添加青稞酒糟对西藏地区青稞秸秆和高羊茅混合青贮发酵品质的影响

草业学报 ›› 2012, Vol. 21 ›› Issue (2): 92-98.

添加青稞酒糟对西藏地区青稞秸秆和高羊茅混合青贮发酵品质的影响

原现军¹,余成群²,李志华¹,下条雅敬³,邵涛^1*

1.南京农业大学动物科学技术学院饲草加工与贮藏研究所,江苏南京 210095;
2.中国科学院地理科学与资源研究所,北京100101;
3.九州大学生物资源与环境学部动物饲料生产与利用研究室,日本福冈　812-8581

收稿日期:2011-01-10 出版日期:2012-02-25 发布日期:2012-04-20
通讯作者: E-mail:taoshaolan@yahoo.com.cn
作者简介:原现军(1983-),男,河南林州人,在读博士。E-mail:hnyxj0702@163.com
基金资助:
西藏主要农作物秸秆与栽培牧草混合青贮关键技术研究(XZ20093ZD)和“十二五”国家科技支撑计划“藏北退化草地综合整治技术与示范”(2010BAE00739-03)资助。

Effect of adding wet hulless barley distillers’ grains on fermentation quality of mixed ensilage of hulless barley straw and tall fescue in Tibet

YUAN Xian-jun¹, YU Cheng-qun², LI Zhi-hua¹, Masataka Shimojo³, SHAO Tao¹

1.Institute of Ensiling and Processing of Grass, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;
2.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
3.Laboratory of Animal Feed Science, Division of Animal Science, Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan

Received:2011-01-10 Online:2012-02-25 Published:2012-04-20

摘要/Abstract

摘要： 为评价添加不同水平青稞酒糟对青稞秸秆与高羊茅(4∶6)混合青贮发酵品质的影响,试验设对照组(Control)和3个添加水平(10%,20%和30%)的青稞酒糟处理组,青贮后第7,14和30天后打开青贮窖,测定青贮饲料发酵品质。结果表明,添加青稞酒糟可以抑制青贮早期好氧性微生物的活性,促进乳酸发酵,使pH值快速下降,青贮饲料快速进入稳定阶段。青贮30 d后,与对照组相比酒糟处理显著降低(P<0.05)了青贮饲料的pH值,提高了乳酸和水溶性碳水化合物含量,降低了(P<0.05)氨态氮/总氮及丙酸和丁酸含量。综合考虑,添加20%酒糟效果更佳。

Abstract: The effect of adding wet, hulless barley distillers’ grains (WHDG) on the fermentation quality in mixed silage of hulless barley (Hordeum vulgare) straw and tall fescue (Festuca arundinacea) during ensiling was assessed. There were three treatments of different WHDG addition ratios (10%, 20% and 30% of fresh weight) plus a control. The silos were opened on 7, 14 and 30 days after ensiling and the fermentation quality was analyzed. WHDG addition significantly improved the mixed silage fermentation quality, as indicated by a sharp accumulation of lactic acid (LA) (P<0.05), faster decline of pH, lower butyric acid content (BA) and NH₃-N/total N (P<0.05) as compared with control silage. These results indicated that WHDG addition not only effectively inhibited the activity of aerobic bacteria, but also speeded-up and greatly enhanced lactic acid production and pH reduction. This restricted the utilization of water soluble carbohydrate by undesirable bacteria and reduced the loss of water soluble carbohydrate, leaving more residual water soluble carbohydrate for lactic acid bacteria. From results of the present study, it is suggested that 20% WHDG addition is effective for improving the fermentation quality of mixed ensilage of hulless barley straw and tall fescue.

中图分类号:

S816.6

原现军,余成群,李志华,下条雅敬,邵涛. 添加青稞酒糟对西藏地区青稞秸秆和高羊茅混合青贮发酵品质的影响[J]. 草业学报, 2012, 21(2): 92-98.

YUAN Xian-jun, YU Cheng-qun, LI Zhi-hua, Masataka Shimojo, SHAO Tao. Effect of adding wet hulless barley distillers’ grains on fermentation quality of mixed ensilage of hulless barley straw and tall fescue in Tibet[J]. Acta Prataculturae Sinica, 2012, 21(2): 92-98.

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