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http://dx.doi.org/10.5187/JAST.2007.49.6.801

Effects of Dietary Barley on the Growth Performance and Carcass Characteristics in Hanwoo Steers  

Chang, S.S. (National Institute of Animal Science, RDA)
Oh, Y.K. (National Institute of Animal Science, RDA)
Kim, K.H. (National Institute of Animal Science, RDA)
Hong, S.K. (National Institute of Animal Science, RDA)
Kwon, E.G. (National Institute of Animal Science, RDA)
Cho, Y.M. (National Institute of Animal Science, RDA)
Cho, W.M. (National Institute of Animal Science, RDA)
Eun, J.S. (CJ Corp.)
Lee, S.C. (Ministry of Agriculture and Forestry)
Choi, S.H. (Chungbuk National University)
Song, M.K. (Chungbuk National University)
Publication Information
Journal of Animal Science and Technology / v.49, no.6, 2007 , pp. 801-818 More about this Journal
Abstract
This study was carried out to determine the effects of processing methods of barley as a proper source of grain in diets of Hanwoo on fermentation pattern in the rumen fluid and digestibility of the diets, the growth performance and carcass characteristics of Hanwoo. The degree of ruminal pH change in the cows fed diets of the Corn(corn basis) and GDRB(ground and dry-rolled barley) tended to be greater than those in the cows fed other two diets (ground barley, GB and dry-rolled barley, DRB). The diet of GDRB showed the lowest ruminal pH(5.5), indicating the rapid degradation of the diet in the rumen. Although ammonia concentration was not affected by diet, the GR and DBR diets maintained the low concentrations of ruminal ammonia compared with other two treatments. And the effects of feeding processed barley grain on body weight gain and meat quality of Hanwoo steers were as follows. Steers fed DRB diet had the highest body weight, 683.0kg at 28 months old, while those fed the GDRB showed the lowest body weight, 653.3kg. The average daily gain(ADG) was similar between the steers fed Corn and GR throughout the whole period, but the GDRB showed the lowest ADG. The steers fed the DRB showed the significant increase in ADG(0.89kg/d from 19 to 23 months old and 0.43kg/d from 24 to 28 months old) compared with those fed other diets. Feeding diets containing corn and/or barley did not influence live body weight, cold carcass weight, carcass yield, back-fat thickness and carcass grade of Hanwoo steers.
Keywords
Hanwoo steers; Barley; Beef quality;
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