Feed Science and Technology

Effects of Thiamine on Concentrations of Volatile Fatty Acids and Lactate in Culture Medium of High Concentrate Substrate after in Vitro Rumen Fermentation

  • ZHANG Jun ,
  • WANG Mengzhi ,
  • HAO Zhimin ,
  • YU Lihuai ,
  • WANG Hongrong
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  • 1. Yangzhou Yangda Kangyuan Dairy Co., Ltd., Yangzhou 225009, China;
    2. Yangzhou University Experimental Farm, Yangzhou 225009, China;
    3. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China

Received date: 2013-08-19

  Online published: 2014-01-27

Abstract

This experiment was conducted to study the effects of thiamine on concentrations of volatile fatty acids and lactate in culture medium of high concentrate substrate after in vitro rumen fermentation. Four healthy Holstein dairy cows equipped with permanent ruminal cannulas were used to provide rumen fluid. The fermentation substrate was consist of casein, wheat starches, soluble starches, pectins, xylan, milled filter paper and carboxymethyl cellulose, and the concentrate to forage ratio was 6:4. The supplemental levels of thiamine were 0, 60, 120, 180 and 240 mg/kg, respectively. The results showed as follows: generally, the lactate concentration in culture medium was decreased by thiamine under the condition of high concentrate substrate, and 180 mg/kg group showed the best effect. It was also observed that 180 mg/kg group increased total volatile fatty acid concentration but decreased the ratio of acetate to propionate. It is concluded that the supplemental level of 180 mg/kg thiamine can stabilize rumen microbial fermentation of high concentrate substrate with 6:4 of the concentrate to forage ratio.

Cite this article

ZHANG Jun , WANG Mengzhi , HAO Zhimin , YU Lihuai , WANG Hongrong . Effects of Thiamine on Concentrations of Volatile Fatty Acids and Lactate in Culture Medium of High Concentrate Substrate after in Vitro Rumen Fermentation[J]. Chinese Journal of Animal Nutrition, 2014 , 26(2) : 489 -495 . DOI: 10.3969/j.issn.1006-267x.2014.02.026

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