摘要
跟踪测定青海大通牦牛 5～ 1 5 (G1 )、1 7～ 2 7(G2 )和 2 9～ 3 9月龄 (G3 ) 3个年龄段血清总蛋白、白蛋白、球蛋白、尿素氮、肌酐和尿酸浓度。结果表明 :不同性别间各指标差异不显著。不同年龄段血清总蛋白、肌酐浓度表现为G3 >G2 >G1。不同月份 /季节间 ,血清总蛋白和尿素氮以 7月份最高 ,与高寒草地牧草蛋白质营养丰富、青年牦牛快速补偿生长一致 ;1～ 5月间为饲草供给绝对不足期 ,牦牛能有效再循环利用尿素氮 ,以保证体内积蓄 ,维持生存。血清蛋白质代谢物浓度随草地牧草营养物质变化而表现出相应的升高或降低 ;体重、日增重与血清蛋白质、尿素氮呈显著的正相关。
The study was conducted to measure the concentrations of serum protein metabolites including total protein (TP), albumin (ALB), globulin (GLOB), serum urea nitrogen (SUN), creatinine (CREA), uric acid (UA) of 5～15 (G1), 17～27 (G2) and 29～39 months old (G3) of Qinghai Datong growing yak with once of 2 months interval. The results were as follows: There were no significant differences of these serum metabolite concentrations between sexes, however, differences occurred among groups of ages and month seasons. For age groups, except the concentrations of A/G, the rests obviously showed differences. Concentrations of TP and CREA were arrayed in G3>G2>G1. The highest concentration of TP and BUN in July implied a rapidly compensatory growth of growing yak in the earlier warm seasons. The phenomenon of increasing or decreasing concentrations of serum metabolites with the change of grass nutrients supplemented, and significantly positive correlation coefficients among serum protein, BUN with live weight and average daily gain indicated that the feed nutrients supplemented did not reach their upper limitation for growing yak, and in most time of a year round, they maintained in a lower level of relative no homeostasis, which was the major reason caused poor performance of yak.
出处
《扬州大学学报（农业与生命科学版）》
CAS
CSCD
2002年第1期27-30,共4页
Journal of Yangzhou University：Agricultural and Life Science Edition
基金
农业部"九五"畜牧重点专题项目 (95 0 2 0 2 0 7)
