Comparison of Rumen Fermentation Characteristics and Methane Production of Different Breeds of Beef Cattle by Artificial Rumen Gas Production Method

  • ZHU Yixiao ,
  • WANG Zhisheng ,
  • HU Rui ,
  • WANG Xueying ,
  • ZHOU Xinyu ,
  • DAI Qindan ,
  • CAO Guang ,
  • MA Jian ,
  • ZHANG Xiangfei ,
  • ZOU Huawei ,
  • PENG Quanhui ,
  • XUE Bai ,
  • WANG Lizhi
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  • Key Laboratory of Low Carbon Culture and Safety Production in Cattle in Sichuan, Animal Nutrition Institute of Sichuan Agriculture University, Chengdu 611130, China

Received date: 2020-02-07

  Online published: 2020-08-13

Abstract

This experiment was conducted to compare the differences in rumen fermentation characteristics, methane (CH4) production and other greenhouse gases of different breeds of beef cattle by artificial rumen gas production method. Each five healthy Maiwa yaks, Chinese Holstein steers, cattle-yaks (Tibetan yellow cattle×Maiwa yaks) with similar age (24-month-old) were selected and fed with the same diet for 42 days in the same house feeding environment, and then the rumen fluid of each breed were collected for in vitro fermentation with same diet substrate, the in vitro fermentation gas production, gas parameters, fermentation parameters and yield of CH4, hydrogen (H2) and carbon dioxide (CO2) were compared. The results showed as follows:1) the gas production of each group showed an upward trend with fermentation time increased. The slowly fermentation fraction gas production and potential gas production of cattle-yak group were significantly higher than those of Maiwa yak group and Chinese Holstein steer group (P<0.05), while the rapidly fermentation fraction gas production and gas production rate of Maiwa yak group and Chinese Holstein steer group were significantly higher than those of cattle-yak group (P<0.05). 2) The acetate/propionate at fermentation 24 and 48 h of Chinese Holstein steer group was significantly higher than that of other 2 groups (P<0.05), the contents of propionate and total volatile fatty acid (TVFA) at fermentation 48 h of Maiwa yak group were significantly higher than those of other 2 groups (P<0.05), and the contents of acetate, propionate, butyrate and TVFA at fermentation 72 h of Maiwa yak group were significantly higher than those of other 2 groups (P<0.05). Meanwhile, the theological maximum productions of acetate, propionate, butyrate and potential growth rates of acetate, butyrate production of Maiwa yak group were significantly higher than those of other 2 groups (P<0.05). 3) The fermentation liquid pH of each group was in the normal range. The fermentation liquid pH at fermentation 24 and 48 h of cattle-yak group and Maiwa yak group was significantly higher than that of Chinese Holstein steer group (P<0.05), the fermentation liquid ammonia nitrogen content at fermentation 24, 48 and 72 h of Maiwa yak group was significantly higher than that of other 2 groups (P<0.05), and the fermentation liquid microbial protein content at fermentation 48 and 72 h of Maiwa yak group was significantly higher than that of other 2 groups (P<0.05). In conclusion, the rumen microorganisms have different fermentation capabilities among Maiwa yaks, Chinese Holstein steers and cattle-yaks.

Cite this article

ZHU Yixiao , WANG Zhisheng , HU Rui , WANG Xueying , ZHOU Xinyu , DAI Qindan , CAO Guang , MA Jian , ZHANG Xiangfei , ZOU Huawei , PENG Quanhui , XUE Bai , WANG Lizhi . Comparison of Rumen Fermentation Characteristics and Methane Production of Different Breeds of Beef Cattle by Artificial Rumen Gas Production Method[J]. Chinese Journal of Animal Nutrition, 2020 , 32(8) : 3906 -3916 . DOI: 10.3969/j.issn.1006-267x.2020.08.049

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