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http://dx.doi.org/10.7744/cnujas.2015.42.3.253

Effects of zinc, vitamin and selenium additives for improving meat quality on the growth performance, carcass characteristics and economic efficiency of holstein steers  

Cho, Won Mo (CJ cheiljedang animal biosciences research institute)
Lee, Sang Min (CJ cheiljedang animal biosciences research institute)
Publication Information
Korean Journal of Agricultural Science / v.42, no.3, 2015 , pp. 253-259 More about this Journal
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.
Keywords
Holstein steers; Feed efficiency; Growth performance; Carcass characteristics; Economic Efficiency;
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