CASEIN INJECTION ON RUMEN PROTEIN METABOLITION

本试验以安装瘤胃瘘管及十二指肠过桥瘘管的两只小尾寒羊为研究对象,研究了不同酪蛋白灌注水平对瘤胃蛋白质代谢的影响。研究结果发现酪蛋白灌注水平对绵羊瘤胃液中游离氨基酸(FAA)、总氨基酸(TAA)、肽(PEP)、氨态氮(NH3-N)和瘤胃内微生物蛋白(MCP)的浓度都有影响。其中FAA、TAA和NH3-N在酪蛋白灌注量为40 g/d时浓度最高,PEP的浓度在灌注量为50 g/d时浓度最高。

Two Small- Tail Sheep（sTS） were installed rumen cannula and crossing cannula. The effect of different level casein injection on rumen protein metabolition was studied. The results showed that the levels of casein infused in rumen could affect the contents of FAA,TAA,PEP,NH3 - N and MCP , and the contents of FAA,TAA and NH3 - N were highest at 40 g/d infusion ; the TAA and NH3 - N were the highest at 50 g/d infusion.