草业学报2012，Vol.21Issue(1)：248-253,6.
牦牛尿嘌呤衍生物排出量对皱胃注射酵母RNA水平的响应
Response of urinary purine derivatives excretion to veast RNA infusion levels in the yak abomasum
摘要
Abstract
Three castrated yaks fitted with T-shaped abomasum cannulae were used to study the recovery rate of urinary purine derivative after abomasum infusion with incremental amounts of purine bases. As the infusion RNA levels increased, excretion of urinary allantoin (564-1 426 μmol/kg BW0.75), total purine derivative (629 - 1 507 μmol/kg BW0.75) and the ratio of allantoin to total purine derivative (0. 90 - 0. 95) increased linearly (P<0. 01), although excretion of uric acid, creatinine and nitrogen were not significantly (P>0. 05) affected by infusion levels. The relationship between daily urinary purine derivative excretion (Y, mmol/d) and exogenous purine supply via abomasums infusion (X, mmol/d) was Y=0. 85X+33. 02 (R2 =0. 96), suggesting that 85% of the supplied exogenous purine was excreted in the urine of the yaks.关键词
牦牛/嘌呤衍生物/皱胃/微生物氮Key words
yak/ purine derivative/ abomasum/ microbial nitrogen分类
农业科技引用本文复制引用
王虎成,叶得河,周建伟,龙瑞军..牦牛尿嘌呤衍生物排出量对皱胃注射酵母RNA水平的响应[J].草业学报,2012,21(1):248-253,6.基金项目
国家自然基金重点项目(30730069)资助. （30730069）
