发酵玉米秸秆对育肥羊生长性能、营养物质消化率及甲烷排放的影响

发布时间：2018-01-03 03:05

本文关键词：发酵玉米秸秆对育肥羊生长性能、营养物质消化率及甲烷排放的影响　出处：《中国畜牧兽医》2016年12期 　论文类型：期刊论文

【摘要】：试验旨在研究以枯草芽孢杆菌、乳酸菌和酵母菌复合菌剂发酵的玉米秸秆对肉羊生长性能、营养物质消化率及甲烷排放的影响。选用30只健康杜泊×小尾寒羊F1代公羔为试验动物,随机分成2组,对照组饲喂未发酵的玉米秸秆,试验组以发酵玉米秸秆替代50%的未发酵玉米秸秆,精粗比45∶55。结果表明:复合微生物发酵秸秆能够显著提高肉羊平均日增重及营养物质消化率(P0.05);通过"开放式"呼吸测热装置测定甲烷排放量,试验组肉羊每天甲烷排放量比对照组降低21.5%(P0.05),甲烷能降低21.6%(P0.05)。以上结果说明,采用复合微生物菌剂发酵玉米秸秆能够显著改善秸秆品质;饲喂发酵玉米秸秆可提高肉羊生长性能及营养物质消化率,并能降低肉羊甲烷排放量,减少甲烷能损失。
[Abstract]:The experiment was conducted with Bacillus subtilis, corn straw and lactic acid bacteria and yeast fermentation inoculants on the growth performance of meat, nutrient digestibility and methane emissions. 30 healthy Dorper * Small Tail Han sheep F1 male lamb as the experimental animal were randomly divided into 2 groups, the control group was fed with no corn straw fermentation, the experiment group and the fermentation of corn straw replaced 50% non fermented corn straw, concentrate to forage ratio of 45: 55. the results showed that the composite microbial fermentation of straw can significantly improve sheep ADG and nutrient digestibility (P0.05); the "open" breath measuring methane emissions heat measuring device, the test group of methane the daily volume of emissions sheep is 21.5% lower than the control group (P0.05), methane can be reduced by 21.6% (P0.05). The results indicated that the composite microbial fermentation of corn straw inoculants can significantly improve the straw quality; fed fermented corn straw It can improve the growth performance and nutrient digestibility of meat sheep, and reduce methane emission and reduce the loss of methane energy.

【作者单位】：吉林省农业科学院畜牧分院;潍坊学院;公主岭市环保局;
【基金】：农业科技成果转化项目(2014GB2B100005) 吉林省肉羊产业体系吉林省农业科学院重大创新工程项目潍坊学院青年科研基金项目(2012Z19)
【分类号】：S826.5
【正文快照】： 3.公主岭市环保局,公主岭136100)中国农作物秸秆数量大,种类多,分布广,每年可产生各类秸秆约7亿吨,占全世界秸秆产量的20%~30%,其中粮食作物秸秆约5.8亿吨,占秸秆总量的89%,油料作物秸秆占8%,棉花、甘蔗秸秆占3%左右[1]。但秸秆综合利用的经济性差、商品化和产业化程度低。据

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