摘要
选用 12 只两月龄东北细毛公幼羊,按体重大小随机分为 4 组,测定不同加工处理全混合日粮(TM R)对其生产性能的影响,并分析TM R饲养的经济效益。试验结果表明,在含玉米秸的TMR 中以尿素精料等氮代替豆饼,在不降低幼羊生产性能的前提下(P> 0.05),使每千克增重的饲料费用降低26.44% ;在含尿素精料的 TMR 中,玉米秸的碱化处理虽未显著影响幼羊的日增重及日采食 TM R 量(P> 0.05),但却使TMR 转化率提高了 21.52% (P< 0.01),而且每千克增重的饲料费用降低 11.25% ;对含尿素精料及碱化玉米秸的TMR 进行颗粒化加工,与加工前相比,试羊日增重、日采食 TMR 量及其转化率分别提高了 161.92% (P< 0.01)、88.74% (P< 0.01)及28.01% (P< 0.01),每千克增重的饲料费用降低17.64% 。
Twelve lambs with age of 2 months were allotted randomly to four groups according to body weight and used to study the effect of four different total mixed rations on their performance. The results showed:①When soybean cake in diet with corn stover was replaced by urea concentrate on the basis of equal nitrogen, the performance of lambs was not affected(P>0.05),the feed cost per kilogram gain was reduced by 26.44%; ②Alkali-treatment on the corn stover in diet with the urea concentrate did not affect the average daily gain and diet intake adversely(P<0.05),but the diet efficiency was improved by 21.52%(P<0.01) and the feed cost per kilogram gain was decreased by 11.25%;③Pelleting of diet with the alkali-treated corn stover and the urea concentrate increased the average daily gain, diet intake and its efficiency by 161.92%(P<0.01),88.74%(P<0.01) and 28.01%(P<0.01) respectively and the feed cost per kilogram gain was reduced by 17.64%.
出处
《中国畜牧杂志》
CAS
北大核心
1999年第5期9-11,共3页
Chinese Journal of Animal Science