摘要
6～12月龄生长牛在传统饲养方式下 ,添加肉牛补充料500g,改善了日粮蛋白质、钙、磷和微量元素的营养状况 ,干物质采食量从5.2kg 提高到6.4kg,日增重从373g显著提高到663g(P<0.05) ,单位增重所消耗的饲料从13.94 :1下降到9.65 :1,添加补充料后生长牛血液中的微量元素和理化指标有不同程度的改善。
Sixteen cross-breed and local heifers(6～12 months) were allocated two experiments.Each experiment were designed the contral and the trail group by breed,age,sex at random.The contral group was feed a base diet.The trail group was feed base diet plus supplementary 500g that composed by urea fish meal mineral.The results showed that:there were significant differences for average daily gain(ADG),feed intake and feed efficiency(feed/gain:G/G)between the contral and the trail groups(P<0.05).The dry matter intake(DMI) improved from 5.2kg to 6.4kg for growing beef cattle,ADG were enhanced from 0.373kg to 0.663kg and the feed conversion efficiency were decreased from 13.94:1 to 9.65:1 .The contents of trace element in blood,plasma,serum and biochemical index for the heifers and growing beef cattle were adjusted with supplementing the supplementary.
出处
《动物营养学报》
CAS
CSCD
1999年第S1期217-221,共5页
CHINESE JOURNAL OF ANIMAL NUTRITION
关键词
生长牛
补充料
生产性能
理化指标
growing beef cattle
supplementary
production performance
biochemical iudex
