Effects of Wilting and Additives on Old World Bluestem

doi:10.11733/j.issn.1007-0435.2012.04.027

›› 2012, Vol. 20 ›› Issue (4): 768-771.DOI: 10.11733/j.issn.1007-0435.2012.04.027

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Effects of Wilting and Additives on Old World Bluestem

WU Zhao-hai¹, LIANG Chao¹, WANG Yong-xin¹, GAO Wen-jun¹, YU Zhu², SUN Qi-zhong³, BAI Chun-sheng⁴, XU Qing-fang¹

1. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
2. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
3. Grassland Research Institute, Chinese Academy of Agricultural Sciences, Huhhot, Inner Mongolia 010010, China;
4. College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, China

Received:2011-10-24 Revised:2012-01-12 Online:2012-08-15 Published:2012-08-28

晾晒和添加剂对白羊草青贮的影响

吴兆海¹, 梁超¹, 王永新¹, 高文俊¹, 玉柱², 孙启忠³, 白春生⁴, 许庆方¹

1. 山西农业大学动物科技学院, 山西太谷 030801;
2. 中国农业大学动物科学院, 北京 100193;
3. 中国农业科学院草原研究所, 内蒙古呼和浩特 010010;
4. 沈阳农业大学园艺学院, 辽宁沈阳 110866

通讯作者: 许庆方
作者简介:吴兆海(1988-),男,山东潍坊人,硕士研究生,研究方向为牧草栽培、草产品加工与利用, E-mail:wzh07128@163.com
基金资助:
山西省科技攻关计划项目"青贮饲料布氏乳杆菌制剂的研制与开发"(20100311052);"十二五"国家科技支撑计划"优质牧草资源开发与多元化草产品加工利用关键技术研究与示范"(2011BAD17B02);公益性行业(农业)科研专项项目(201203042);国家牧草产业技术体系(CARS-35)资助

Abstract

Abstract: Effects of additives and moisture contents on old world bluestem silage were studied. Fresh and wilted old world bluestem in the heading stage were placed in sealed vacuum plastic bags with formic acid (6 mL穔g^-1) or sucrose (2%) and ensiled for 360 days. Results showed that wilting treatment increased pH, and decreased lactic acid and ammonia nitrogen contents significantly (P<0.01). Either formic acid or sucrose could improved silage fermentation quality that decreased pH, acetic acid and ammonia nitrogen contents and increased lactic acid contents of old world bluestem silage (P<0.01). The dry matter recovery of silage was increased with additives (P<0.05) and nitrate content was reduced after ensilaged. Generally, the silage fermentation quality of old world bluestem can be improved by adding either formic acid or sucrose, especially when the material was initially wilted.

Key words: Bothriochloa ischaemum, Silage, Moisture content, Additives

摘要： 为探究含水量和添加剂对白羊草(Bothriochloa ischaemum)青贮的影响,以抽穗期新鲜的和晾晒的白羊草为原料,分别设计对照、添加甲酸(6 mL·kg^-1)或蔗糖(2%)处理,袋装密封青贮360 d后取样分析。结果表明:晾晒处理白羊草青贮饲料的pH较高,乳酸和氨态氮含量极显著下降(P<0.01);添加蔗糖或甲酸能够改善白羊草青贮饲料的发酵品质,甲酸或蔗糖均能够极显著降低白羊草青贮饲料的pH、乙酸和氨态氮含量(P<0.01),极显著提高乳酸含量(P<0.01);添加甲酸或蔗糖显著提高了白羊草青贮饲料的干物质保存率(P<0.05);青贮之后,硝酸盐含量下降。添加剂可改善白羊草青贮饲料的发酵品质,而白羊草晾晒后再进行添加剂青贮则效果更佳。

关键词: 白羊草, 青贮饲料, 含水量, 添加剂

CLC Number:

S816.53

WU Zhao-hai, LIANG Chao, WANG Yong-xin, GAO Wen-jun, YU Zhu, SUN Qi-zhong, BAI Chun-sheng, XU Qing-fang. Effects of Wilting and Additives on Old World Bluestem[J]. , 2012, 20(4): 768-771.

吴兆海, 梁超, 王永新, 高文俊, 玉柱, 孙启忠, 白春生, 许庆方. 晾晒和添加剂对白羊草青贮的影响[J]. , 2012, 20(4): 768-771.

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Effects of Wilting and Additives on Old World Bluestem

晾晒和添加剂对白羊草青贮的影响

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