Journal of Animal Environmental Science (한국축산시설환경학회지)
- Volume 5 Issue 3
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- Pages.157-170
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- 1999
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- 1226-0274(pISSN)
Effect of Scoria, Quartz Porphyry and Oak Charcoal Powder Feeding on the Meat Quantity and Quality of Fattening Cross Bred Hanwoo Bulls
점토광물 급여가 한우교잡우의 산육능력 및 육질에 미치는 영향
Abstract
This study was conducted to investigate the effects of Scoria, Quartz porphyry and Oak charcoal powder feeding by 1% level of concentrate on the fattening cross bred bulls(5/8 Korean Native Cattle, 2/8 Charolais, 1/8 Brahman germ plasma) Feeding trial was conducted with 4 treatment groups which were T1(Full feeding of concentrate and roughage for 12 months), T2(T1 and Scoria addition), T3(T1 and Quartz porphyry addition) and T4(Oak charcoal addition) for 360 days, consisting of 32 heads whose initially weights were about 299.7kg. The results obtained are summarized as follows; 1. During the over-all period, average daily gains by T3, T4, T2 and T1 were 1.024, 0.987, 0.977kg and 0.964, respectively, without a significant difference by treatments. 2. Concentrate intakes per body weight and TDN intakes required per unit of kilogram gain were lower in addition agent groups than in control, and in all the treatments feed efficiency was higher at early stage for 360 fattening day than at end stage. 3. Carcass weight, dressing percent, back-fat thickness and loin eye muscle area by treatments were 330.9 to 348.4kg(average 340.3kg), 55.2~56.2(average 55.8%), 0.41~0.55(average 0.46cm)and 76.0~80.9
Keywords
- Beef cattle;
- Scoria;
- Quartz porphyry;
- Oak charcoal powder;
- Feeding effect;
- Meat quality grade;
- Income