RESEARCHPAPER

Evaluation of Rumen Degradation Characteristics of Common Roughages for Dairy Buffaloes by Nylon Bag Method

  • GUO Taiqing ,
  • HE Shaoying ,
  • WANG Rongjiao ,
  • HE Shichun ,
  • DAI Sifan ,
  • WANG Zibei ,
  • WU Dongwang ,
  • YU Cui ,
  • ZHOU Jing ,
  • MAO Huaming ,
  • AN Qingcong
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  • 1. Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China;
    2. Panzhihua Academy of Agricultural and Forestry Sciences, Panzhihua 617000, China

Received date: 2021-12-06

  Online published: 2022-06-14

Abstract

In order to evaluate eight common used roughages(rice straw, sugarcane shoot silage, whole corn silage, sweet-crisp corn silage, king grass, elephant grass, alfalfa hay and oat straw) degradation characteristics in the rumen of dairy buffaloes, this experiment was conducted to determine the dry matter (DM), organic matter (OM) and crude protein (CP) contents of roughages using feed proximate analysis, and their neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents were determined by the Van Soest fibre analysis method, and select three crossbred dairy buffaloes fitted with permanent ruminal fistulae as test animals to determine the rumen degradation rate and degradation parameters of DM, CP, NDF and ADF of eight roughages by nylon bag technique. The results showed as follows:1) the CP content in alfalfa hay was significantly higher than that in other roughages (P<0.05), and the NDF content was significantly lower than that in other roughages (P<0.05). The ADF content in sweet-crisp corn silage was the lowest, and significantly lower than that in other roughages (P<0.05). The CP content in rice straw was significantly lower than that in other roughages (P<0.05), and the NDF content was significantly higher than that in other roughages (expect for sugarcane shoot silage) (P<0.05). 2) The effective degradation rate of DM was in the order of sweet and crisp corn silage>alfalfa hay>whole corn silage>oat straw>elephant grass>sugarcane shoot silage>king grass>rice straw, with significant differences among the roughages (P<0.05). The CP effective degradability of rice straw was significantly lower than that of the other roughages (P<0.05). The NDF and ADF effective degradability of sweet-crisp corn silage were significantly higher than those of the part of roughages (P<0.05). The ADF effective degradability of sugarcane shoot silage was significantly lower than that of the other roughages (P<0.05). In conclusion, sweet-crisp corn silage has the best degradation characteristics and highest feeding value in the rumen of dairy buffaloes. Rice straw and sugarcane shoot silage have the lowest available value.

Cite this article

GUO Taiqing , HE Shaoying , WANG Rongjiao , HE Shichun , DAI Sifan , WANG Zibei , WU Dongwang , YU Cui , ZHOU Jing , MAO Huaming , AN Qingcong . Evaluation of Rumen Degradation Characteristics of Common Roughages for Dairy Buffaloes by Nylon Bag Method[J]. Chinese Journal of Animal Nutrition, 2022 , 34(6) : 3699 -3709 . DOI: 10.3969/j.issn.1006-267x.2022.06.031

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