配合饲料中消化能粗蛋白比对奶牛瘤胃发酵的影响  

Effects of Digestible Energy-to-Crude Protein Ratio of Formula Feed on Dairy Cows Rumen Fermentation

作　　者：崔海净[1] 王建华[2] 吕永艳[1] 蔡李逢[1] 孙国强[1] 

机构地区：[1]青岛农业大学动物科技学院,山东青岛266109 [2]青岛市畜牧兽医研究所,山东青岛266100

出　　处：《中国农学通报》2010年第14期13-17,共5页Chinese Agricultural Science Bulletin

基　　金：公益性行业(农业)科研专项"原料奶质量在线控制与奶牛场智能化管理示范与推广"(nyhyzx07-036-05);山东省农业重大应用技术创新资金"奶牛精细饲养管理应用技术研究"

摘　　要：旨在研究不同消化能粗蛋白比(DE/CP)对奶牛瘤胃发酵的影响。将奶牛常用饲料组合成5种配合饲料,其消化能粗蛋白比(DE/CP)分别为12.6、14.3、15.9、16.4和17.0,应用人工瘤胃技术研究不同DE/CP对瘤胃液pH、氨氮(NH3-N)质量百分数、微生物蛋白(MCP)产量和挥发性脂肪酸(VFA)质量百分数的影响。结果表明:不同DE/CP对瘤胃pH影响不显著(P>0.05),而在NH3-N质量百分数、MCP产量和VFA质量百分数方面不同DE/CP间差异显著(P<0.05)或极显著(P<0.01)。结论:在此试验设计条件下,配合饲料DE/CP为15.9时最有利于奶牛瘤胃发酵。This study was proposed to investigate the effect of different DE/CP on rumen fermentation.5 mixtures were made of common feed for dairy cows ,their digestible energy-to-crude protein ratio（DE/CP） were 12.6 、 14.3 、 15.9 、 16.4 and 17.0 ,respectively,the effects of different DE/CP on pH,NH 3 -N concentration 、 MCPand VFA concentration were researched by short-term artificial rumen technique.The results： there were no significant influences in different DE/CP on rumen pH （ P 0.05 ） ,the significant effects occurred in different DE/CP on NH 3 -N concentration 、 MCP and VFA concentration.The conclusion： the formula feed in which ratio （DE/CP）was 15.9 was best for dairy cows rumen fermentation in this experiment.

关 键 词：人工瘤胃 配合饲料 瘤胃发酵 

分 类 号：S815.2[农业科学—畜牧学]