添加甲酸对麻叶荨麻青贮品质的影响

doi:10.11733/j.issn.1007-0435.2013.03.031

›› 2013, Vol. 21 ›› Issue (3): 618-621,625.DOI: 10.11733/j.issn.1007-0435.2013.03.031

添加甲酸对麻叶荨麻青贮品质的影响

张晓庆^1,2, 李鹏², 郑琛¹, 金艳梅³

1. 甘肃农业大学动物科技学院草业生态系统教育部重点实验室, 甘肃兰州 730070;
2. 中国农业科学院草原研究所, 内蒙古呼和浩特 010010;
3. 山东大学威海分校海洋学院, 山东威海 264209

收稿日期:2012-12-30 修回日期:2013-02-20 出版日期:2013-06-15 发布日期:2013-06-05
通讯作者: 金艳梅
作者简介:张晓庆(1978- ),女,甘肃永昌人,助理研究员,主要从事草地管理与牧草利用方面的研究,E-mail:zhangxq137@sina.com
基金资助:
草业生态系统教育部重点实验室(甘肃农业大学)开放课题(CYZS-2011017);中央级公益性科研院所基本科研业务费专项资金(1610332013017)资助

Effect of Formic Acid on Silage Quality of Hempleaf Nettle (Urtica cannabina)

ZHANG Xiao-qing^1,2, LI Peng², ZHENG Chen¹, JIN Yan-mei³

1. Faculty of Animal Science and Technology of Gansu Agricultural University/Key Laboratory of Grassland Ecosystem of Ministry of Education, Lanzhou, Gansu Province 730070, China;
2. Grassland Research Institute, CAAS, Hohhot, Inner Mongolia 010010, China;
3. Faculty of Marine Studies, Shandong University at Weihai, Weihai, Shandong Province 264209, China

Received:2012-12-30 Revised:2013-02-20 Online:2013-06-15 Published:2013-06-05

摘要/Abstract

摘要： 为探讨甲酸对麻叶荨麻(Urtica cannabina)发酵品质和青贮保存效果的影响,设置2, 4, 6 mL·kg^-1 FM共3个甲酸添加剂处理(分别为低、中、高水平),以不添加甲酸处理为对照,室温袋贮60 d后开封取样,测定其pH值、化学成分、体外消化率和乳酸含量,分析评价其发酵品质及保存效果。结果表明:无甲酸处理或添加2~4 mL·kg^-1甲酸青贮麻叶荨麻,其青贮品质和保存效果很差;添加高剂量(6 mL·kg^-1)甲酸虽然同样未能生产出品质优良的青贮饲料,但显著降低了pH值、乳酸含量和氨态氮(P<0.05),有降低纤维组分的趋势(P=0.132; P=0.087),显著增加了干物质、可溶性糖含量和中性洗涤纤维体外消化率(P<0.05),有利于改善发酵品质和提高植物细胞壁利用效率。试验结果将为荨麻属植物及与之类似的高水分、高蛋白质牧草青贮技术提供基础数据。

关键词: 麻叶荨麻, 甲酸, 青贮品质

Abstract: To explore the effect of formic acid (FA) treatments on silage quality of hempleaf nettle, freshly-harvested plants were treated without FA (control), with 2 mL穔g^-1 FA (FA-low), 4 mL穔g^-1 FA (FA-med), and 6 mL穔g^-1 FA (FA-high) of fresh weight, respectively. There were 15 silage replicates per treatment. All bags were stored indoors at room temperature for 60 days. Chemical composition, in vitro digestibility and fermentative parameters of the products after 0, 3, 5, 15, 20, and 60 days of ensiling were assessed. Results showed that nettle untreated or treated with 2~4 mL穔g^-1 FA produced badly preserved silage while those treated with 6 mL穔g^-1 FA significantly reduced the pH value, ammonia-N and butyric acid concentrations of silage. Not improved fermentation quality for silage preservation was seen. It also had a significantly higher dry matter, water-soluble carbohydrate (WSC) and in vitro digestibility of NDF than the control silage. Medium and high FA treatments tended to have a lower fiber fraction (P=0.132; P=0.087) than the control, indicating that fresh forage with 6 mL穔g^-1 FA could improve utilization of fiber fractions. These results contribute information for producing improved silages of nettles and other forages with high moisture and protein contents.

Key words: Hempleaf nettle, Formic acid, Silage quality

中图分类号:

S816.53

张晓庆, 李鹏, 郑琛, 金艳梅. 添加甲酸对麻叶荨麻青贮品质的影响[J]. , 2013, 21(3): 618-621,625.

ZHANG Xiao-qing, LI Peng, ZHENG Chen, JIN Yan-mei. Effect of Formic Acid on Silage Quality of Hempleaf Nettle (Urtica cannabina)[J]. , 2013, 21(3): 618-621,625.

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添加甲酸对麻叶荨麻青贮品质的影响

Effect of Formic Acid on Silage Quality of Hempleaf Nettle (Urtica cannabina)

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