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Effects of Organic Selenium Mix on the Performance, Carcass Characteristics, Tissue Selenium Distribution, and Economic Value in Finishing Hanwoo Steers

유기셀레늄 혼합제 급여가 비육말기 거세한우의 성장, 도체성적, 체내 셀레늄 분포 및 경제성에 미치는 영향

  • Kim, D.K. (College of Life Science and Natural Resources, Sang Ji University) ;
  • Jung, D.U. (College of Life Science and Natural Resources, Sang Ji University) ;
  • Sung, H.G. (College of Life Science and Natural Resources, Sang Ji University)
  • 김동균 (상지대학교 생명자원과학대학) ;
  • 정다운 (상지대학교 생명자원과학대학) ;
  • 성하균 (상지대학교 생명자원과학대학)
  • Published : 2005.12.31

Abstract

This study fulfilled to investigate the feed efficiency, tissue selenium distribution, carcass characteristic and economic value in finishing Hanwoo steers fed organic selenium mix (OSM) which included seleno-yeast, rumen culture and other microbial supplements. Forty five finishing Hanwoo steers were tested for 4 months dividing to three feeding groups: OSM add as 0.5 ppm Se of DM feeds (0.5 ppm OSM), OSM enriched add as 1.0 ppm Se of DM feeds (1.0 ppm OSM) and basal diet without OSM (control). The total weight gains, the average daily gains and the feed intakes were not differ in treatments (p > 0.05). No differences (p > 0.05) were noted for hot carcass weight, loin eye area, backfat thickness, meat yield index, meat color, fat color, tenderness and maturity. However, the 1.0 ppm OSM showed better performances for feed requirement, TDN per gain, meat yield grade and meat quality grade compared to other groups. Tissue selenium distribution was increased by organic selenium feeding: higher Se concentration in liver and rump of 0.5 ppm OSM (p < 0.05), and kidney, liver, sirloin and rump of 1.0 ppm OSM (p < 0.05) than the tissues of control group. Generally, tissue selenium was the highest value in 1.0 ppm OSM and showed higher concentrate in order; kidney, liver, sirloin and rump. The income over feed cost was 1.06-fold higher in 1.0 ppm OSM than control group. In conclusion, organic selenium mix supplementation and its amounts were not influenced to feed intake, body gain and carcass characteristic but significantly increased tissue selenium. Therefore, these results suggest that finishing Hanwoo steer fed an enriched organic selenium mix with proper probiotics is able to produce “high-Se” beef as high bioavailable form as well as create a beneficial opportunity on Hanwoo farm.

Keywords

Organic selenium;Seleno-yeast;Probiotics;Rumen culture;Hanwoo steers

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