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겨울철 飼育形態가 HOLSTEIN 育成牛의 飼料 攝取, 增體率 및 經濟性에 미치는 影響
金鍾敏,文哲成 건국대학교 1992 대학원 학술논문집 Vol.35 No.-
This experiment was carried out to investigate the effects of the housing system on the weight gain and economical profit of the growing Hostein heifers. Twenty-four heads of heifer were assigned to the three different kinds of housing systems(enclosed barn, open front loose barn and topless feedlot) for 51 days during the winter time. The results are as follows: 1.Dry matter intake of heifers was 5.63kg in the enclosed barn, 6.2kg in the open-front loose barn and 6.146kg in the topless feedlot. 2.The body weight gain was the highest in the group of the enclosed barn followed by topless feedlot and open-front loose barn(P<0.01) 3.Feed conversion was the hightest when heifers kept in the enclosed barn, intermediate in the topless feedlot and worst in the open-front loose barn. 4.It was also noted that the feed cost per 1kg of body weight gain was the least in the enclosed barn, intermediate in the topless feedlot and the highest in the open-front loose barn. In conclusion, the most favorable result was obtained when heifers kept in the enclosed barn system, followed by topless feedlot and loose barn.
알팔파의 사료가치연구 1 . 알팔파 가공시 영양가 변화에 관한 연구
차영호,문철성,강태홍,김강식 ( Y . H . Cha,C . S . Moon,T . H . Kang,K . S . Kim ) 한국축산학회 1990 한국축산학회지 Vol.32 No.8
In order to investigate feed values due to processing form of alfalfa, this study was carried out with 4 heads of sheep and Korean Native Cattle, respectively, for pellet, cube and hay of alfalfa imported in the year of 1984 and 1988. The results obtained were as follows; 1. Proximate composition Crude protein content was highest(24.66) in cube but lowest(17.60%) in pellet. crude fiber content was 29.0 and 17.82%, respectively, in pellet and cube, but NFE contents similar in all forms. 2. Cell wall constituent content ADF and NDF contents were 49.42 and 37.41%, respectively. in pellet but 31.15 and 22.03%, in cube. 3. Amino acid and mineral composition Contents of cystine and methioine were lowest in all forms. Ca, P and K were similar in all forms. Na content(%) was highest(0.45) in hay but lowest(0.05) in pellet. 4. Digestibility and digestible nutrientIn order to investigate feed values due to processing form of alfalfa, this study was carried out with 4 heads of sheep and Korean Native Cattle, respectively, for pellet, cube and hay of alfalfa imported in the year of 1984 and 1988. Digestibilities and nutrient values were high in cube. Dry mater digestibility and TDN value were 67.06 and 62.51%, respectively, in cube and 55.76 and 55.65% in pellet. 5. Because nutrient values of alfalfa are varied according to cutting stages and cultivating area such as above results, It is required to utilize alfalfa with evaluating exact feed components of alfalfa and considering feed cost between alfalfa and others.
납 , 수은 및 카드뮴이 백서 좌골신경에 미치는 영향에 관한 형태학적 연구
정종훈,문연자,문철성,유태전,최민규,정연태 ( Chong Hoon Chung,Yeun Ja Mun,Chul Sung Moon,Tae Jeon Yoo,Min Kyu Choi,Yeun Tai Chung ) 한국환경생물학회 1991 환경생물 : 환경생물학회지 Vol.9 No.2
In order to evaluate the effect of some heavy metals on the sciatic nerve of the rat, light and electron microscopic studies were performed to examine the fine structural changes of sciatic nerve of the rat after administration of lead nitrate, mercuric chloride and cadmium chloride, respectively. Rats were received 200㎎/ℓ of each heavy metal(Pb, Hg and Cd) solution ad libitum for 3 months and then, they were sacrificed. The results were summarized as follows; 1. Lead nitrate-treated group showed the decreased diameter of nerve fibers and axons, and mercuric chloride-treated group showed the decrement of number of nerve fibers per unit area, remarkably. 2. g ratio (d/D) measured in the heavy metal-treated groups were 0.75 in Pb, 0.82 in Hg and 0.85 in Cd respectively, compared to the 0.78 in control group. 3. Electron microscopy of lead nitrate-treated group showed the degeneration of myelin sheath, and the destructive change of membrane of Schwann cell. 4. The severe degeneration of myelin sheath and vacuoles in axon were observed in mercuric chloride-treated group. 5. In cadmium chloride-treated group, the degeneration of myelin sheath and axon, and Schwann cell were observed. 6. Degenerative changes of axon were highest in cadmium chloride-treated group(7.4%) and also those of myelin sheath were highest in mercuric chloride-treated group(23.7%) among the experimental groups. These findings indicate that lead, mercury and cadmium produce the morphological changes in the diameters of nerve fiber and axon, and thickness of myelin sheath of sciatic nerve.
볏짚의 요소처리 수준이 한우의 반추위(反芻胃)에서의 영양소 분해율에 미치는 영향
정태영,김종민,문철성 한국낙농학회 1993 韓國酪農學會誌 Vol.15 No.2
본 실험은 볏짚의 尿素 添加水準(0, 1, 2, 3 및 4%)과 培養時間이 韓牛의 소화율에 미치는 영향을 알아보기 위하여 乾物消失率, ADF, cellulose 消失率, 단백질消失率 및 NH₃-N 등을 측정하였는데 그 결과는 다음과 같다. 1. 尿素의 添加水準이 증가함에 따라 乾物消失率은 有意하게 증가하였으며(P<0.05), 첨가수준별로 比較했을 때는 거의 비슷한 水準을 보여주었다. 2. 蛋白質 消失率은 尿素 첨가수준이 증가함에 따라 有意하게 증가하였다(P<0.05). 3. ADF와 cellulose 消失率은 尿素 첨가수준이 증가함에 따라 有意하게 증가하였으며(P<0.05), ADF 消失率이 cellulose 消失率보다 낮은 경향을 보여주었다. 4. NH₃-N 濃度는 尿素의 添加水準이 증가함에 따라 有意하게 增加하였다(P<0.05). This experiment was conducted to investigate the effect of urea treatment on the of nutritive value of rice straw. The levels of urea treated to the rice straw were 0(C), 1(Tl), 2(T2), 3(T3) and 4(T4)% on air dry basis. The in situ technique was used to estimate the disappearance of dry matter, crude protein, acid detergent fiber, cellulose and also the concentrations of NH₃-N of levels were measured in the fistulated rumen of Korean native cattle. The results obtained were as follows : 1. Increasing urea levels in rice straw resulted in increased in situ disappearances of dry matter of the treated rice straw (P<0.05). 2. The crude protein disappearances of treated rice straw with urea were increased significantly(P< 0.05 ) as urea levels increased. 3. Increasing urea levels in rice straw resulted in the increased disappearances of ADF and cellulose of rice straw(P<0.05). 4. The concentrations(㎎/100㎖) of ruminal NH₃-N were increased as urea levels in rice straw increased (P< 0.05).