摘要
为探究不同青贮饲料对肉牛采食量、生产性能和相关生化指标的影响,选用60头健康无病、体重相近的荷斯坦肉牛,随机分为4组,对照组只饲喂基础日粮,试验①、②和③组分别添加全株玉米青贮、玉米秸秆青贮和青贮苜蓿,试验为期60 d.结果显示,各组肉牛在试验期间第2、4、6、8周的平均采食量均高于对照组(P＞0.05);与对照组相比,试验①、②、③组肉牛的总增重和平均日增重均显著升高(P＜0.05),料肉比显著降低(P＜0.05);试验①、②、③组肉牛血清中的血糖含量显著降低(P＜0.05),其他血清生化指标不存在显著差异(P＞0.05).饲喂青贮饲料能够提高肉牛的采食量和生产性能,降低料重比,改善血清生化指标,肉牛日粮中添加青贮苜蓿的组合方式饲养效率最佳.
Abstract
In order to investigate the effects of different silage feed on feed intake,production performance,and related biochemical indicators of beef cattle,60 healthy,disease-free,and similar weight Holstein beef cattle were selected and randomly divided into 4 groups.The control group was only fed with basic diet,while the experimental groups ①,②,③ were supplemented with whole plant corn silage,corn straw silage,and silage alfalfa,respectively.The experiment lasted for 60 days.The results showed that the average feed intake of each group of beef cattle was higher than that of the control group at 2,4,6,and 8 during the experimental period(P＞0.05);Compared with the control group,the total weight gain and average daily weight gain of beef cattle in experimental groups①,②,③ were significantly increased(P＜0.05),while the feed to meat ratio was significantly reduced(P＜0.05);The blood glucose content in the serum of beef cattle in groups ①,②,③ was significantly reduced(P＜0.05),while there was no significant difference in other serum biochemical indicators(P＞0.05).Feeding silage feed can improve the feed intake and production performance of beef cattle,reduce feed to weight ratio,improve serum biochemical indicators.The combination of adding silage alfalfa to beef cattle diet has the best feeding efficiency.
维普
万方数据