Lenártová V, Holovská K, Várady J, Sibert J
Vet Med (Praha). 1978 Oct;23(10):615-22.
The influence of concentration of nitrogenous matters (N-matters) and urea supplement in diet for broilers was studied, as exerted on the activities of the enzymes glutamate dehydrogenase (GLDH) and glutamine synthetase (GS) in liver, kidney, tissue and contents of the cecum. If 2% urea had been substituted for a portion of N-matters, no significant differences in the activities of both enzymes in liver and cecum were found. Higher levels of GLDH were recorded in the kidney of broilers given diets with the urea supplement of 17 and 19% N-matters concentrations. The GLDH and GS activities were significantly high in the contents of the cecum, the GLDH activity being the highest with the diet of 19% N-matters concentration. No significant changes in the GLDH activity depending on the concentration of N-matters in the diet were observed in the liver. The GS activity increased moderately with the higher concentration of N-matters.
研究了日粮中含氮物质（N物质）浓度和添加尿素对肉鸡肝脏、肾脏、组织及盲肠内容物中谷氨酸脱氢酶（GLDH）和谷氨酰胺合成酶（GS）活性的影响。若用2%的尿素替代部分N物质，肝脏和盲肠中这两种酶的活性未发现显著差异。在添加17%和19% N物质浓度尿素日粮的肉鸡肾脏中，GLDH水平较高。盲肠内容物中GLDH和GS活性显著升高，其中19% N物质浓度日粮的GLDH活性最高。肝脏中未观察到日粮中N物质浓度对GLDH活性有显著影响。GS活性随N物质浓度升高而适度增加。
