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      • KCI등재

        육계의 성, 사육형태, 계절 및 절식시간에 따른 도체특성에 관한 조사연구

        홍준,이상진,김삼수,정선부,이규호,오세정,Hong, J.,Lee, S.J.,Kim, S.S.,Chung, S.B.,Lee, K.H,Oh, S.J. 한국가금학회 1990 韓國家禽學會誌 Vol.17 No.1

        본 연구는 육계와 육용오리의 도체특성을 비교하고 육계의 성, 사육형질, 계절 및 절식시간에 따른 도체율과 복강지방축적률을 조사하기 위하여 육계 240수와 육용오리 20수에 대한 도체조사기록을 이용하여 연구하였는바 그 결과를 요약하면 다음과 같다. 1. 육계와 육용오리의 도체률은 각각 65.43%와 66.79%였으며, 복강지방축적률은 육계가 육용오리가 비하여 현저하게 높았다. 2. 육계와 육용오리의 부분육 생산비율은 현저한 차이가 있었으며, 육계의 경우 부분육 생산비율은 다리, 가슴, 등, 날개 및 목의 순서로 높았다. 3. 육계의 도체율은 성별에 따라 차이가 없었으나 복강지방축적율은 암컷이 수컷에 비하여 현저하게 높았다. 4. 사육형태간에 도체율은 차이가 없었으나 복강지방축적율은 케이지가 평사에 비하여 다소 높은 경향이었다. 5. 사육계절간에도 도체율은 차이가 없었으나 복강지방축적률은 하계에 가장 높았고 동계에 가장 낮았다. 6. 절식ㆍ절수시간이 1시간 경과함에 따라 육계의 체중은 약0.28365%씩 감소하였으며, 도체율은 절식 6시간 후 가장 높았다. This studies were conducted to investigate the difference of carcass characteristics between chicken broiler and duck broiler and the carcass characteristics of chicken broiler by sex, rearing type, season and feed and water deprivation with 240 chicken broilers and 20 duck broilers. The results obtained are summerized as follows. 1. The carcass yields were 65.43% in chicken broiler and 66.78% in duck broiler. The abdominal fat pad of chicken broiler was higher than that of duck broiler. 2. There were differences in commercial cuts production percentages between chicken broiler and duck broiler, and the commercial cut of chicken broiler was produced from drumsticks and thighs, breast back, wings and neck in order. 3. Although there was little difference in carcass yields between male and female of broiler, the abdominal fat pad of male broiler was lower than that of female broiler. 4. The carcass yields in cage and floor type were not different, but the abdominal fat pad in cage was slightly higher than that in floor. 5. There was no difference in carcass yields among Spring, Summer, Autumn and Winter, but the abdominal fat pad was highest in Summer and lowest in Winter. 6. As feed and water deprivation time increased by one hour, live weight was decreased by 0.28365% , and the carcass yield was highest after 6 hours depribated feed and water.

      • KCI우수등재

        영양수준별 대추사료급여가 산란에 미치는 영향

        오봉국,오세정,김춘수 ( Bong K . Ohh,Sae J . Oh,Chun S . Kim ) 한국축산학회 1979 한국축산학회지 Vol.21 No.5

        Three Leghorn type and four brown egg type layers, 600 birds, were reared under three dietary restricted feeding systems and control during growing period (IO-20weeks of age)and also their productivities in laying period were observed from 8th June, 1977 to 1st March, 1978. Four different feeds were as follows : Control, High fiber feed containing much barley bran, Low protein feed consisting much amount of corn, and Barley (96%) feed. During rearing period this experiment was not observed significant differences among four treatments in viability but three restricted treatments showed less feed consumption and lower body gain due to lower quality of those feeds than control. And the feed requirement per unit body gain in barley treatment was observed especially low as reasonable re cult . In productivities followed by four different feeds during laying period, two restricted treatments, such as low protein and barley treatments except high fiber group, produced late their first egg, and all three restricted groups layed larger egg than control, which was indicated positive correlation between sexual maturity and egg weight. Production rate for short term until 48 weeks of age and laying intensity after peak production were greatly influenced by sexual maturity which was affected according to nutrition conditions of feed Therefore 79% and 75% of barley treatment in total production rate after peak production surpassed 7 and 3%, compared with control of white and coloured layers respectively. In this respects, this experiment found the most interested fact that restricted feed causing the change of fat tissues in growing chick could make efficient productivity, especially barley feed under Korea condition seemed to be able to increase egg production rate, lay large egg and require little feed intake All restricted layers consumed more feed and showed more body gain than control after feed restrictiction was cancelled at 20 weeks of age. The layers of barley treatment in low quality consumed 3.6g in white and 4.4g in coloured more than control in every day, being caused recover from unfavorable feed in growing. As shown above, restrict of feed quality in growing chick could meet with results of less feed consumption, higher egg production and larger egg resulted from laying intensity and delaying the first egg day contrast control. And in general tendency coloured layers seemed to be affected more variably than white in accordance with restricted treatment but 100% barley treatment of white and coloured layer during growing period were identified as the most efficient groups.

      • KCI우수등재
      • KCI우수등재

        XPD Analysis on the Cleaved GaAs(110) Surface

        이덕형(D. H. Lee),정재관(J. Chung),오세정(S. J. Oh) 한국진공학회(ASCT) 1993 Applied Science and Convergence Technology Vol.2 No.2

        X-선 광전자 분광법(XPD)을 이용하여 GaAs(110) 절개면의 결정구조를 이해하였다. 각 분해 X-선 분광법으로 GaAs(110) 면의 내각준위 Ga 및 As 3d의 스펙트럼을 얻어, 이 내각 준위의 세기 비율(intensity ratio)의 방위각과 편각에 따른 변화를 SSC(Single Scattering Cluster) 모델에서 얻은 회절패턴으로 곡선분석(fitting)하여 절개면의 재구성 구조(reconstruction geometry)를 얻었다. 이 절개면의 재구성된 값은 다른 실험의 결과와 비슷하였다. X-ray photoelectron diffraction (XPD) is used to characterize the crystallographically cleaved GaAs(110) surface. By using polar and azimuthal scans of the usual angle-resolved x-ray photoelectron spectroscopy, we get the reconstruction geometry of the clean GaAs(110) surface from the intensity ratio of Ga 3d and As 3d core-level peaks. The reconstruction parameters are determined by fitting the diffraction pattern with the single scattering cluster (SSC) model, and the results show similar tendencies to those obtained by other techniques.

      • KCI우수등재

        Broiler 사료의 유지첨가에 의한 사양시험과 경제성에 관한 연구

        권항기 ( H K Kwon ),김춘수 ( C S Kim ),오세정 ( S J Oh ) 한국축산학회 1972 한국축산학회지 Vol.14 No.4

        The experiments supported jointly by National Renderers Association, Far East Office and Korea Mixed Feed Association were conducted in three different poultry farms in or vicinity of Seoul, Korea. The objectives were to demonstrate the economic and nutritional value of using tallow as a feed ingredient in formulating the isocaloric and high energy broiler rations. It was also to determine the dietary level of tallow which is most feasible for the economy of broiler production in Korea. on an Isocaloric Basis The use of tallow to replace corn on an isocaloric basis upto 9 percent level did not improve the growth over the control chicks. Little significant difference was also observed in the feed efficiency of control group from those of the experimental groups of receiving 3, 6 and 9 percent tallow. This is also true for the values of among the experimental groups. Through the observations of these results, it is concluded that tallow as a feed ingredient can be added to the diet upto 9 percent level on an isocaloric basis without any deteriorating effects on it`s nutritive value. The addition of tallow to the place of corn on an isocaloric basis resulted in higher prices of the feeds of added tallow. Since little improvement on the feed efficiency was gotten by adding tallow, it is assumed that the economic broiler production is rather solely depended upon the price of tallow rather than the value of tallow itself. on a High Energy Basis On the contrary from that of isocaloric basis, all three experimental groups of receiving tallow are responded favorably over the control group. As for the weight at the end of 8 weeks of feeding, broilers receiving 7% tallow gained 10.0%, and 7.6% for the semibroilers over the control group. Cumulative feed efficiency for the broiler indicate that all the experimental groups receiving tallow improved to compare to that of control. For the groups receiving 5 and 7% tallow, the efficiency was 2.11 for the 5% and 2.04 for the 7% group compared to that of control 2.46 For the semibroilers, efficiency was 2.25 for the 5% and 2.21 for the 7% tallow compared to that of control 2.46. These differences from that of control were statistically significant. The analysis on the economic return indicate that the return for all experimental groups receiving tallow, except for the 7% tallow group of semibroilers, was greater than that of control. The best economic return was attained for the group receiving 5% tallow with increase of 8.4% return for the broiler and 6.1% for the semibroiler.

      • KCI우수등재

        광물질사료의 성분분석에 관한 연구

        한인규 ( I K Han ),김규익 ( K I Kim ),오세정 ( S J Oh ) 한국축산학회 1970 한국축산학회지 Vol.12 No.4

        A series of analytical work was carried out to compare the chemical composition including the content of calcium and phosphorus of bone meal, marine shell flour, kelp meal and some other commercially prepared mineral feedstuffs in Korea. The results obtained are summarized as follows: 1. The content of moisture, crude protein, crude fiber, crude ash, calcium and phosphorus in bone meal was significantly different between the products collected. The content of Ca and P in the bone meal analyzed was much lower than those figures we used in the past foreign data from mainly USA and Japan. Therefore, more attention should be given for selecting bone meal to improve the content of Ca and P in the ration. 2. Marine shell flours contained different moisture and crude fiber content. Although most of marine shell flours analyzed contained relatively high content of calcium (31%), some of them contained very low amount of Ca in it (13%). Generally, the content of Ca in good quality marine shell flour of white color was higher than that in poor quality marine shell flour of dark color. 3. Kelp meal from different variety showed significant difference(p$lt;0.01) in moisture, crude protein and crude fiber content, but no difference was observed in crude fat, crude ash and P content between the products. 4. It was indicated that limestone and commercially prepared mineral feeds such as dicalcium phosphate, tricalcium phosphate, Rincal and rock phosphate were good source of Ca and P with small variation in chemical composition between products.

      • 産卵鷄 飼料의 油脂添加에 對한 飼養試驗과 經濟性에 關한 硏究

        吳世正,金春洙,金東均 건국대학교 1973 學術誌 Vol.16 No.2

        This study was carried out to determine the limitation of adding tallow in a commercial laying diet. Two hundred and forty commercial Shaver 288 22-week-old hens were used for sixteen weeks in three farms of Kon-Kuk, So-Shin II and So-Shin III respectively in or vicinity of Seoul, Korea. And this experiment was supported by National Renderers Association, Far East Office. The experimental diets contained 0, 1.5, 3.0 and 4.5% tallow and the rations were formulated to meet all the known nutritional requirements for laying birds. Summarizing the results of these trials, we conclude : 1) No significant differences were discovered in both egg production rate and egg weight over all groups. 2) There was no evidence that tallow additions affected the death rate. 3) Feed intakes were significantly reduced as the level of tallow added increased. Statistical significances were observed between 3% and 0% groups, and between 1.5% and 3.0% groups respectively. But no significant differences were found between 3.0% and 1.5% groups, and between 0% and 1.5% groups. 4) Feed conversion efficiency was gradually improved as the level of tallow added incresed, but not signifycantly as a whole. 5) On the base of oar present cost of 97.05 won/kg, laying diet will be profitable mixed with 1.5% added tallow, hut not with 3.0% because of its present high price. Judging from the energy value of tallow, whore value is 2.6 times as that of corn, it is necessary that the tallow be selling at 72.80 won/kg, and under this condition it will be lucrative mixed with 4.5% added tallow as well as 1.5%.

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