【摘要】 选用12月龄左右西黄杂一代公牛24头,随机分成三组,对照组饲喂基础日粮,试验 组、 组分别在基础日粮中添加0.4%小苏打、0.8%小苏打,试验期为60d。试验结果表明:试验 组肉牛的增重最快,日增重分别比对照组、试验 组提高了8.81%(P<0.05)和2.30%(P>0.05);单位增重饲料成本,以试验 组最低,分别比对照组、试验 组降低了6.25%和7.55%。经综合评定,以添加0.4%小苏打的试验 组效果最好,其经济效益分别比对照组、试验 组提高了22.51%和17.12%。更多还原

【Abstract】 Twenty-four F1 beef steers of Xihuang crossbreds at the age of 12 mo were selected and randomly divided into control group (basal diet), groupⅠ(basal diet + 0.4% NaHCO3)and group Ⅱ(basal diet + 0.8% NaHCO3) for a 60-d feeding trial. Results showed that the average daily gain of groupⅡ were 8.81% (P<0.05) and 2.30% (P>0.05) higher than that of control group and group Ⅰ; the feed cost of weight-gain of Group I was 6.25% and 7.55% lower than that of control group and group Ⅱ. According to the comprehensive evaluation,groupⅠ had the best profits which was 22.51% and 17.12% higher than that of control group and group Ⅱ.更多还原