奶牛粪尿中含氮量、NH_3和H_2S散发量的比较  

Compare of high-yield and middle-yield holstein dairy cows in the nitrogen content in feces and urine and the NH_3,H_2S emission content in feces

作　　者：龚飞飞[1] 胡登林[1] 赵正剑[1] 张志军[1] 余雄[1] 

机构地区：[1]新疆农业大学动物科学学院,乌鲁木齐830052

出　　处：《中国乳品工业》2011年第8期30-32,共3页China Dairy Industry

基　　金：国家奶牛产业技术体系;科技部"十一五"科技支撑项目(2006BAD04A11-06);自治区重大专项(200731134-2)(200731135-2)

摘　　要：以荷斯坦高产和中产奶牛为例,研究其粪便含水量、粪尿中总氮(TN)、氨态氮(AN)浓度和NH3、H2S的散发量。选取高产和中产奶牛牛舍各一栋,测定粪便含水量、粪尿中总氮(TN)氨态氮(TN)质量分数以及粪中NH3和H2S气体的散发量。结果表明,粗蛋白的摄入与需求比增加,奶牛粪尿中氮和硫的质量分数也会增加。超过动物蛋白质需要量的几乎所有的氮都是通过尿液排出体外,尿氮增加的幅度大于粪氮增加的幅度。因此,减少粪氮不是降低氮污染的有效途径。Test to compare the high-yield and middle-yield Holstein dairy cows in feces water content, the total nitrogen （TN）, ammonia nitrogen （AN） concentration in feces and urine, NH3 and H2S emission content in feces. Were selected a high-yield and a middle-yield cow- shed, determination the feces water content, the total nitrogen （TN）, ammonia nitrogen （AN） concentration and NH3, H2S emission content in feces. The results showed that：The ratio of crude protein intake and demand increase, the nitrogen and sulfur content in feces and urine will increase. Protein, which more than demand will almost all be excreted through urine, the rate of increase urine nitrogen is greater than the rate of increase fecal nitrogen. Reduce the fecal nitrogen is not an effective way to reduce nitrogen pollution.

关 键 词：高产奶牛 中产奶牛 总氮 氨态氮 NH3散发量 H2S散发量 

分 类 号：S823.91[农业科学—畜牧学] TS252.1[农业科学—畜牧兽医]