Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effects of zinc, vitamin and selenium additives for improving meat quality on the growth performance, carcass characteristics and economic efficiency of holstein steers

아연, 비타민과 셀레늄의 첨가가 홀스타인 거세우의 발육, 도체특성 및 경제성에 미치는 영향

  • Cho, Won Mo (CJ cheiljedang animal biosciences research institute) ;
  • Lee, Sang Min (CJ cheiljedang animal biosciences research institute)
  • 조원모 (농촌진흥청 국립축산과학원) ;
  • 이상민 (농촌진흥청 국립축산과학원)
  • Received : 2015.06.18
  • Accepted : 2015.09.02
  • Published : 2015.09.30
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Abstract

This study was conducted to investigate the effect of different additives on the growth performance, feed efficiency and carcass characteristics in Holstein steers during 18month fattening periods. Twenty four Holstein steers, 5months of age and 176.6kg, were randomly allocated to 3 experimental groups 8 animals each for 18-months feeding trial. The groups were control (not additive), T1 (fed zinc, Vitamin C) and T2 (fed zinc, Vitamin C, Vitamin B6 and Selenium). According to feeding additives, final weight was not significantly different among the treatment groups, tended to be high at T2 group (827kg) compared to the other groups. Average daily gain was not different among the treatment groups during the experimental periods, but T2 group was significantly greater than T1 group in growing stage (p<0.05). The feed additives had no effects on DMI during experimental periods. Feed conversion ratio of T1 group in growing stage was significantly higher than those of other groups (p<0.05), average feed conversion ratio was tend to be decreased at T2 group rather compared with other groups. In the results of yield traits, carcass weight were relatively higher in T2 group than other groups (p<0.05). Rib-eye area, back fat thickness and yield index were similar between groups. In quality traits, marbling, meat color, fat color, texture and maturity were not significantly different among the groups. In economic efficiency, income was highest at T2 group as 91~393 thousand won among 3 groups.

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