칼슘급여수준· 급여방법·입자도·연령이 메추리의 진정이용칼슘가에 미치는 영향

김용식,선상수,명규호 ( Y . S . Kim,S . S . Sun,K . H . Myung ) 한국축산학회 1985 한국축산학회지 Vol.27 No.6

The relationships between calcium input level and excreta calcium, and true available calcium (TAC) values were Y=3.21 × 10^(-4)x²+ 0.52X-0.48 (r=0.9832^(**) and Y=-6.21 × 10^(-3)X² -0.03 (r=0.9738^(**)) respectively. The TAC values of limestone and oyster shell were the highest in the 40-80 mesh as 74.67%, and the lowest in the 10-30 mesh as 68.2% and 61.01% respectively. Excreted calcium from fed birds were significantly increased (p$lt;0.05) as the age of birds increased, however, excreted calcium from unfed birds were almost same in all the age of birds. The TAC value of calcium carbonate was the highest in that of 16 weeks old bird as 99.42±1.32%. The relationships between age of bird and excreta calcium, and TAC value were Y=0.578x-0.0475 (r=0.9960^(**)) and Y=-0.129X+100.0425 (r=-0.9850^(**)) respectively.

인텔리젼트 오피스의 시큐리티 시스템과 건축계획의 공간구성

김용식,Kim, Y.S. 대한설비공학회 1995 설비저널 Vol.24 No.6

메추리의 6개 칼슘공급원에 따른 진정이용칼슘과 외견상이용칼슘가의 비교

김용식,선상수,명규호 ( Y . S . Kim,S . S . Sun,K . H . Myung ) 한국축산학회 1985 한국축산학회지 Vol.27 No.5

True available calcium(TAC) values of 6 calcium supplements were a little greater than apparent available calcium(AAC) value of them, however, no significant difference was found between two kinds of available calcium values. There were significant differences (p$lt;0.01) among each TAC and AAC values of 6 calcium supplements. TAC values of calcium carbonate and oyster shell in mixed diets were significantly (p$lt;0.05) greater then AAC values of them. TAC and AAC values of calcium carbonate were the highest as 99.94%±2.10 and 98.45%±1.07, and those of oyster shell were the lowest as 67.78%±1.96 and 67.40%±2.07 respectively.

콩짚의 품종별 사료가치 비교

김용식,명규호,나진수 ( Y . S . Kim,K . H . Myung,J . S . Na ) 한국축산학회 1982 한국축산학회지 Vol.24 No.5

To evaluate the nutritive values of soybean straws of the different varieties, chemical compositions and in vitro digestibilities were examined. The soybean varieties used in this study were Bongeui, Dongbug, Suweon 86, Kwangkyo, Yugoo 3 and Hill. The results obtained are summarized as follows (1) The average weight of soybean straws was 12.0 g. The propotion of pod and stem were 60.4% and 39.6% of the straw fractions on a dry matter basis. (2) Although there were no differences in chemical composition, crude protein was slightly higher in Bongeui and Hill than in others. Pod contained more crude protein, nitrogen free extract, crude ash, cell content and hemicellulose than stem, but reverse phenomena were observed in the contents of cell wall constituents (CWC), acid detergent fiber (ADF), cellulose and lignin. (3) Dry matter, neutral detergent fiber (NDF), ADF and cellulose digestibilities of soybean straws in vitro were highest in Kwangkyo and lowest in Yugoo 3. Dry matter, NDF, ADF and cellulose digestibilities of pod in vitro were higher than those of stem. Eighty percent of the straw fraction, pod and stem based on a dry matter were disappeared within 48 hours by in vitro digestion.

난용종계에 대한 채종박의 장기급여가 주요경제형질 및 갑상선에 미치는 영향

김용식 ( Y . S . Kim ) 한국축산학회 1974 한국축산학회지 Vol.16 No.3

This experiment was undertaken to investigate the effects of prolonged feeding of domestic rapeseed meal on some economical characters and thyroid function in the egg type chicken breeder female. Three hundred and thirty three chicks of 2 week-old commercial breed (Ishii Z22) were divided into three groups of one hundred eleven (6 males and 105 females) each, and rapeseed meal was fed for 40 weeks at levels of 0 (control), 8 and 13 percent of the diets. The metabolizable energy, protein and lysine levels of treated diet were equal with control, and every nutrient content in each diets r4as approximately equivalent to NRC recommendation. The results obtained in this experiment were summarized as follows: 1. Up to 20 weeks of age, there were no significant differences between treatments on either mortality, body weight gain, feed consumption or feed conversion rate. Considering these results, it was presumed that the use of domestic rapeseed meal at the 13 percent level of rations was safe for rearing period of laying type breeder. 2. In Iaying period, viability, final (42 weeks of age) body weight, feed consumption and body weight gain per 1㎏ feed intake were lower with the rapeseed meal diets than with the control diet. However, no significant differences between treatments in these characters except feed intake were noted. 3. Rapeseed meal feeding for rearing period did not effect on the sexual maturity and egg weight at 50 percent production. But the continuous feeding for laying period significantly lowered egg production and egg size as compared with control feeding. This result indicated that special regard would be paid to the use of native rapeseed meal at 8 percent level over in laying ration. 4. There was no difference in feed consumption per 10 eggs, however, for the feed requirement per 1㎏ egg production 13 percent level rapeseed meal fed birds resulted in slightly higher than the other two groups. 5. fertility and hatchability were similar in the eggs from the birds fed control and rapeseed meal diets throughout the experiment. However, the chicks from the eggs laid by the rapeseed meal-fed birds were slightly smaller at hatching those of the birds fed control diet. And rapeseed meal in the breeder ration resulted in significant increase in the thyroid weights of progeny at hatching. 6. Rapeseed meal in the ration resulted in significant increases in the weights of the thyroid glands relative to total body weights. The increase in thyroid size was greater with the higher level of rapeseed meal in the diet and with the longer period of feeding rapeseed meal diet. 7. The sizes of follicles and epithelial cells in the thyroid glands of birds were also increased significantly by feeding of rapeseed meal diets. As time of treatment progresses, however, the sizes of those were drawed near to that of control. The glandular enlargement in this instance was found to be caused by the increased number of follicles. 8. The concentration of cholesterol in the blood serum of birds was significantly elevated by the feeding of rapeseed meal diets. But at 6 and 9 weeks after feeding rapeseed meal, the elevated serum cholesterol concentrations were reverted to almost normal level. This result suggests that the thyroid apparently reaches physiological equilibrium at 6 and 9 weeks after feeding of rapeseed meal diets, therefore goitrin in rapeseed meal may not be detrimental to the normal egg production of the laying hen. 9. There were no significant differences between treatments on the values of erythrocyte counts and hemoglobin contents. Considering this result, it was presumed that the use of domestic rapeseed meal about 13 percent level of ration did not decrease the secretion race of thyroid hormone enough to reach anaemia.

과산화수소처리 볏짚의 반추가축 사료화에 관한 연구

김용식(Y . S . Kim),명규호(K . H . Myung),권동석(D . S . Kwon),이석래(S . R . Lee),이태훈(T . H . Lee) 한국축산학회 1990 한국축산학회지 Vol.32 No.3

Experiments were carried out to investigate on the effect of cryoprotectants of the quality changes of chicken breast and leg meat during frozen storage. Chicken breast and leg meat were mixed with various cryoprotectants and stored at -20℃ in a chest freezer for 12 weeks. Samples were analyzed for pH changes, TBA value, free fatty acid contents, water and salt soluble protein extractability. The results obtained are summerized as follows ; 1. The pH value in all of cryoprotectants added samples were increased up to 0.27-0.46 in chicken breast and 0.1-0.25 in leg meat as in non treated samples. The TBA value were increased with storage time and higher value at 12 weeks as compared with the non-treated samples. 2. The effect of cryoprotectants on the free fatty acid of chicken meat were showed significance. The cryoprotectant effect on the free fatty acid was greater in chicken leg than in breast meat, especially CP-C treated samples. 3. The effect of cryoprotectants on the water soluble protein extractability were showed no significance. 4. The cryoprotectant effect on the salt soluble protein extractability was more pronounced in chicken leg than in breast meat. The extractability of the CP-A treated in chicken leg meat was increased up to 20-50% as in non treated samples.

한우와 Aberdeen Angus 종 F1 상대성장에 관한 연구

김용식 ( Y S Kim ) 한국축산학회 1970 한국축산학회지 Vol.12 No.4

Reltive growth of various parts of body in F₁ between Korean cattle and Aberdeen Angus was observed during the growing period. The results are as follows: 1. The Regression analyses of body length, hip height, chest girth, chest depth, chest width, hip width, rump length, and shank circumference on the withers height revealed diphasic straight. On the other hand, the triphasic straight was found in the regression of pin bone width and thurl width on the withers height. These results were same in both districts, Chonnam and Chonpuk area. 2. Critical points of body length, hip height, chest girth, chest depth, chest width, hip width and rump length on the withers height were at the age of 23- to 24-month in both areas. In the F₁ of Chonnam area, the critical points of shank circumference on the withers height was at the age of 13- to 14-month, while it was 11- to 14-month, while it was 11- to 12-month in Chonpuk area. The critical points of pin bone width and thurl width against the withers height were at 13- to 14-month and 23- to 24-month respectively in Chonnam area, but 11- to 12-month. and 23- to 24-month in Chonpuk area. 3. In Chonnam area positive growth(the a value, which is the relative growth coefficient, is more than 1.0) was seen in the 1st growth stage of body length(a=1.265) and chest girth (a=2.131), but in the 2nd growth stage, the body length and chest girth showed negative growth. In Chonpuk area, marked positive growth was seen in the first and second growth stage of body length (a=1.425, a=1.957) and chest girth. (a=2.167, a=2.476) 4. The relative growth coefficient of body length and chest girth against the withers height in the first growth stage was bigger than that in the second growth stage in Chonnam area. But adverse results were obtained in Chonpuk area. 5. In both areas, the growth of chest depth and chest width against the chest girth showed the triphasic straight but the body length, hip width, and shank circumference revealed the diphasic straight. 6. The critical points of chest depth and chest width against the chest girth were at the age of 13- to 14-month and 23- to 24-month in Chonnam, while in Chanpuk those were 11- to 12-month and 23- to 24-month. The critical points of body length and hip width against the chest girth were at the age of 23- to 24-month in both areas. The critical points of shank circumference against the chest girth was 13- to 14-month age in Chonnam, but 11- to 12-month age in Chonpuk. 7. The relative growths of chest depth, chest width, body length, hip width, and shank circumference against the chest girth showed the marked negative growth except the body length(Chonnam: a=0.966, Chonpuk: a=0.714). 8. In both areas, the growth of shank circumference against the body weight showed the diphasic straight but the growths of body length, chest girth, and withers height revealed the triphasic straight. 9. The critical points of shank circumference against the body weight was 13- to 14-month age in Chonnam and 11- to 12-month age in Chonpuk. But the critical points of body length, chest girth, and withers height were at the age of 13- to 14-month and 23- to 24-month in Chonnam, and 11- to 12-month and 23- to 24-month in Chonpuk. 10. The marked negative growth was seen in the growth of body length, chest girth, withers height, and shank circumference against the body weight.

한우와 Aberdeen Angus 종 F1 의 체형 및 발육에 관한 연구 ( 제2보 . F1 발육과 발육곡선 )

김용식 ( Y S Kim ),박종만 ( C M Park ) 한국축산학회 1970 한국축산학회지 Vol.12 No.2

The body weight increase and growth rate of F₁ between Korean cattle and Aberdeen Angus were examined. In a recent 21-month period, from. July, `68 to April, `70, 50 cattle of F₁ were studied and the results are as follows; 1. It was noted that the growth rate of F₁ of Chonpuk area was better than that of Chonnam province. 2. The differences of body weight increase between sex and by age were not significant during the period. 3. If they are reared under the feeding condition of Chonpuk area for 21 month, they will gain 173.93 to 208.49 ㎏. of body weight. While they will gain 125.44 to 149.48 ㎏. of body weight for 21 months under the feeding condition of Chonnam province. (tα=0.05) 4. In the growth curve as to the body weight, Gaines and Campbell`s formula was more applicable than the Dyar`s formula. 5. Comparatively high growth gates were seen in the period of 10 to 14 months after births. The growth rate was gradually decreased by age after 14 months.

廻腸 憩室穿孔에 의한 凡發性 腹膜炎 및 多性發 空腸 憩室症

김용식(Y.S.Kim),심명석(M.S.Sim),장석효(S.H.Chang),백낙환(N.H.Paik) 대한외과학회 1983 Annals of Surgical Treatment and Research Vol.25 No.6

냉동공조 팽창장치 개발을 위한 웨이퍼 오리피스 유량 특성에 관한 실험적 연구

김용식(Y. S. Kim),양훈철(Y.C. Yang),김무환(M. H. Kim) 대한설비공학회 1999 대한설비공학회 학술발표대회논문집 Vol.1999 No.-