提取精油后废弃薰衣草秸秆育肥牛试验效果分析

Cattle Fattening Experiment with Waste Lavender Straw Produced in Process of Essential Oil

为探索废弃薰衣草秸秆的高效开发利用技术，将提取精油后产生的薰衣草秸秆制作成薰衣草秸秆青贮．开展薰衣草秸秆青贮与常规饲草料的育肥肉牛效果对比试验。选用新疆褐牛公牛40头，随机分为试验组和对照组．每组20头牛。试验组粗饲料为薰衣草秸秆青贮，对照组粗饲料为玉米秸秆青贮，饲喂量均为8～12kg／a，两组精饲料配方相同。预饲期10d，正式育肥期共210d。记录正式育肥期始末实验牛只的体重，计算试验期增重和平均日增重。结果表明，薰衣草秸秆青贮育肥牛与常规玉米秸秆育肥牛在增重指标上差异不显著（P〉0．05），育肥期内薰衣草秸秆青贮育肥牛日增重为（0．98±0．10）kg，玉米秸秆育肥牛日增重为（0．99±0．11）kg。薰衣草秸秆与常规饲草料育肥肉牛的效果相似，表明薰衣草秸秆青贮能够作为粗饲料应用于肉牛养殖。

In order to explore the efficient development and utilization technology for waste lavender straw, the contrast experiment of cattle fattening effect was carried out with conventional forage and lavender straw silage prepared by waste lavender straw produced in process of essential oil. A total of 40 Xinjiang brown bulls were selected and randomly divided into two groups, with 20 bulls in each group. The roughage of experiment group was lavender straw silage and that of control group was corn straw silage, the feeding quantity were both 8-12 kg/d. The experiment and control group feed the same concentrate. After a 10-day adaptation, the formal experiment began and lasted for 210 d. The weights of the bulls in both groups were recorded at the beginning and end of the experiment period, and the total gain and average daily gain were caleulated. The results showed that the total gain of bulls fed lavender straw silage was not significantly different from that of bulls fed with corn straw silage （P〉0.05）. Tile daily gain of experiment group was （0.98±0.10） kg and that of the control group was （0.99±0.11 ） kg. The cattle fattening effect of lavender straw was proved to be similar with that of conventional forage in this study, indicating that the waste lavender straw could be applied in cattle fattening, as a kind of roughage.