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Effect of Feed Type on Feed Efficiency and Carcass Characteristics of Hanwoo Steers  

Lee, Gui-Ye (Dept. of Animal Sci. and Biotechn., Gyeongnam National University of Science and Technology)
Cho, Woong-Gi (Dept. of Animal Sci. and Biotechn., Gyeongnam National University of Science and Technology)
Moon, Yea-Hwang (Dept. of Animal Sci. and Biotechn., Gyeongnam National University of Science and Technology)
Publication Information
Journal of agriculture & life science / v.45, no.4, 2011 , pp. 95-103 More about this Journal
Abstract
Ninety five Hanwoo steers averaging 226kg of body weight were used to investigate the effect of dietary type on feed efficiency, carcass characteristics and economical analysis in Hanwoo feeding over 22 months. Treatments were composed of commercial formula feed (formula feed), TMR and Fermented-TMR (F-TMR). Intakes of dry matter and TDN were greater in the F-TMR than the other treatments during each growing and fattening phase (p<0.05). Although daily body gain of the F-TMR was lowest during the growing phase, but was 48% greater than those of other treatment during the finishing phase (p<0.05). Feed efficiency of the F-TMR was maintained constantly during whole growing and fattening phases. Carcass weight and rib-eye area of the F-TMR were greatest (p<0.05) among treatments. However, meat yield index and the rate of grade A in meat yield were highest in the formula feed having the thinnest back fat. Marbling score was hugely (p<0.05) increased when steers fed F-TMR, and therateofgrade 1+andoverinmeatqualitywas96%intheF-TMR. Although feed cost in the F-TMR was increased by 40% compare to the formula feed, but net income was increased by 29% due to improvement of meat quality and body gain.
Keywords
Feed Type; Feed Efficiency; Carcass Characteristics; Hanwoo Steer;
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