反刍动物营养 Ruminant Nutrition

利用双外流持续发酵系统研究植物精油对瘤胃发酵和甲烷生成的影响

  • 金恩望 ,
  • 卜登攀 ,
  • 王加启 ,
  • 姜雅慧 ,
  • 包万华 ,
  • 史浩亭 ,
  • 沈维军 ,
  • 李发弟
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  • 1. 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193;
    2. 甘肃农业大学动物科学技术学院, 兰州 730070

收稿日期: 2013-04-19

  网络出版日期: 2013-09-16

基金资助

十二五科技支撑计划(2012BAD12B02);中国科学院知识创新工程重要方向项目(XDA01010301)

Effects of Plant Essential Oil on Rumen Fermentation and Methanogenesis Studied Using a Dual Flow Continuous Culture System

  • JIN Enwang ,
  • BU Dengpan ,
  • WANG Jiaqi ,
  • JIANG Yahui ,
  • BAO Wanhua ,
  • SHI Haoting ,
  • SHEN Weijun ,
  • LI Fadi
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  • 1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100193, China;
    2. College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China

Received date: 2013-04-19

  Online published: 2013-09-16

摘要

本研究采用双外流持续培养法,探讨添加不同水平的植物精油对瘤胃发酵和甲烷(CH4)生成的影响。每种植物精油(肉桂油和留兰香油)的4种添加水平(0、100、500和1 500 mg/L)作为处理因素,每个处理3个重复,每个试验周期为6 d。结果表明:与对照组相比,1)添加1 500 mg/L的肉桂油显著降低了发酵液pH、饲粮中性洗涤纤维降解率(dNDF)、酸性洗涤纤维降解率(dADF)和粗蛋白质降解率(dCP)(P<0.05)。2)添加100 mg/L的留兰香油和肉桂油对挥发性脂肪酸(VFA)浓度和乙酸/丙酸(A/P)无显著影响(P>0.05)。添加500 mg/L的肉桂油在发酵27和99 h以及添加1 500 mg/L的肉桂油在所有发酵时间点均显著降低了总挥发性脂肪酸(TVFA)、乙酸和丙酸浓度(P<0.05)。随着发酵时间的延长,1 500 mg/L肉桂油添加组TVFA、乙酸和丙酸浓度显著下降(P<0.05),A/P显著升高(P<0.05)。3)添加500 mg/L的肉桂油以及1 500 mg/L的肉桂油和留兰香油均显著降低了发酵液中的原虫数量(P<0.05)。添加3种剂量的肉桂油和留兰香油均显著降低了CH4体积分数(P<0.05)。由此可见,添加100 mg/L的肉桂油和留兰香油均有助于改善瘤胃微生物发酵。

本文引用格式

金恩望 , 卜登攀 , 王加启 , 姜雅慧 , 包万华 , 史浩亭 , 沈维军 , 李发弟 . 利用双外流持续发酵系统研究植物精油对瘤胃发酵和甲烷生成的影响[J]. 动物营养学报, 2013 , 25(10) : 2303 -2314 . DOI: 10.3969/j.issn.1006-267x.2013.10.014

Abstract

This experiment was conducted to study the effects of essential oil supplemental level on rumen fermentation and methanogenesis using a dual flow continuous culture system. The four supplemental levels (0, 100, 500 and 1 500 mg/L) of cinnamon oil or spearmint oil were used as the treatment factors, there were 3 replicates per treatment and each experiment lasted for 6 days. The results showed as follows: compared with the control group, 1) the supplementation of 1 500 mg/L cinnamon oil significantly decreased the pH, neutral detergent fibre degradation rate, acid detergent fiber degradation rate and crude protein degradation rate (P<0.05). 2) There were no significant differences in the concentration of volatile fatty acid and acetate/propionate ratios (A/P) in 100 mg/L cinnamon oil or spearmint oil groups (P>0.05). The concentrations of total volatile fatty acid (TVFA), acetate and propionate were significantly decreased in 500 mg/L cinnamon oil group at 27 and 99 h and 1 500 mg/L group at all the fermentation time (P<0.05). With the prolonging of fermentation time, the concentrations of TVFA, acetate and propionate were significantly decreased (P<0.05), and A/P was significantly increased in 1 500 mg/L cinnamon oil group (P<0.05). 3) The supplementation of 1 500 mg/L cinnamon oil or 500 mg/L spearmint oil significantly decreased the number of protozoa (P<0.05). The methane volume fraction in all groups was decreased compared with the control group (P<0.05). It is concluded that the supplementation of 100 mg/L cinnamon oil or spearmint oil may be beneficial to manipulate rumen microbial fermentation.

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