雄性水牛去势对瘤胃消化代谢的影响  

Effect of Castration on the Rumen Digestion and Metabolism in Male Buffaloes

作　　者：杨国宇[1,2] 胡清林[1,2] 陈杰 

机构地区：[1]河南农业大学牧医工程学院 [2]南京农业大学动物医学院

出　　处：《河南农业大学学报》1997年第3期296-300,共5页Journal of Henan Agricultural University

摘　　要：选用装有永久性瘤胃瘘管、十二指肠瘘管和临时性颈静脉插管的雄性水牛３头（１．５岁、２５０ｋｇ），研究去势对瘤胃微生物消化代谢的作用。结果表明，动物去势后１２ｄ，瘤胃细菌蛋白下降１９．０８％（Ｐ＜０．０５），ＴＶＦＡ下降８．０７％（Ｐ＜０．０５），且丙酸比例下降；而瘤胃液中ＮＨ３—Ｎ水平增加１５．２４％（Ｐ＜０．０５）。去势后皱胃进入十二指肠食糜流量下降３３．６％，１ｄ内进入十二指肠总Ｎ量减少３２．０％；含Ｎ组分中，细菌蛋白Ｎ量、过瘤胃蛋白Ｎ量、氨态Ｎ量分别下降４２．７％，２５．５％和２８．２％。说明去势能明显影响瘤胃的消化代谢。Three male Chinese buffaloes (1.5y,250kg),with chronic rumen fistulae and duodenal cannula,were used to study the effect of castration on the rumen microbial digestion and metabolism.The results are as follows:castration reduced the concentrations of rumen bacterial protein by 19.08%(P<0.05),TVFA by 8.07%(P<0.05) and the percentatge of propionate in total acid contents, but induced 15.24% increase of NH 3 N content(P<0.05).In the meantime,the flow of digesta and the total content of N to duodenum decreased by 33.6% and 32.6% respectively.In the total centent of N,the bacterial protein N,by pass protein N and ammina N decreased by 42.7%,25.5% and 28.2% respectively.These results suggested that castration could change the rumen microbial digestion and metabolism.

关 键 词：水牛 瘤胃 消化代谢 阉割 

分 类 号：S823.83[农业科学—畜牧学]