蛋白质保护与NPN缓释技术结合对奶牛产奶效果的研究  

Effect of Milk Production Performance with Combination of Protein Protection and NPN Releasing Slowly

作　　者：孙国强[1] 徐祗瑞 刘宗柱[1] 

机构地区：[1]莱阳农学院动物科学系,山东莱阳265200 [2]山东省郯城市畜牧局,郯城市276100

出　　处：《中国奶牛》2002年第1期23-24,共2页China Dairy Cattle

摘　　要：以蛋白质保护技术与ＮＰＮ级释技术相结合对能量饲料、蛋白质饲料和尿素等进行处理，以处理所得的复合蛋白质饲料替代精料中１００％的豆饼（试验１）和５０％的豆饼（试验Ⅱ组）饲喂奶牛。结果表明，精料成本分别降低了６．０７％和３．０８％；试验Ⅰ组日产奶量比对照组提高了１．２７千克（Ｐ＜０．０５），试验２组产奶量未得到显著提高（Ｐ＞ ０．０５）；试验组经济效益分别比对照组提高９．５１％和４．３７％。Compound Protein foodstuff were utilized to substitute 100%(experiment I) and 50%(experiment II) soybean cake in concentrate of dairy cattle. The results showed that concentrate cost reduced by 6. 07% and 3. 089 respectively, as compared with that of the control; while the average daily milk production of the experiment I was 1. 27kg higher than that of the control(P<0. 05 ); the economic efficiency of experiment groups were 9. 51% and 4. 73% higher than that of the control group.

关 键 词：奶牛 复合蛋白质饲料 经济效益 NPN 缓释技术 产奶效果 

分 类 号：S823.91[农业科学—畜牧学]