Acta Agrestia Sinica ›› 2012, Vol. 20 ›› Issue (3): 565-570.DOI: 10.11733/j.issn.1007-0435.2012.03.029

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Effect of Rain and Additives on Quality of Medicago sativa Silage

WANG Yong-xin1, MENG Shu-fang1, XU Qing-fang1, YU Zhu2, WANG Bao-ping1, GAO Wen-jun1, JIA Wei-wei1, WU Xuan1   

  1. 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
  • Received:2012-01-05 Revised:2012-03-15 Online:2012-06-15 Published:2012-07-05

淋雨和添加剂对苜蓿青贮品质的影响

王永新1, 蒙淑芳1, 许庆方1, 玉柱2, 王保平1, 高文俊1, 贾微微1, 吴璇1   

  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技学院, 北京 100193
  • 通讯作者: 许庆方,E-mail:xqfsx@sohu.com
  • 作者简介:王永新(1975- ),男,山西平定人,硕士,讲师,主要从事牧草生产与草地管理研究,E-mail:yongxwang@126.com
  • 基金资助:
    山西省科技攻关计划项目(20100311052);"十二五"国家科技支撑计划(2011BAD17B02);国家牧草产业技术体系(CARS-35);山西省高等学校教学改革项目(J2011027);山西农业大学科技创新基金(200109)资助

Abstract: The effect of rain and additives on the quality of Medicago sativa silage for fresh and rained alfalfa silage are reported. Additive treatments include control group (CK), formic acid (FA), previous fermented juice (PFJ), improved previous fermented juice (IPFJ), corn flour (CF), and PFJ+CF, IPFJ+CF. The pH value, ammonia-N, organic acid, nutrients and nitryl compound contents of 14 treatments were determined after 90 d ensiling period. Results showed that the pH, ammonia-N, lactic acid and acetic acid contents of alfalfa silage were significantly affected by rain and additives (P<0.01). Lactic acid content of IPFJ+CF was significantly higher than that of CK and other treatments (P<0.05). There was significant effect of rain and additives on DM, NDF, ADF and buffer capacity of alfalfa silage (P<0.05). Ash, CP, EE and WSC of alfalfa silage were significantly affected by additives (P<0.05). There were highly significant effects of raining, additives and interaction on nitrate and nitrite contents of alfalfa silage (P<0.01). Additives can improve fermentation quality of rained alfalfa silage. The IPFJ+CF was the best additive compared to all tested ones.

Key words: Medicago sativa, Raining, Additives, Silage, Quality

摘要: 为研究淋雨和添加剂对苜蓿(Medicago sativa)青贮品质的影响,试验设新鲜和淋雨苜蓿青贮2个因素,添加剂分别为对照、甲酸、绿汁发酵液、改良绿汁发酵液、玉米粉、绿汁发酵液+玉米粉、改良绿汁发酵液+玉米粉7个水平,共14个处理。青贮90 d后,测定各处理的pH、氨态氮、有机酸、营养成分和硝基化合物含量。结果表明:淋雨和添加剂均极显著降低苜蓿青贮饲料pH、氨态氮、乳酸和乙酸含量(P<0.01)。改良绿汁发酵液+玉米粉组的乳酸含量显著高于对照和其他处理组(P<0.05)。淋雨和添加剂显著影响苜蓿青贮饲料的干物质、酸性洗涤纤维、中性洗涤纤维含量和缓冲能值(P<0.05),添加剂对粗灰分、粗蛋白、粗脂肪和水溶性碳水化合物含量有显著影响(P<0.05)。淋雨、添加剂及其交互作用极显著影响苜蓿青贮饲料的硝酸盐和亚硝酸盐含量(P<0.01)。添加剂可改善淋雨苜蓿青贮的发酵品质,其中改良绿汁发酵液+玉米粉组合效果最明显。

关键词: 苜蓿, 淋雨, 添加剂, 青贮, 品质

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