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日粮中添加玉米油对肉牛瘤胃发酵的影响

李凤学 赵广永 杨雅芳

中国畜牧杂志2001,Vol.37Issue(1):16-17,2.
中国畜牧杂志2001,Vol.37Issue(1):16-17,2.

日粮中添加玉米油对肉牛瘤胃发酵的影响

Effects of Corn Oil on the Rumen Fermentation in Cattle

李凤学 1赵广永 1杨雅芳1

作者信息

  • 1. 中国农业大学动物科技学院,
  • 折叠

摘要

Abstract

Three adult hybrid cattle fitted with rumen cannulas in a 3×3 Latin square design, were fed with diets based on rice straw and mixed concentrates (2:1) and added with 0%,4%or8%corn oil. The rumen fluid samples were collected in 2,4,6 and 8 h after morning feeding. Rumen pH was measured, and NH3-N and VFA were determined. The results show that addition of 4% or 8% corn oil did not influence the rumen pH and NH3-N concentration (P>0.05). Addition of 4% corn oil did not influence VFA (P>0.05), but 8% corn oil significantly decreased the total VFA and acetic acid concentration, respectively (P<0.05). The addition of less than 8% corn oil did not influence the propionic concentration and butyric acid concentration (P>0.05). Addition of 4% and 8% corn oil significantly decreased the ratio of acetic to propionic acid from 3.75 to 3.26 and 3.14, respectively (P<0.05).

关键词

玉米油/瘤胃发酵/肉牛

分类

农业科技

引用本文复制引用

李凤学,赵广永,杨雅芳..日粮中添加玉米油对肉牛瘤胃发酵的影响[J].中国畜牧杂志,2001,37(1):16-17,2.

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