香蕉茎叶青贮饲料对肉牛育肥效能研究

Beef Cattle Fattening Efficiency of Banana Stems and Leaves Silage

饲喂效果是评价一种草料应用推广的重要指标。香蕉茎叶作为一种新型非常规饲草料资源,通过与常规饲草料的饲喂比较,明确其饲喂效能为生产应用提供科学依据。连续2年在不同肉牛养殖场选取18～24月龄的育肥肉牛,分别进行香蕉茎叶青贮饲料对育肥肉牛增重效果、香蕉茎叶青贮饲料与甘蔗稍叶青贮饲料、玉米秸秆鲜草料、玉米秸秆青贮料、皇竹草鲜草料、带苞全株玉米青贮饲料等不同饲草料对育肥肉牛增重效能的比较试验。于饲喂前和饲喂后的30、60、90、120天分别对供试牛只进行称重,通过牛只的日增质量评价香蕉茎叶青贮饲料对肉牛的育肥效能。结果表明:香蕉茎叶青贮饲料对西杂牛育肥增重效果明显高于本地黄牛,饲喂西杂牛日增重可达0.92～1.26 kg/头,饲喂本地黄牛日增重为0.41～0.59 kg/头;与其他饲草料饲喂效果相比,香蕉茎叶青贮饲料仅在饲喂30天的日增质量低于全株玉米青贮饲料0.106 kg/头(P>0.05),与玉米秸秆青贮饲料、甘蔗稍叶青贮饲料效果相当(P>0.05),略高于玉米秸秆鲜料、皇竹草鲜料饲喂效果(P>0.05)。香蕉茎叶青贮饲料对育肥肉牛饲喂效果可替代玉米植株、甘蔗稍叶、皇竹草等常规饲草料在肉牛养殖生产中推广应用。

The feeding effect is an important index to evaluate the application and popularization of forage.Banana stems and leaves silage is a new kind of unconventional forage resource. Compared with conventional forage, the feeding efficiency of banana stems and leaves were determined to provide a basis for production and application. In this paper, 18 to 24 months fattening beef cattle were selected in different breeding cattle farms,the effects of banana stems and leaves silage on fattening beef cattle were studied, and the weight gain efficiency comparisons of banana stems and leaves silage and sugarcane slight leaf silage, corn straw fresh grass, corn straw silage, bamboo straw fresh grass, whole plant corn silage with bud were conducted for two consecutive years. The beef cattle were weighed before feeding and 30, 60, 90 and 120 days after feeding. The fattening efficiency of banana stems and leaves silage on beef cattle was evaluated by the daily gain of cattle.The results showed that the effect of banana stems and leaves silage on fattening and weight gain of Western hybrid cattle was significantly higher than that on local yellow cattle. The daily weight gain of Western hybrid cattle was 0.92-1.26 kg per head and that of local yellow cattle was 0.41-0.59 kg per head. Compared with other kinds of forage, the daily weight gain of banana stems and leaves silage was lower than that of whole corn silage only in 30 days by 0.106 kg per head(P>0.05), and similar to that of straw silage and sugarcane slight leaf silage(P>0.05), slightly higher than that of corn straw fresh feed and bamboo straw fresh feed(P>0.05).The banana stems and leaves silage can substitute conventional forages like corn plant, sugarcane slightly leaf and bamboo grass, and be widely used in beef cattle breeding.