| 摘要: |
| 为了研究生长肉牛在冬春舍饲方式下,不同蛋白质来源的日粮对增重的效果以及生长的营养需要,我们于1980年冬至1981年春,对夏洛来杂交一代当年阉牛进行了5种日粮长时间的对比饲养试验。为了进一步说明各种养分的利用率,在该饲养试验的基础上又进行了消化试验和氮、钙、磷平衡试验。我们从5组饲养中选定其中三组日粮,即钢丝面(糊化淀粉)尿素日粮,颗粒饲料尿素日粮,常规饲料尿素日粮,每组3头,于饲养试验结束之前,接着进行试验和平衡试验,预试期10天(4月12日至4月21日),试验期10天(4月22日至5月1日)。 |
| 关键词: 常规饲料 能量沉积 日增重 颗粒饲料 营养需要 日粮 饲养试验 尿素 消化能 生长肉牛 |
| DOI： |
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| 基金项目: |
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| A STUDY ON THE DIGESTIBILITY AND METABOLISM OF GROWING,STEERS WITH INDOOR FEEDING AND ON THEIR NUTRIENT REQUIREMENTS |
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| Abstract: |
| In order to study the effect of LWG in different N sources of ration and the nutrient requirements of growing steers of charolais crosses.We arranged a comparative feeding trial with five different rations from the winter of 1980 to the spring of 1981.At the end of this trial,three groups,i.e.so-called feed-noodles urea,normal urea,palleted urea remained to be tested on digestibility,N,Ca,P, balance.In each group,the silage,hay and concentrates were the same,the only difference was that the part of corn mea... |
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