摘要
选择健康无病、体格相近 ,不同年龄的盘江黄牛 2 4头平均分为 4组 ,其中 2岁牛 2个组( A、B组 ) ,成年牛 2个组 ( C、D组 ) ,随机将 4组牛分为高精料喂量组和低精料喂量组 ,以研究不同年龄盘江黄牛在育肥过程中给以不同精料日喂量时 ,其增重能力及育肥效益试验结果 ,在同喂高精料日粮状况下 ,2岁牛平均日增重显著低于成年牛日增重 ( P<0 .0 5 ) ;在日粮精料量不同时 ,高精料喂量组牛的增重速度显著高于低精料喂量组 ( P<0 .0 5 )。表明 ,牛的采食能力和饲料营养水平是影响肉牛增重的重要因素 ,日粮的精料喂量也在一定程度上决定肉牛的增重速度。
Twelve two year old and twelve adult Panjiang yellow cattle with same body weight were divided into two groups(A group vs. B group, C group vs. group), respectively. Every age group were fed with high concentrate feed and low concentrate feed to analyze the finishing effects of Panjiang yellow cattle at different ages on different concentrate level feeds. Average daily gain of adult Panjiang yellow cattle was lower than that of the two year old Panjiang yellow cattle(\%P<0.05\%) at high level concentrate diet.Average growthiness of group fed with high concentrate feed was significantly higher than that of group fed with low concentrate feed(\%P<0.05\%). Results showed that feed intake ability and feed nutrient level were the main factors affecting body gain of beef cattle and to some extent, the proportion of concentrate in diet affects body weight gain of beef cattle.
出处
《黄牛杂志》
2003年第3期21-22,58,共3页
Journal of Yellow Cattle Science
