Seamustard (Undaria pinnatifida) Improves Growth, Immunity, Fatty Acid Profile and Reduces Cholesterol in Hanwoo Steers

  • Hwang, J.A. (Department of Animal Science and Technology, Sunchon National University) ;
  • Islam, M.M. (Department of Animal Science and Technology, Sunchon National University) ;
  • Ahmed, S.T. (Department of Animal Science and Technology, Sunchon National University) ;
  • Mun, H.S. (Department of Animal Science and Technology, Sunchon National University) ;
  • Kim, G.M. (Department of Animal Science and Technology, Sunchon National University) ;
  • Kim, Y.J. (Department of Animal Science and Technology, Sunchon National University) ;
  • Yang, C.J. (Department of Animal Science and Technology, Sunchon National University)
  • Received : 2014.01.29
  • Accepted : 2014.04.10
  • Published : 2014.08.01


The study was designed to evaluate the effect of 2% seamustard (Undaria pinnatifida) by-product (SW) on growth performance, immunity, carcass characteristics, cholesterol content and fatty acid profile in Hanwoo steers. A total of 20 Hanwoo steers (ave. 22 months old; 619 kg body weight) were randomly assigned to control (basal diet) and 2% SW supplemented diet. Dietary SW supplementation significantly (p<0.05) improved average daily gain and gain:feed ratio as well as serum immunoglobulin G concentration. Chemical composition and quality grade of meat and carcass yield grades evaluated at the end of the trial were found to be unaffected by SW supplementation. Dietary SW significantly reduced meat cholesterol concentration (p<0.05). Dietary SW supplementation significantly reduced the myristic acid (C14:0) and palmitoleic acid (C16:ln-7) concentration, while SW increased the concentration of stearic acid (C18:0) and linolenic acid (C18:3n-3) compared to control (p<0.05). Dietary SW supplementation had no effect on saturated fatty acids (SFA), unsaturated fatty acids, poly unsaturated fatty acid (PUFA) or mono unsaturated fatty acid content in muscles. A reduced ratio of PUFA/SFA and n-6/n-3 were found in SW supplemented group (p<0.05). In conclusion, 2% SW supplementation was found to improve growth, immunity and fatty acid profile with significantly reduced cholesterol of beef.


Seaweed;Immunity;Carcass Quality;Cholesterol;Fatty Acid;Hanwoo Steer


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