麻叶荨麻与玉米粉混贮对青贮品质的影响

doi:10.11686/cyxb20150123

草业学报 ›› 2015, Vol. 24 ›› Issue (1): 190-195.DOI: 10.11686/cyxb20150123

麻叶荨麻与玉米粉混贮对青贮品质的影响

张晓庆¹, 金艳梅², 李发弟³, 王育青^{1*, *}, 李鹏¹

1.中国农业科学院草原研究所,内蒙古呼和浩特 010010;
2.山东大学威海分校海洋学院,山东威海 264209;
3.兰州大学草地农业科技学院,甘肃兰州 730020

收稿日期:2013-12-12 出版日期:2015-01-20 发布日期:2015-01-20
通讯作者: wyq1960@sohu.com
作者简介:张晓庆(1978-),女,甘肃永昌人,副研究员,博士。E-mail:zhangxiaoqing@caas.cn
基金资助:
国家“十二五”科技支撑计划项目(2012BAD13B07)和中央级公益性科研院所基本科研业务费专项资金资助

Effect of corn flour on the quality of Urtica cannabinasilage

ZHANG Xiaoqing¹, JIN Yanmei², LI Fadi³, WANG Yuqing^{1, *}, LI Peng¹

1.Grassland Research Institute, CAAS, Hohhot 010010, China;
2.Faculty of Marine Studies, Shandong University at Weihai, Weihai 264209, China;
3.College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China

Received:2013-12-12 Online:2015-01-20 Published:2015-01-20

摘要/Abstract

摘要： 为解析添加玉米粉对麻叶荨麻青贮发酵品质和养分保存效果的影响,将麻叶荨麻与玉米粉5∶1混合调制青贮饲料,将其DM含量提高到310 g/kg,以麻叶荨麻单独青贮作为对照。每个处理18个重复,室温袋贮60 d后开封取样,测定青贮发酵品质和营养成分及消化率,并分别在贮藏后第0,3,5,15,20和60天调查pH、有机酸、氨态氮的动态变化。结果表明,与玉米粉混合青贮通过快速降低pH和提高乳酸含量而明显加快了麻叶荨麻的发酵进程,发酵前15 d,混贮组pH下降速率和乳酸累积速率较单贮组快;混贮组显著降低了(P<0.05)pH、氨态氮、乙酸、丁酸及NDF和ADF含量,显著提高了(P<0.05)乳酸、水溶性碳水化合物(WSC)含量、费氏评分及干物质与纤维组分的体外消化率;脂肪含量在两个处理之间无显著差异。以上结果表明,麻叶荨麻与玉米粉以5∶1混合青贮能够成功保存麻叶荨麻的高品质营养特性,从而生产高品质青贮饲料,同时还能改善家畜对它的利用效率。

Abstract: To investigate the effect of corn flour (CF) on the nutritive value ensiled Urtica cannabina or hempleaf nettle (HN),CF was added to fresh HN using a 1∶5 mixture (CF∶HN) silage. Dry matter (DM) was adjusted to approximately 310 g/kg. Silage without CF was used as a control. Silage was packed in plastic bags; each treatment had 18 replicates. The fermentative quality, nutrient component and in vitro digestibility of silages were assessed after 60 days of ensiling at ambient temperature. The pH, NH₃-N and organic acids of silages were measured after 0, 3, 5, 15, 20, and 60 days. The results revealed that CF treatment significantly (P<0.001) accelerated silage fermentation by reducing pH and increasing lactic acid concentration. In the first 15 days of fermentation, the silages with CF treatment tended to have a faster rate of pH decline and lactic acid accumulation than the silage without CF treatment. This study also showed that the CF treatment silage had significantly lower (P<0.05) pH, NH₃-N, acetic and butyric acids, neutral detergent fiber (NDF) and acid detergent fiber (ADF) than silages without CF treatment after 60 days of ensiling. In contrast, CF treated silages contained significantly higher (P<0.05) lactic acid, water-soluble carbohydrate (WSC) and Flieg point values, as well as higher in vitro digestibility of DM, NDF and ADF. There was no difference in crude fat between the CF treatment and the control treatment. In conclusion, CF improved the nutritive value of HN silage, potentially increasing utilization by livestock.

张晓庆, 金艳梅, 李发弟, 王育青, 李鹏. 麻叶荨麻与玉米粉混贮对青贮品质的影响[J]. 草业学报, 2015, 24(1): 190-195.

ZHANG Xiaoqing, JIN Yanmei, LI Fadi, WANG Yuqing, LI Peng. Effect of corn flour on the quality of Urtica cannabinasilage[J]. Acta Prataculturae Sinica, 2015, 24(1): 190-195.

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麻叶荨麻与玉米粉混贮对青贮品质的影响

Effect of corn flour on the quality of Urtica cannabinasilage

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