玉米纤维饲料、青贮玉米和苜蓿干草间组合效应研究

发布时间：2018-04-15 03:21

本文选题：玉米纤维饲料 + 组合效应　；参考：《东北农业大学学报》2017年08期

【摘要】：试验旨在研究玉米纤维饲料(DCGF)、青贮玉米、苜蓿干草间组合效应,将DCGF与青贮玉米以0100、1585、2575、3565、4555、1000比例组合,利用体外瘤胃发酵技术,分析不同组合对体外发酵指标、单项组合和综合组合效应值影响,选择DCGF与青贮玉米理想组合比例(X);再与苜蓿干草以0100、2080、4060、6040、8020和1000组合发酵,筛选3种饲料间适宜组合比例。结果表明,DCGF与青贮玉米各组合在产气参数上差异显著(P0.05),随着DCGF比例增加,菌体蛋白、总挥发性脂肪酸产量逐渐提高;多项组合效应指标评定结果表明DCGF与青贮玉米以3565组合时正组合效应值最大。DCGF/青贮玉米(3565)与苜蓿干草以8020比例组合时产气量最大,以6040比例组合时氨态氮组合效应值最大,以8020组合时总挥发性脂肪酸组合效应值最大。综合组合效应指数,表明DCGF/青贮玉米(3565)与苜蓿干草以6040比例组合时效应值最大。由此可见,DCGF与青贮玉米以3565比例组合较为适宜,DCGF/青贮玉米(3565)与苜蓿干草以6040比例组合效果较好。
[Abstract]:The purpose of the experiment was to study the combination effect of corn fiber feed (DCGF), silage corn and alfalfa hay. The combination of DCGF and silage maize in the proportion of 0100 ~ 1585 ~ 25755 ~ 2575 ~ 3565 ~ (5) ~ 455~ (1 000) was used to analyze the in vitro fermentation index of different combinations by using rumen fermentation technology.The optimal ratio of DCGF to silage maize was selected by single combination and combination effect value, and the optimum combination ratio of DCGF and silage was screened out by fermentation with alfalfa hay by combination of 0100 ~ 2080 ~ 4060 ~ (60) ~ (60) ~ (60) ~ (40) ~ (80) and 1000 ~ (th).The results showed that there were significant differences in gas production parameters between DGF and silage maize combinations. With the increase of DCGF ratio, the yield of bacterial protein and total volatile fatty acids increased gradually.The results showed that the maximum positive combination effect value of DCGF and silage maize was at 3565. DCGF / silage maize 3565) and alfalfa hay had the largest gas yield when combined with 8020, and the combined effect of ammonia nitrogen with 6040 ratio was the largest.The combination effect of total volatile fatty acids was the largest in 8020 combinations.The combination effect index showed that DCGF/ silage maize silage 3565) and alfalfa hay had the highest effect value when the ratio was 6040.It can be seen that the combination of DCGF and silage maize at the ratio of 3565 is more suitable for the combination of DCGF / silage maize 3565) and alfalfa hay with a ratio of 6040.
【作者单位】：东北农业大学动物科学技术学院;山西农业大学动物科技学院;
【基金】：国家奶牛产业技术体系项目(CARS-37)
【分类号】：S816

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