不同糖蜜量对肉牛育肥效果的研究

目的]为了探讨肉牛育肥过程中的糖蜜用量。方法]从120头西杂牛中随机选48头，分为8组，每组．6头。以四个处理2个重复进行试验；Tr1为对照组，饲喂全株玉米秸青贮加精料；Tr2-Tr1＋糖蜜1kg，Tr3-Tr1＋糖蜜2kg，Tr4-Tr1＋糖蜜3kg。试验期100d，其中预试期·10d，试验期90d。每30d称重1次，在上午空腹称重。本试验数据采用SAs软件进行统计分析。结果]表明：添加甜蜜的各组与对照组比较，净增重均有显著性差异（P〈0．05），Trl平均净增重为83．88kg，显著低于（P〈0．05）添加糖蜜的Tr2、Tr3和Tr4，各试验组中以Tr3添加糖蜜2kg，净增重效果最好，为119．83kg，显著高于试验各组；同样添加糖蜜的各组ADG与对照组比较差异显著（P〈0．05），Trl为0．92kg，显著低于（P〈0．05）添加糖蜜的各组。结论]表明添加2kg糖蜜的Tr3肉牛的增重效果好而经济，头均比Tr1增收入556．67元。

Study on Fattening Effect of Beef Cattle with Different Amounts of Molasses

Objective]The dosage of Molasses was discussed during the fatten period. Method]48 cattle were randomly selected from 120 Simmental crossbreeding, which were divided into 8 groups, 6 cattle per group. The experiments were designed 4 treatment and 2 replications. Treatment （Tr.） 1 fed the corn silage and concentrates feed which was as a control. Tr2 ： Tr1＋ 1 kg/h/d molasses, Tr2 = Tr1＋2 kg/h/d molasses, Tr3 = Tr1 ＋ 3 kg/h/d molasses. The trail period was 100 days including 10 d pre- test period and 90d positive trial period. The cattle were weighed each 30 d in the morning at limosis time. The data were analyzed by SAS software. Result] The results showed that the live weight gain （LWG） was different between fed molasses group and the treatment groups（ P 〈0.05）. The live weight gain of Trl group was 83.88 kg which was much lower than that of Tr2, Tr3 and Tr4 （ P〈0.05）. The LWG was 119.83 kg of Tr3 that fed 2 kg molasses which were the best treatment and much higher than other groups＇. The average daily gain （ADG） of fed molasses group were higher than that of Trl（ P d0.05） , which was only 0.92 kg and was much lower （ P 〈0.05） than that of fed molasses groups. Conclusion] The experiment indicated that the Tr3 which fed 2 kg molasses got the best fatten effect, which increased 556.67 Yuan RMB than Tr1.