Influence of energy supply on microbial protein synthesis and renal urea handling in Corriedale sheep

被引：3
|
作者：
Tebot, I [1 ]
Ibarra, AL [1 ]
Purtscher, F [1 ]
Cirio, A [1 ]
机构：
[1] Fac Vet, Dept Fisiol, Montevideo 11600, Uruguay
来源：
JOURNAL OF ANIMAL AND FEED SCIENCES | 2004年 / 13卷
关键词：
energy supply; microbial protein synthesis; urea; kidney; sheep;
D O I：
10.22358/jafs/73845/2004
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
The effect of high energy intake on microbial protein production and renal urea kinetics was studied in Corriedale sheep by the urinary allantoin method and renal functional tests. High energy diet increased microbial protein production (6.61 +/- 0.90 vs 4.30 +/- 0.60 g/d in normal energy diet, P<0.05). The efficiency of N utilization by rumen microbes tended to improve (19.8 +/- 4.2 vs 16.8 +/- 1.9 g microbial N/kg DOMR, NS). A reduction in fractional excretion of urea and a tendency to decrease of urinary urea elimination were also observed. This renal urea sparing reduced N losses, contributing to the blood urea pool available for rumen recycling.
引用
收藏
页码：223 / 226
页数：4
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