肉牛对不同物理性状的玉米秸饲料利用效果的研究

Study on Availability of Beef Cattle on Corn Stalks with Different Physical Properties

为研究肉牛对不同玉米秸杆产品的利用情况,选18月龄西门塔尔牛与当地黄牛的F136头,分别用铡碎、揉碎、揉碎压捆、制粒、压块和挤压成棒状的六种玉米秸秆饲料进行了肉牛饲养试验和消化试验。结果秸秆采食量以后三种加工处理的秸秆为最高,铡碎为最低,揉碎和揉碎压捆居中;日粮表观消化率以秸秆颗粒型日粮最低,其他几种秸秆型日粮差异不大;肉牛增重以应用秸秆饲料块和秸秆饲料棒的肉牛增重效果最好,铡碎秸秆最差,揉碎和揉碎压捆居中。除铡碎型外,其他几种玉米秸杆饲料用于育肥牛均可取得较好的增重效果。

Feeding and digestion trials were carried out to determine the availability of beef cattle＇s on cutting stalk, rubbing with cutting stalk, stalk bale, stalk pellet, stalk block and stalk stick. The results showed that the feed intake was highest in later three corn stalk groups followed by those in rubbing with cutting stalk and stalk bale groups, and lowest in cutting stalk group. The digestibility of nutrient of stalk pellet group was lower than other groups which had the similar digestibility of nutrient. The weight gains were higest in stalk block and stalk stick groups followed by rubbing with cutting stalk and stalk bale groups, lowest in cutting stalk group. Except cutting stalk type, other stalk types had the good weight gains on beef cattle.