Effects of Supplementing Coated Vitamin C+E with Cottonseed on Rumen Fermentation and Growth Performance and Blood Metabolites in Hanwoo Steers Fed Fermented Feedstuff

발효사료에 대한 보호처리한 Vitamin C+E 및 면실의 첨가가 반추위 발효특성과 거세한우의 육성성적 및 혈액성상에 미치는 영향

  • 박병기 (축산연구소) ;
  • 홍병주 (강원대학교) ;
  • 김창혁 (강원대학교) ;
  • 라창식 (강원대학교) ;
  • 신종서 (강원대학교)
  • Published : 2006.12.31


This study was conducted to examine the effects of supplementing coated vitamin C+E with cottonseed on rumen fermentation and body weight gain, blood metabolites and hormone concentrations in Hanwoo steers fed fermented feedstuff. Experiments were done with two treatment groups, T1 without any supplements and T2 supplemented with coated vitamin C+E and cottonseed. Ruminal pH was lower in T2 than in T1 at 3h after morning feeding (p<0.05), but was higher in T2 than in T1 at 6 and 9h after morning feeding (p<0.05). Ruminal ammonia concentration was higher in T2 than in T1 for 12h after morning feeding (p<0.05). Concentrations of acetate, propionate, butyrate and total-VFA were higher in T2 than in T1 at 3h after morning feeding (p<0.05), but were lower in T2 than in T1 at 9 and 12h after morning feeding (p<0.05). Average daily gain and concentrations of blood metabolites and hormones between T1 and T2 were similar. Results indicate that supplementation of coated vitamin C+E and cottonseed to fermented feedstuff affects on ruminal pH, ammonia and VFA. But it has no influences on body weight gain and concentrations of blood metabolites and hormones in Hanwoo steers.


Coated vitamin C+E;Cottonseed;Hanwoo;Rumen fermentation;Blood metabolites


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