摘要
本文旨在对内蒙古白绒山羊限制性氨基酸进行研究。选用12只装有瘤胃、十二指肠和回肠瘘管的内蒙古白绒山羊,采用随机区组试验设计,并采用递减法进行十二指肠氨基酸灌注,试验分别测定了小肠可吸收氨基酸的量、氨基酸的平衡性、氮沉积、日增重等指标。试验结果表明:(1)减少蛋氨酸、组氨酸、精氨酸、丝氨酸、半胱氨酸对内蒙古白绒山羊的小肠氨基酸消失量、氨基酸的平衡性均有显著影响。(2)氨基酸灌注量减少后,根据氮沉积求出的各种氨基酸的相对限制程度依次为半胱氨酸(72.17%)、丝氨酸(54.25%)、精氨酸(51.76%)、蛋氨酸(29.07%)、组氨酸(20.45%)。内蒙古白绒山羊的限制性氨基酸是半胱氨酸、丝氨酸、精氨酸、蛋氨酸和组氨酸。
The aim of this study was to determine limiting amino acids in Inner Mongolian White Cashmere Goats. Twelve growing cashmere goats fitted with permanent cannula in rumen and T-type cannula at proximal duodenum and terminal ileum were used. Duodenally infused amount on amino acids （AA） was based on amino acid flows in small intestine of goat according to an incremental model. Amino acid mixtures were infused into the duodenum by removal of each amino acid in turn from AA mixtures of corresponding group. The disappearing of amino acids in Small intestine and balance of amino acids as well as metabolism of nitrogen were determined. The results indicated that： （1） disappearing of amino acids in the small intestine and ABBI were significantly influenced for removal of Met, Ser, Cys, His, Arg treatments. （2） Compared with control treatment, retained nitrogen （g/kgw^0.75） by removal of Met, His, Arg, Ser, Cys treatment was decreased by 29.07%, 20.45%, 51.76%, 54.25% and 72.17%, respectively. The limiting amino acids in Inner Mongolian White Cashmere Goats are Cys （72.17%）, Ser （54.25%）, Arg （51.76%）, Met （29.07%） and His （20.45%）.
出处
《动物营养学报》
CAS
CSCD
北大核心
2006年第1期26-31,共6页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
全国优秀博士学位论文作者资助项目(200056)
关键词
内蒙古白绒山羊
限制性氨基酸
Inner Mongolian White Cashmere Goats
Limiting Amino Acids
