摘要
本试验采用体外法研究硫、磷、钴、尿素4种物质对人工模拟瘤胃发酵的影响及其动态变化规律。试验采用L9(34)正交设计,设4个因素3个水平。结果表明:当硫、磷、钴、尿素的含量分别为0.4%、0.0%、1.0mg/kg、1.0%时,对瘤胃液pH值、氨氮(NH3-N)浓度、瘤胃液蛋白质(MCP)、总挥发性脂肪酸(TVFA)有显著影响,有利于瘤胃微生物活动,增加氮沉积。
This experiment was conducted to study effects of sulfur （S）, phosphorus （P）, cobalt （Co） and urea on artificial rumen fermentation in vitro.The trail were divided into 9 treatments by L9（3^4） orthogonal design.The results showed that ：0.4 % S,0.0 % P, 1.0 mg/kg Co and 1.0 % urea supplemented in diets of ruminants had significant effects on pH value, the concentration of ammonia nitrogen （NH3-N）, microbial crude protein （MCP）, total volatile acid （ TVFA ） and could improve the fermentation of rumen mieroorganism,and increase nitrogen retention.
出处
《中国饲料》
北大核心
2009年第9期15-17,共3页
China Feed
关键词
体外法
硫
磷
钴
尿素
瘤胃发酵
in vitro
sulfur
phosphorus
cobalt
urea
rumen fermentation
