鲁梅克斯K-1杂交酸模和干玉米秸混合青贮料喂牛试验

８头４～５岁的役用秦川母牛按配对原则分为对照组和试验组。两组牛的精料配方基本相同，但试验组牛饲粮用７．７５％的鲁梅克斯Ｋ－１杂交酸模粉（以下简称鲁梅克斯Ｋ－１）代替对照组中同等重量的小麦麸；对照组牛的粗料全部用干玉米秸，试验组半用６０％干玉米秸和４０％的玉米秸＋鲁梅克斯叶混合青贮料。正试期２０ｄ。结果表明：试验组牛的平均日增重为 ０．７８７ｋｇ，对照组０．６９０ｋｇ，试验组较对照组牛日增重提高了 １４．０６％；每增重 １ｋｇ活重试验组牛消耗精、粗料分别为２．５４ｋｇ、５．２５ｋｇ，对照组半分别为２．９０ｋｇ、５．５０ｋｇ，试验组较对照组个节约精料０．３６ｋｇ、粗料０．２５ｋｇ；试验组每头牛毛盈利为７３．３４元，对照组５９．４０元，前者比后者提高经济效益２３．４７％。说明在役用母牛饲粮中，用鲁梅克斯粉代替精料中的小麦麸并用玉米秸＋鲁梅克斯混合青贮料能获得良好的生产性能和经济效益。

The effect of feeding farm cow with mixed silage fodder of corn stalk and a cossbred polygonum rumex K - 1

farm Qinchuan cows of 4 - 5 year - old were divided into control group and test group on pair principle. The formula of the concentrate fed in the two groups were alike but in test group. 7. 75% Polygonum Rumex K - 1 powder(called Rumex k - 1 for short in the following) wee used to replace the same amount of wheat bran as used in control group. The oughage was totally dry corn stover in control group, while in test group it was composed of 60% dry corn stover and 40% silage made with corn stover and Rumex k -1 leaves. The test lasted for 20days. The result showed that the average daily gain of the cows in test group was 0. 787kg while in control group it was 0. 690kg and the daily gain in test group was inceased by 14. 06% over that in control group. 2. 54kg concentrate and 5. 25kg roughage were consumed for 1kg gain of live body weight in test group, while in control group 2. 90kg concentrate and 5. 50kg roughage were needed and 0. 36kg concentrate and 0. 25kg roughage were saved in test group compared with control group in test group feeding each cow oughly 73. 34 yuan was eaned, while in conol group 59. 40 yuan was earned and the economic benefit of test group was increased by 23. 47% over that of control group It indicated that better perfomance and economic benefit can be eached by eplacing wheat bran of the concentrate in farm cow diet with Rumex k - 1 powder and using silage made with mixed corn stover and Rumex k - 1.