不同营养水平下新疆褐牛增重效果研究

摘要

60 Xinjiang brown cows with health disease-free,growth,age in normal were randomly divided into low cost of diet with high cost of diet group control group.The effects of different nutrition levels on fattening and cost of Xinjiang brown during different feeding periods were studied.The results showed that feeding amount and nutrition levels were lower than those of the control group in the whole period.In early stage,daily gain of Xinjiang browns in experimental group was 1.00 kg,lower than control by 0.14 kg,and there was significant difference（P 0.05）.In middle stage,daily gain of Xinjiang browns in experimental group was 0.63 kg,which in control group was 0.81 kg,and there was extremely significant difference（P0.01）.In final stage,daily gain of Xinjiang browns in experimental group was 0.68 kg,which in control group was 0.49 kg,and there was extremely significant difference（P0.01）.The average daily economic benefit of experimental group was higher than control group by 4.35 yuan per capital.%选择生长发育正常、健康无病、12月龄新疆褐牛公牛60头,随机分为低营养水平试验组与高营养水平日粮对照组。研究在不同育肥阶段,营养水平条件对新疆褐牛日增重及饲养成本的影响。结果表明：育肥全期,试验组的精料饲喂量及营养水平均低于对照组,在育肥前期,试验组的新疆褐牛日增重为1.00 kg,低于对照组0.14 kg,差异显著（P〈0.05）;在育肥中期,试验组新疆褐牛的日增重为0.63 kg,对照组的日增重为0.81 kg,差异极显著（P〈0.01）;在育肥后期,试验组新疆褐牛的日增重为0.68 kg,对照组新疆褐牛的日增重为0.49 kg,差异极显著（P〈0.01）。从育肥全期经济效益来看,试验组比对照组的日平均经济收益高4.35元/头。