장기 고온스트레스가 마우스 혈청 Dehydroepiandrosterone Sulphate(DHEAS)농도에 미치는 영향

최형송 한국동물생명공학회(구 한국동물번식학회) 2000 Reproductive & developmental biology Vol.24 No.3

Silage用 玉蜀黍 新品種의 生育特性및 生産性 比較 硏究

崔亨松,李成哲 又石大學校 1989 論文集 Vol.11 No.-

This field experiment was conducted to investigate the growth characteristic and yield of introduced Maize for silage at the experimental field of Suwon, Eyjongbu, and Chung nam, from April, 1988 to 1989. The results obtained are as follows: 1. In the Chung nam, Verieties of 3282, 3144W, EXP771 and 3233 were better than that of Suwon 19 on the disease resistance and dry matter yield. 3. In the Eyjongbu, verieties of 3252, EXP 771 and 3144W showed good response to the disease resistance and dry matter yield. 4. Based on the results of the three experiemental field, 3144W and EXP 771 varieties could be recommended as a source of good vericties for disease resistance and dry matter yield.

高山地帶의 草地改良에 適合한 牧草의 品種 選定에 관한 硏究

崔亨松,李成哲 又石大學校 1989 論文集 Vol.11 No.-

This experiment was carried to determine the selection of pasture species for the pasture improvement from experimental field of Tae Kwalyong from 1984 to 1988. The experiment was arranged as a randomized block design and is concerned with the characteristics of growth, dry matter yield, and proximate analysis on the pasture species. The results obtained after three-year experiment are summarized as follows: 1. Productivity of Timothy, red top and reed canarygrass showed good response to the experimental field of Mt. Jung Dong. 2. Level of maturity from sowing to heading showed good response to the species of Tiller, Odenwa¨lder, Landsberger, Streaker and Venture. 3. Winter hardiness showed good response to the species of Climax, Kahu, Hokuo, Tiller, Odenwa¨lder, WWT94, Streaker, Listra, Palaton and Venture. 4. In the last harvest, Cover ratio showed good response to the species of Landsberger, Tiller, WWT94, Hokuo, Odenwa¨lder, Streaker and Listra. 5. Annual dry matter yield showed good response to the species of Hokuo, Odenwa¨lder, Tiller Rasaut, Kahu, Timfor, Streaker, Listra, Palaton and Venture. 6. Crude protein and crude fiber of Venture reed canarygrass were 26.12% and 26.13%, respectively. And quality of Venture reed canarygrass was better than that of Timothy.

外因性 GH의 投與를 통한 韓牛의 成長 및 乳腺의 發達

최광수,최형송,이성철 우석대학교 자원개발연구소 1996 자원개발연구소논문집 Vol.1 No.-

위인성 성장호르몬(rGH)을 14일 간격으로 두당 250mg씩 한우 암송아지(8-12개월령. 160-240kg)에 대한 투여한 후 내인성 성장호르몬, estrogen IGF-I, 체중, 유두용적의 변화 및 IGFBP_3에 대한 processing enzyme의 활성정도를 파악하고져 28일 간격으로 1994년 12월부터 다음해 2월까지 본 연구를 실시하였다. GH 혈청농도는 처리구가 무처리구에 비해 rGH는 투여후 시간이 경과함에 따라 현저히 증가 하였고(p<.01). estrogen과 IGF-I도 처리 후 8주째(P<.05)에 증가를 보였다. 또한 체중(P<.01)과 유두용적(P<.05)도 투여 8주째에 증가를 보였다. 외인성 성장호르몬(rGH)의 投與前에 processing enzyme의 활성이 낮았으나, 250mg의 rGH 투여 후에는 processing enzyme의 활성이 실험기간 내내 현저히 증가하는 것으로 나타났다. 본 연구결과 외인성 성장호르몬은 한우암송아지의 내인성 호르몬 변화를 통하여 성장 및 유선발육을 증진 시킬수 있다는 것을 제시하여 주었다. This experiment was carried out with 12 Korean native heifers(8-12 mth old : body weight, 160-240kg) raised at a farm of Chang-Soo Livestock Cooperatives to evaluate the effects of rGH(recombinant growth hormone) on serum concentrations of growth hormone, estrogen, and IGF-I. weight gain teat volume gain and processing enzyme activity of IGF-I binding protein Ⅲ at 28 day intervals. Animals used were injected with 250mg rGH at 14 day intervals from December. 1994 to February, 1995. The significant difference was found in the group of treatment on the 4th week in the endogenous GH(p<.01) and 8th week in estrogen and IGF-I(p<.05) after injection of rGH in Korean native heifers. There were significant differences between control and treatment group in weight and teat volume on 8th week after treatment(P<.05). Processing enzyme activity before injection of rGH was low. However heifers injected with 250mg of rGH showed that processing enzyme activity of IGF binding protein was highly increased throughout the experiment. Present results suggest that injection of exogenous rGH to heifers can increase the growth performance and mammary gland development of Korean native heifers by the endogenous hormonal changes.

生殖生長期 冷水溫이 벼의 SOURCE와 SINK 關聯形質 및 養分吸收에 미치는 硏究 : 冷水灌漑核이 벽의 SINK 關聯形質에 미치는 影響 Influence of Growth Characters Related to Sink of Rice by Cool Water Irrigation Times

崔洙日,崔亨松 又石大學校 1989 論文集 Vol.11 No.-

本 硏究는 魃對策用으로 施設한 地下管井의 冷水被害를 輕減시키고자 벼의 生殖生長期에 冷水灌漑時刻을 晝夜間으로 나누어 實驗을 遂行하였던 바 다음과 같은 結果를 얻었다. 1. 冷水灌漑는 稈長, 穗長, 抽出度의 伸長을 抑制시켰고 夜間보다는 晝間의 冷水灌漑時에 伸長短縮 程度가 컸다. 2. 晝間 冷水灌漑는 夜間 冷水灌漑보다 枝梗別 ??花着生數의 減少 및 不稔率의 增大, 登熟低下, 千粒重의 減少等 Sink量의 向上에 被害를 惹起시켰다. 3. 10a當 收量도 晝間灌漑가 夜間 冷水灌漑보다 幼穗形成期나 減數分烈期 모두 減收되었다. This study was conducted to investigate the effect of cold damages on transplanted rice from underground water that installed for drought. Transplanted rices at reproductive growth stage were irrigated in cold water from underground at day and night respectively. The irrigation of cold water was reduced in culm length, panicle length and degree of panicle exsertion. The effect of cold water on these parts in rice was greater at the irrigation of day than at night. Cold damage from day time irrigation the number of spikelets per first and second rachis branches, sterility ratio, ripening ratio, and 1000 grain weight was greater than from night time irrigation. The yield of hulled rice showed higher at the irrigation of night compared with that of day.

脫皮大豆粕과 全脂大豆粕의 돼지에 對한 飼料價置

朴弘錫,崔亨松,李成哲,許三男 全北大學校 附設 畜産開發硏究所 1988 畜産開發硏究報告 Vol.2 No.-

A 105-day feeding trial with 3-way crossbred piglets were conducted to inversigate the feedin values of dehulled soybean meal and dry extruded full-fat soybean in pigs. A total of 45-day-old 72piglets were randomly allotted to four dietary treatments ; the Control treatment, two dehulled soybean meal treatments in which dehulled soybean treatment in which full-fat soybean replaced tallow and pert of soybean meal in Control. There were 3 replicates per treatment and 6 piglets (3 female and 3 castrated male) per replicate(pen). Four all-mash experimental diets were formulated to have similar levels of energy and protein. Economic evaluations were conducted upon the completion of the feeding trial. When dehulled soybean meal replaced soybean meal a part or all of fish meal in Control, the growth performance of pigs appeared to improve but not enough to show a significant degree. However, the feed cost per ㎏ gain was lowered greatly by replacing soybean and fish meal with dehulled soybean meal. When full-fat soybean replaced soybean mel and tallow in Control, pigs appeared to grow faster and consume more feed during starting and growing period, without any change in feed efficiency. During the finishing period, however, no difference in growth performance was found by the replacement. Throughout the overall feeding period, the feed cost per ㎏ gain in pigs fed full-fat soybean was similar to that of Control. Notably, the feed cost per ㎏ gain during starting and growing period increased by the use of full-fat soybean. During the finishing period, however, the trend was reversed. In conclusion, the growth performance of pigs was affected favorbly by the use of defulled soybean meal replacing regulat soybean meal and fish meal. Moreover, the use of dehulled soybean meal turned out to be economically advantageous. The growth performance of pigs was not affected adversely by the use of full-fat soybean in replacement for soybean meal and tallow. Economically, more favorable results may be expected if the usage of full-fat soybean be limited to the finishing period.

볏짚의 성숙기가 한우 반추위 소화율과 사료가치에 미치는 영향

이성철,최형송 又石大學校 1994 論文集 Vol.16 No.-

In order to evaluate the feed value of rice straw as influenced by ripening stage, and in situ studies using a rumen fistulated Korean cow and nylon bag technique were conducted. The results obtained are summarized as follows : 1. The contents of crude fiber and crude ash were increased, while those of crude protein and crude fat were decreased as the ripening of straw progressed. The content of NDF was not affected by the ripening stage. After the yellow stage hemicellulose was remarkably decreased while cellulose and lignin were increased. 2. Degradation of rice straw NDF in the rumen was most rapid when at the heading stage but degradation of straws after the milky stage were similar each other. Degradation of rice straw ADF, on the other hand, did not show any difference with advancing ripening stage. 3. Considering the change of chemical composition and degradation rate of rice straw in the rumen under the different ripening stage, it can be concluded that the lignification of rice straw was accelerated after the heading stage.

飼料 蛋白質의 反芻胃內 分解程度의 相互比較

朴弘錫,崔亨松,李成哲,尹昌 全北大學校 附設 畜産開發硏究所 1991 畜産開發硏究報告 Vol.4 No.-

In order to determine if classification or mutual comparison of feeds in respect of their susceptibility to degration of protein in the rumen can be made on the basis of the measurement of its degradability after incubation for 1, 3, 5, 8, 16 and 24 hours in the rumen by a nylon bag technque, disappearance of dry matter and crude protein from the bags were measured at the incubation times with 23 feeds using a fistulated cow given 2㎏ concentrate and 5㎏ rice straw per day. A method is proposed to estimate the effective protein degradation (EPD) as a function of the outflow rate and the defadation rate. The rates of disappearance of dry matter of feeds tested in this study from the rumen were apparently lower than those of proteins, while there was a high positive correlation between dry matter disappearance and protein degradability, in rupin, raw soybeans and extruded soybeans wear as high as 0.9913, 0.9986 and 0.9946, respectively. The order of the extend of degradation of protein among feeds varied considerably between incubation times. The disappearance rate of from incubation times was especially high in wheat bran, lupin, raw soybeans, corn gluten feed, rapeseed meal and meat bone meal, and it was revealed that the protein degradability of corn gluten meal, sorghum, cottenseed meal, fish meal and feather meal were remarkabily lower than the others. The ruminal crude protein degradabilities were reduced by extrution treatment of raw soybeans, and the protein degradabilities of extruded soybeans and untreated soybeans, and the protein degradabilities of extruded soybeans and untreated soybeans after 8 hours incubation were 37% and 68%, respectively. The ruminal disappearance of soybean meal crude protein estimated by nylon bag technique were decreased significantly with 0.2% formaldeyde treatement per air dry matter, and the average protein degradabilities of 0.2% formaldehyde treated soybean meal and untreated soybean meal after total incubation times were 8.7% and 42.2% respectively.

Feeding Value of Meat and Bone Meal as an Ingredient in the Broiler Chick Ration

Park, Hong Suk,Choi, Hyung Song 전북대학교 농업과학기술연구소 1981 農大論文集 Vol.12 No.-

미국産 肉骨粉의 부로이라에 대한 銅料的 價値와 經濟性을 알아보기 위하여 8週間의 사양시험을 實施한 바 결과는 다음과 같다. 육골분을 어분과 일부 대두박으로 대치하여 사용한 수준은 0, 2.5, 5.0, 7.5, 10.0 그러고12.5%이었으며 아미노산 첨가효과를 알아보기 위하여 각사료에 베치오닌과 라이신을 첨가하였다. 육골분 사용수준을 2.5%씩 증가함에 따라 飼料攝取幾과 增重量이 크게 向上되어 육골분을 사용하지 않았을 때 飼料效率이 2.85이던 것을 육골분 10.0% 수준에서는 2.42로 改善하는 效果를 가져 왔고 單位修重 增加當 飼料費를 크게 절감하였다. 가장 경제적인 육골분 사용수준은 7.5%로 나타났으며 이때의 사료 효율은 2.50이었다. 메치오닌과 라이신을 첨가하였을 때, 육골분을 사용하였거나 하지 않았거나 또는 육골분수준에 상관없이 사료섭취량에는 변동이 없었으며, 成長促進 효과가 있어 모든 처리에 있어 서로 비슷한 정도의 사료 효율을 개하는 결과를 가져왔다. 메치오닌과 라이신을 첨가하는 경우 가장 경제적인 육골분수준은 2.6~5.0%이었다 In order to evaluate the feeding value of American meat and bone meal a simple feeding trial was conducted with 720 white broiler cross cockerels for six weeks. Heat and bone meal was used at the 0, 2.5, 5.0, 7.5, 10.0, and 12.5% level in the experimental rations at the cost of fish meal or fish meal and soybean oil meal on the basis of the equivalent amount of protein. The effect of supplementing methionine and lysine on chick performance was also studied at each meat and bone meal level. As the dietary meat and bone meal level was increased feed intake, body weight gain, and the feed efficiency were gradually improved. At the 10.0 % meat and bone meal level the feed efficiency reached 2.42 and then leveled off while it was 2.85 at the 0% meat and bone meal level. The most economic meat and bone meal level appeared to be 7.5% of the ration at the present experimental condition. The major effect of supplementing methionine and lysine was the improved feed efficiency through stimulating chick growth rate without improving feed intake. The extents of improving chick growth and feed efficiency were similar for the rations whether they contained meat and bone meal or not.

어린 돼지에 대한 Sulfachloropyridazine + Trimethoprim 합제의 성장촉진 효과

최진호,최형송 ( J . H . Choi,H . S . Choi ) 한국축산학회 1985 한국축산학회지 Vol.27 No.7

To evaluate the effects of a mixture of sulfachloropyridazine sodium (100 ppm) + trimethoprim (20 ppm) in promoting growth and improving feed efficiency of starting pigs, a total of 80 weaning three-way crossbred (Yorkshire × Landrace × Duroc) pigs weighing an average of approximately 10㎏ was used for a period of 50 days. Animals were divided into 8 pens of 10 pigs each. Each pen was assigned to one of 2 treatments with 4 replications (2 pens of males and 2 pens of females). Animals were fed a pig starter diet either with or without supplementation of sulfachloropyridazine sodium + trimethoprim (S + T). Pigs fed the diet containing S+T mixture gained significantly (P $lt; 0.01) more weight than nonmedicated control pigs. Medicated animals consumed numerically more feed than nonmedicated animals and feed efficiency was improved by feeding S+T mixture, although differences in feed intake and feed efficiency were not statistically significant.