Effects of Activated Charcoal on in vitro Ruminal Fermentation Characteristics and Nutrient Disappearances

사료에 대한 활성탄의 첨가가 in vitro 시험시의 발효성상 및 영양소 소실율에 미치는 영향

  • Lee, B.D. (Division of Animal Science and Resources, College of Agriculture, Chungnam National University) ;
  • Lee, S.K. (Division of Animal Science and Resources, College of Agriculture, Chungnam National University) ;
  • Lee, K.D. (Dept. of Animal Science, Woosong Information College)
  • 이봉덕 (충남대학교 농과대학 동물자원학부) ;
  • 이수기 (충남대학교 농과대학 동물자원학부) ;
  • 이기동 (우송정보대학 동물과학과)
  • Published : 1999.12.30

Abstract

An in vitro study was conducted to examine the effects of the addition of activated charcoal (AC) on the ruminal fermentation characteristics, nutrient disappearance, and ruminal gas production. AC was added at the levels of 0.00, 0.25, and 0.50 % to each of the four types of diets (roughage/concentrate ratio : 8/2, 6/4, 4/6 and 2/8), respectively. Although not significant, ruminal pH tended to increase by adding AC, and as the concentrate level increased, ruminal pH decreased (P<0.05). Acetate concentration and acetate/propionate molar ratio tended to decrease in AC diets. but molar % of propionate tended to increase by the addition of AC. Ruminal degradation of dry matter, crude protein, NDF, ADF, and hemicellulose in AC diets tended to increase than in non-AC diet, however, no tendency in ruminal degradation of crude fat was observed. As the concentrate level increased, rumunal degradation of dry matter and nutrients in AC diets increased significantly(P<0.05). Ruminal gas production tended to decrease in the 0.50 % AC diets, however, it tended to increase in high roughage diets. Although there appeared some beneficial effects in adding AC to ruminant diets in this study, more works should be done with AC before we can make clear conclusion on the use of AC in the ruminant diets.

Acknowledgement

Supported by : 충남대학교