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반가축영양 : 거세한우에 있어 점토광물질 첨가 급여가 발육 및 면역기능에 미치는 영향
조원모,김준식,강수원,백봉현,김용국 한국동물자원과학회 2001 한국축산학회지 Vol.43 No.2
The study was conducted with 24 Hanwoo steers(4 month of age, mean body weight 109.4㎏ ) for 6 months to examine the effects of dietary supplements of clay minerals on the growth performance and immunity. The Hanwoo steers were randomly allotted into 4 treatments according to the dietary supplements of clay minerals(basal diet, basal diet+5% illite, bentonite, kaolinite). Concentrates were fed at 1.5% level of body weight and grass hay were fed ad libitum during entire experimental period and the results obtained were as follows : Average daily gains throughout the experimental period of 4 months to 9 months of age were higher for illite- (0.70㎏) and bentonite- (0.69㎏) groups than for kaolinite(0.67㎏)-. and control group (0.65㎏), however, no statistical significance were found. Average daily intakes of concentrates were 2.35, 2.50, 2.39, and 2.39㎏ , while those of hay were 3.34, 2.91, 3.17. and 2.96㎏ for control. illite-, bentonite- and kaolinite-supplemented groups, respectively. No statistical significance. however, was found. The proportions of CD(cluster of differentiation)2. CD4. B cell(B-lymphocyte), and monocytes were higher in illite-supplemented group than in control group, while those of CD4. CD8. N cell(N-lymphocyte, non T/non B cell), and monocytes were higher in kaolinite-supplemented group than in control group.
조원모,기광석,정하연,강수원,김준식,백봉현,김용국 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.1
본 연구는 거세한우 육성우에 대한 황토 첨가급여가 발육에 미치는 효과를 구명하고자 발육능력, 사료섭취량을 규명한 바 아래와 같은 결과를 얻었다. 전 시험기간 동안의 평균 일당증체량은 대조구와 황토급여구가 각각 0.91㎏과 0.87㎏/day로 대조구가 높은 것으로 나타났지만 유의성은 인정되지 않았다. 사료섭취량은 대조구와 황토급여구 모두 평균 일일 두당 농후사료 섭취량이 2.42㎏이었으나, 건초섭취량에 있어서는 각각 3.02와 3.14㎏으로 황토급여구가 다소 높은 경향으로 나타났다. The study was conducted to investigate the effect of dietary supplements of reddish clay on the growth performance in growing Hanwoo steers. A total of 8 calves was allocated into 2 feeding groups, control(basal diet) and treatment(basal diet plus ad libitim Reddish clay) for Hanwoo steers. This study was carried out for 5 months with a total of 8 calves. The results obtained in the present studies are summarized as follows : Average daily gains throughout the experimental period of 4 months to 9 months of age were 0.91 and 0.87㎏ for control group and reddish clay-supplemented group, respectively, however, no statistical significances were found. Average daily intake of concentrates was 2.42㎏ for each group, while that of hay tended to be higher in reddish clay-supplemented group(3.14㎏) than in control group(3.02㎏).