...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Animal Science >Effect of ensiling and silage additives on fatty acid composition of ryegrass and corn experimental silages
【24h】

Effect of ensiling and silage additives on fatty acid composition of ryegrass and corn experimental silages

机译：青贮饲料和青贮饲料添加剂对黑麦草和玉米实验青贮饲料脂肪酸组成的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two experiments were conducted using laboratory mini-silos to study the effect of ensiling and silage additives on fatty acid (FA) composition, including minor or unusual FA, of ryegrass and corn silages. Ryegrass was ensiled for 12 wk with no additives, with the addition of a bacterial inoculant or formic acid. Corn was ensiled for 9 wk without additives, with the addition of a bacterial inoculant or calcium formate. Ensiling affected both total FA content and FA composition of ryegrass silages. Total FA concentration increased (P < 0.001) during ryegrass ensiling. The proportions (g/100 g of total FA) of the major unsaturated FA, 18:3n-3 and 18:2n-6, were not affected (P > 0.05) by ensiling. However, their concentration (mg/g of DM) in silages was greater (P = 0.017 and P = 0.001, respectively) than in fresh ryegrass. Two 18:2 FA (trans-11, cis-15 and cis-9, cis-15) that were not originally present in the fresh ryegrass were detected in silages. Silage additives affected the FA composition of ryegrass silages, mostly by increasing the proportions of SFA, but not on total FA concentration. Ensiling did not affect (P = 0.83) total FA content of corn silages; however, FA composition was affected, mostly by decreasing the proportions of 18:2n-6 and 18:3n-3. Silage additives had no effect on corn silage FA composition. Exposing corn silages to air resulted in no oxidation of FA or reduction in total FA content or composition.
机译：使用实验室小型料仓进行了两个实验，以研究青贮饲料和青贮饲料添加剂对黑麦草和玉米青贮饲料中脂肪酸（FA）组成（包括次要或不寻常的FA）的影响。在没有添加剂的情况下，将黑麦草青贮12周，加入细菌接种剂或甲酸。在不添加添加剂的情况下，将玉米压实9周，并加入细菌接种剂或甲酸钙。封套影响黑麦草青贮饲料的总FA含量和FA组成。黑麦草青贮过程中总FA浓度增加（P <0.001）。主要不饱和脂肪酸的比例（g / 100 g，以总FA计）18：3n-3和18：2n-6不受青贮的影响（P> 0.05）。但是，它们在青贮饲料中的浓度（mg / g DM）比新鲜黑麦草中的浓度高（分别为P = 0.017和P = 0.001）。在青贮饲料中检测到两个原本不存在于新鲜黑麦草中的18：2 FA（反式11，顺式15和顺式9，顺式15）。青贮添加剂影响黑麦草青贮饲料的FA组成，主要是通过增加SFA的比例，而不是总FA浓度。封穗未影响玉米青贮饲料中总FA含量（P = 0.83）;但是，FA组成受到影响，主要是通过降低18：2n-6和18：3n-3的比例。青贮饲料添加剂对玉米青贮饲料FA组成没有影响。将玉米青贮饲料暴露于空气不会导致FA氧化或FA总含量或组成减少。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号