| 绿洲区苜蓿与鸭茅混播饲草的青贮发酵品质研究 |
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| 引用本文： | 张战胜,于磊,孙国君,张前兵.绿洲区苜蓿与鸭茅混播饲草的青贮发酵品质研究[J].草原与草坪,2015(3):50-54. |
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| 作者姓名： | 张战胜 于磊 孙国君 张前兵 |
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| 作者单位： | 石河子大学 动物科技学院,新疆 石河子,832000 |
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| 基金项目： | 石河子大学重大科技攻关计划项目“提高苜蓿青贮品质及饲用价值关键技术的研究” |
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| 摘 要： | 以苜蓿(Medicago sativa)与鸭茅(Dactylis glomerata)混播草地牧草为材料,按照90%苜蓿+10%鸭茅、70%苜蓿+30%鸭茅、50%苜蓿+50%鸭茅的比例进行青贮,通过分析对比发酵品质、营养成分、感官青贮效果等,以期优化最佳混合青贮的豆∶禾比例。试验结果表明:苜蓿和鸭茅混合青贮后,气味、质地、色泽感官评定均为优良,且pH呈下降趋势,青贮效果优于苜蓿和鸭茅的单独青贮。混合青贮降低了苜蓿青贮中氨态氮含量的36.4%,鸭茅青贮中乙酸、丙酸的含量明显下降;提高了苜蓿青贮中乳酸的含量,有效抑制了丁酸的产生,苜蓿+鸭茅饲草混贮比例为7∶3和5∶5处理结果未检测出丁酸。3个混合青贮组合的粗蛋白含量高出鸭茅单贮31.9%,酸性洗涤纤维低于鸭茅青贮12.6%。在青贮发酵过程中,苜蓿+鸭茅以7∶3比例混合青贮,有利于提高青贮饲料的发酵品质。
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| 关 键 词： | 紫花苜蓿 鸭茅 混合青贮 发酵品质 |
Study on fermentation quality of mixed silage of Medicago sativa/Dactylis glomerata pasture in oasis area |
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| ZHANG Zhan-sheng,YU Lei,SUN Guo-jun,ZHANG Qian-bing.Study on fermentation quality of mixed silage of Medicago sativa/Dactylis glomerata pasture in oasis area[J].Grassland and Turf,2015(3):50-54. |
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| Authors: | ZHANG Zhan-sheng YU Lei SUN Guo-jun ZHANG Qian-bing |
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| Abstract: | Forage from Medicago sativa/Dactylis glomerata pasture was used as raw material to make silage with 3 formulas(90% M.sativa + 10% D .glomerata ,70% + M.sativa + 30% D .glomerata and 50% M.sa-tiva + 50% D .glomerata)and the fermentation quality was tested.The results showed that the smell,texture, color and sensory of the mixed silage were excellent,and the pH value showed a decreasing trend.The quality was better than the single silage separately made with M.sativa and D .glomerata .The ammonia nitrogen con-tent of mixed silage reduced by 36.4% compared to single silage of M.sativa ,the acetic acid and propionic acid contents of D .glomerata silage obviously decreased.The mixed silage improved the lactic acid content and effec-tively inhibited the production of butyric acid.The butyric acid was not detected in treatments of M.sativa +D .glomerata(7∶3 and 5∶5 of mixing ratio).The crude protein content and detergent fiber of 3 mixed silage treatments were 31.9% higher and 12.6% lower than that of D .glomerata silage respectively.Therefore,the treatment of M.sativa + D .glomerata by 7∶3 ratio was the best. |
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| Keywords: | Medicago sativa Dactylis glomerata mixed silage fermentation quality |
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