冬春季不同秸秆比例和饲料添加剂对架子牛增重效果研究

Study on the Effect of Different Straw Straw Ratio and Feed Additives on Weight Gain of Shelf Cattle in Winter and Spring

中文关键词: 青贮玉米秸  添加剂  日增重  饲料报酬  肉牛

英文关键词: Silage corn stover  Additive  Daily gain  Feed remuneration  Beef cattle

中文摘要:

      [目的] 为得到不同比例青贮玉米秸饲喂牛时,促生长剂及微量元素等作饲料添加剂的作用效果以及日粮中合理确定青贮玉米秸用量,提高饲养效益。[方法]选择生长发育正常,体重、体格相近,健康无病,周岁左右的秦川小公牛12头,随机分为4组,每组3头,比较促生长剂、微量元素和维生素以及不同青贮玉米秸比例3种因素对架子牛增重效果影响。[结果]通过试验可以看出,日粮中利用60%的青贮玉米秸,添加由促生长剂和微量元素等组成的添加剂预混料喂肉牛可以获得892g日增重,较不用添加剂增加110g,即提高14.07%,每kg增重节约饲料0.8kg(8.48%)；饲料中添加促生长剂比较不添加者,可提高日增重11.23%,减少饲料消耗8.76%(单位增重)。降低饲料中秸秆比例,青贮玉米秸由60%减少到40%(风干重),日增重提高31.72%达1088g,每kg增重消耗饲料7.11kg(干物质6.4kg),节约饲料1.99kg,提高饲料报酬21.87%,总体经济效益相似,但是每kg增重多耗精料0.57kg,每kg增重饲料费用并未降低。[结论]架子牛规模育肥值得大力推广。

英文摘要:

      objective：In order to obtain different proportions of silage corn stover for feeding cattle, the effect of growth promoters and trace elements as feed additives and the reasonable determination of the amount of silage corn stover in the diet to improve feeding efficiency. Methods：Choose 12 normal Qinchuan bulls with normal growth and development, similar body weight and physical condition, healthy and disease-free. They are randomly divided into 4 groups, each with 3 heads. Compare growth promoters, trace elements and vitamins, and the proportion of different silage corn stalks Three factors affect the weight gain effect of cattle. Results: It can be seen from the experiment that 60% silage corn stover is used in the diet, and the additive premix consisting of growth promoters and trace elements is added to the beef cattle to obtain a daily weight gain of 892g, an increase of 110g compared with no additives, that is, an increase of 14.07 %, 0.8kg (8.48%) of feed is saved per kg of weight gain; those with growth promoter added to the feed are less added, which can increase daily weight gain by 11.23% and reduce feed consumption by 8.76% (unit weight gain). Reduce the proportion of straw in feed. Silage corn straw is reduced from 60% to 40% (air dry weight). The daily weight gain is increased by 31.72% to 1088g. The feed consumption per kg weight gain is 7.11kg (dry matter 6.4kg), and the feed is 1.99kg. The increase in feed remuneration is 21.87%, and the overall economic benefits are similar, but the increase in weight per kg consumes 0.57 kg of concentrate, and the cost of feed per kg of weight gain has not decreased. Conclusion: Scale cattle fattening is worth promoting vigorously.