Effects of Agricultural By-Product Feeds on Growth and Carcass Characteristics of Korean Native Steer
2008
Lee, S.M. (Sangju National University, Sangju, Republic of Korea), E-mail: [email protected]
This study was carried out investigate the effects of dietary supplementation of agricultural by-product feed (persimmon-pell + barley bran + fermented rice bran + activated carbon) on calves disease, growth and carcass characteristics of Korean native steer. A total of twenty Korean native steer were allocated into four feeding group and assigned to four dietary treatments: Control (normal concentrate as a basal diet), T1 (1% addition of by-product feeds), T2 (3% addition of by-product feeds) and T3 (5% addition of by-product feeds). The calf diarrhea was the highest at Control, while T3 was the lowest. The breath disease was the lowest at T2, occurrence with diarrhea and breath disease was the highest at Control. The daily gain was orderly ranked as T2(0.76kg) greater than T1(0.7kg), T3(0.70kg) greater than Control(0.67kg). The back fat thickness was orderly ranked as T2 greater than T3 greater than Control greater than T1, eye muscle area was orderly ranked as T3 greater than T1 greater than Control greater than T2. Grade of meat quantity was the highest at T1(2.3), but fat color, firmness and maturity tends to have a similar result. The marbling score and quality grade of T2 were the highest at 5.0 and 3.5, respectively. Based on the study, agricultural by-product feeds are able to many used for various purposes at disease reduce, increment of meat quantity and improvement of quality grade.
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