放牧生态系统调控效应Ⅳ. 促生长剂对放牧绵羊消化吸收量的调控效应  

Effect of the stimulant growth on digestion and absorption of grazing sheep

作　　者：王钦[1] 任继周[1] 王天玲 李峻成[1] 肖金玉[1] 卢月香[3] 

机构地区：[1]甘肃省草原生态研究所,兰州730020 [2]定西地区卫校 [3]中国农业科学院兰州畜牧与兽药研究所

出　　处：《中国草食动物》2002年第5期3-6,共4页China Herbivores

基　　金：国家自然科学基金重点项目 (396 30 2 5 0 );甘肃省攻关项目(GK971- 2 - 34A)资助

摘　　要：绵羊瘤胃灌注促生长剂F89,通过神经内分泌途径 ,调节代谢进行分配的生理性调控 ,使干物质食入量增加 8 74 % ,蛋白质食入量增加 12 0 8%。十二指肠的干物质流通量比食入量少17 10 % ,比回肠多 18 73% ,十二指肠的蛋白质流通量比食入量多 4 2 2 9% ,比回肠多 5 8 2 5 %。干物质消化主要在胃区进行 ,胃区比小肠多 1 6 0个百分点 ,比大肠多 8 2 2个百分点 ,而蛋白质的消化主要在小肠进行 ,它的消失量占肠道消失总量的 71 2 8%。干物质在消化道中的消化率 2组比 3组多 5 89个百分点 ,比 1组多 9 34个百分点 ,蛋白质依次多 1 2 7个百分点和 3 95个百分点 ,能量分别多 7 89个百分点和 11 18个百分点。可见 ,F89有促进采食。A stimulant growth called F 89 was infused by rumen of sheep, which regulated motabolism and distributing its production by nerve-incretion to get DM intake more 8 74% and protein 20 50% than other groups.DM of duodenal content was less 17 10% than that of intake and was more 18 73% than that of ileum content.CP of duodenal content was more 42 29% than that of intake and was more 58 25% than that of ileum content.And separately,the digestibility of DM,CP and GE of group 2 was more 5 89,1 27 and 7 89 percent points than that of group 3,and was more 9 34,3 95 and 1 18 than that of group 1 in the tract.So it was concluded that F 89 could improve the intake, digestibility and utility of the feed.

关 键 词：放牧生态系统 促生长剂 食糜流通量 生理性调控 蛋白质消化 绵羊 

分 类 号：S826.5[农业科学—畜牧学] S826.1[农业科学—畜牧兽医]