瘤胃保护性氨基酸对内蒙古白绒山羊氮消化代谢的影响  

Effect of Rumen-Protected Amino Acid Products on Nitrogen Metabolism in Inner Mongolia White Cashmere Goats

作　　者：王建华[1] 王洪荣[2] 张海鹰[3] 赵秀英[3] 

机构地区：[1]青岛市畜牧兽医研究所,青岛266100 [2]扬州大学动物科学与技术学院,扬州225009 [3]内蒙古畜牧科学院,呼和浩特010030

出　　处：《畜牧兽医学报》2006年第1期38-43,共6页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：教育部"全国优秀博士学位论文"作者专项资助(200056)

摘　　要：选用9只安装永久性瘤胃瘘管,十二指肠近端瘘管和回肠末端瘘管的内蒙古白绒山羊半同胞羯羊,随机分为3组,即保护性氨基酸组(A组)、常规氨基酸组(B组)和对照组(C组),每组3只进行动物试验。采用体内法研究在相同蛋白质水平(CP 9.93%)日粮条件下,日粮中添加瘤胃保护性蛋氨酸(RPMet)和瘤胃保护性赖氨酸(RPLys)对内蒙古白绒山羊氮消化代谢的影响。结果表明:在内蒙古白绒山羊基础日粮中添加RPMet和RPLys显著地增加了绒山羊的干物质采食量DMI(P<0.05),提高了机体氮的沉积(P>0.05),并有降低尿中尿素氮(UUN)排出量的趋势(P>0.05)。Nine growing wethers of Inner Mongolia white cashmere goats （IMWCG） with the same father, fitted with permanent cannula at the rumen, T shape cannula at the proximal duodenum and terminal ileum were used to investigate the effect of tureen-protected amino acid （RPAA） products on nitrogen metabolism in IMWCG. The experimental goats fed diet with the same nitrogen （CP 9.93%） level of a diet consisted of hay（70%）, corn（19.65%） and soybean meal （4. 5%）, were divided into three group in a free random block design as follows： rumen protected amino acids group （group A）, normal amino acids group（group B）, and control group（group C）. Total collection of feces and urine was performed every 24h for 5d. The results showed that sup- plemental rumen protected methionine （RPMet） and rumen-protected lysine （RPLys） increased nitrogen intake （P〈0.05）, and retained nitrogen （P〉0. 05）, and had a tendency to decrease urine urea nitrogen excretion （P〉0.05）. However, plasma free methionine and lysine concentrations were unaffected by supplemental with RPMet and RPLys.

关 键 词：绒山羊 瘤胃 瘤胃保护性氨基酸 氮 

分 类 号：S827.5[农业科学—畜牧学]