Machine Learning을 활용한 항만 생산성 예측

강한석,박기군,한영재,배혜림 한국경영과학회 2022 한국경영과학회 학술대회논문집 Vol.2022 No.6

한우에 있어서 GnRH와 PGF_2α에 의한 발정동기화 연구

강한석,김선구 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1

This study was conducted to get some information for the timed insemination program development of Korean native cows. Korean native cows that didn't show estrus behavior up to 60days after calving were used. Estrus synchtonization was induced by injection of PGF2α and GnRH. The estrus synchronization rate was 40.0% in treatment of PGF2α- PGF2α and 93.3% in treatment of GnRH- PGF2α -GnRH. All synchronization cows ovulated between 26 and 32hrs after the 2nd injection of GnRH and the highest ovulation rate was shown at 28hrs after the 2nd injection of GnRH. The highest pregnancy rate was shown in case of artificial insemination at 24hrs after the 2nd injection of GnRH. The pregnancy rate was 50.7% in treatment of PGF2α - PGF2α and 76.9% in treatment of GnRH- PGF2α -GnRH.

國除金融機構와 融資政策

강한석 成均館大學校 經濟學會 1963 成均經濟 Vol.10 No.1

Machine Learning을 활용한 항만 생산성 예측

강한석,박기군,한영재,배혜림 대한산업공학회 2022 대한산업공학회 춘계학술대회논문집 Vol.2022 No.6

합성아미노산 첨가수준에 따른 부로일러 사료의 단백질 절약효과

강한석,곽종형 ( Han Suk Kang,Chong Hyung Kwack ) 한국축산학회 1983 한국축산학회지 Vol.25 No.2

In order to investigate the protein sparing effect of synthetic amino acids (dl-methionine, l-lysine) on the broiler ration, this experiment was conducted with a total of 240 Piterson starting chickens for a period of 4 weeks. 8 treatments of (1) control, CP 21%,(2) basal, CP 19%, (3) basal +lysine 0.15%, (4) basal + lysine 0.3%, (5) basal + methionine 0.1% (6) basal + methionine 0.2%, (7) basal + lysine 0.15% + methionine 0.1%, (8) basal + lysine 0.3% + methionine 0.2% were employed with 3 replicates in this experiment. Metabolism trial was carried out at the end of feeding trial. The results obtained were summarized as follows; 1. Body gain was higher in the basal + lysine 0.15% + methionine 0.1% treatment than in the other treatments. There was significant difference (P$lt;0.01) between the basal+lysine 0.15% + methionine 0.1% treatment and other treatments. 2. Feed intake was higher in the control treatment .than in the other treatments. However, no significant difference was found out between the control treatment and the lysine 0.15% + methionine 0.1% treatment. However, there was significant difference (P$lt;0.05) between the control treatment and the lysine 0.3% + methionine 0.2% treatment. Also, significant difference (P$lt;0.01) was found out between the control treatment and other treatments. 3. Basal + lysine 0.15% + methionine 0.1% treatment was best in the feed efficiency but basal treatment basal + lysine 0.15% treatments were lower than other treatments. 4. In the nutrient: utilization, utilization of dry matter, crude protein and crude fat was highest in the control, lysine 0.15% + methionine 0.1% and the control treatment respectively. Then, significant difference (P$lt;0.05) was found between the control treatment and the basal treatment in the crude fat utilization. Utilization of carbohydrate was higher in the lysine 0.15% + methionine 0.1% treatment than in the other treatments. Significant difference (P$lt;0.05) was found between the lysine 0.15% + methionine 0.1% treatment and the methionine 0.2%, basal treatment, and there was significant difference (P$lt;0.01) between the lysine 0.15% + methionine 0.1% treatment and other treatments in the utilization of carbohydrate. 5. In the economical analysis, feed cost required per kg body gain was lowest in the lysine 0.15%+ methionine 0.1% treatment and next in the control treatment. Therefore, based on the results of this experiment, it may be concluded that the supplementation of lysine 0.15% + methionine 0.1% with the broiler ration of crude protein 19% would spare 2% protein feed.

단위영양 ; 에너지 수준이 broiler 의 성장과 영양소 이용율에 미치는 영향

강한석,고영두,김재황 한국동물자원과학회 ( 구 한국축산학회 ) 1993 한국축산학회 심포지움자료집 Vol.- No.-

남은 음식물을 이용한 오리 사육 시험

강한석,전해열,신택순,김선구 密陽大學校 生命資源開發硏究所 2003 生命資源開發硏究 Vol.7 No.-

본 연구는 남은 음식물을 가축에게 이용하기 위하여 개발된 발효사료를 이용하여 오리를 사육했을 때 사양 효과를 검토하기 위하여 수행되었다. 육추가 끝난 16 일령 오리 80마리를 공시하여 배합사료의 50%를 남은 음식물 사료로 대체 급여하고 급여기간에 따라 대조구(0일), T_(1)(10일), T_(2)(15일), T_(3)(20일), T_(4)(25일)의 5개 처리에 배치하였다. 오리들은 57일령에 도살되었다. 시험완료시 체중은 대조구, T_(1), T_(2), T_(3) 및 T_(4)에서 각각 2376.Og, 2313.1g, 2308.1g, 2235.8g 및 2269.6g 으로 처리간에 차이가 없었다. 처리별 도체율은 각각 69.6%, 69.4%, 66.6%, 64.1% 및 70.8%로 T_(2)와 T_(3)에서 유의적으로 낮은 편이었다. (p<0.05) 가식내장 중 근위의 무게는 각각 78.7g, 78.6g, 71.79g, 66.4g, 76.0g으로 T_(2)와 T_(3)에서 낮은 편이 었다. (p<0.05) 본 시험결과 육용오리 사육시 남은 음식물 사료를 25일 간은 농후사료의 50%를 급여해도 좋을 것으로 나타났다. This study was carried out to investigate the feeding effects of food waste in growing duck. The food waste was fermented before being used as a substitude of duck feed. The substitution level of fermented food waste during experment was 50% of commercial broiler feed. Eighty ducklings, 16days old age, were allocated to five treatments. The feeding periods of fermented food waste were control, 0 day ; T_(1), 10 days ; T_(2), 15 days ; T_(3), 20 days and T_(4), 25 days. Five ducks in each treatment were slaughtered at 57 days old. The live weight of control, T_(1), T_(2), T_(3) and T_(4) at 57 days old were 2,336.0g, 2,313.1g, 2,308.1g, 2,235.8g and 2,269.6g, respectively. and there were no significant difference among treatments. Dressing percentage of control, T_(1), T_(2), T_(3) and T_(4) were 69.6%, 69.4%, 66.6%, 64.1% and 70.8%, respectively, and those of T_(2) and T_(3) were significantly lower than other treatments(P<0.05) The yields of gizzards of control, T_(1), T_(2), T_(3) and T_(4) were 78.7g, 78.6g,71.7g, 66.4g and 76.0g, respectively, and those of T_(2) and T_(3) were significantly lower than other treatment(P<0.05) This results indicated that the food waste could be used as a substitude of growing duck feed for 25days.

원발병소가 갑상선인 전이성 두개골 종양 2례 - 증례보고 -

강한석,박용석,이영배,이규춘,목진호,김한식,Kang, Han Sug,Park, Yong Seok,Lee, Young Bae,Lee, Kyu Chun,Mok, Jin Ho,Kim, Han Sik 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.10

The authors present two cases of lytic skull metastasis from thyroid carcinoma. The first case is a 62-year-old female who was diagnosed as thyroid cancer one year ago. She complained a mass over the right parietal area but showed no neurological abnormalities. The mass didn't invade the dura, and was completely removed. Histopathological examination revealed the insular thyroid carcinoma, composed of undifferenciated cells that were responded to thyroglobulin in immunohistochemical staining. The second case is a 75-year-old female who complained a mass over the right parietal and neck area without any neurological abnormality. The mass was confined to the epidural region which was associated with osteolytic change of skull. It was also completely removed. Histopathological examination of mass revealed the follicular thyroid carcinoma.

눈꽃동충하초균주(Paecilomyces japonica) 접종사료 급여가 육계의 생산성에 미치는 영향

강한석,손장호,이길왕,김선구,조병욱,신택순,전해열 한국가금학회 2003 韓國家禽學會誌 Vol.30 No.1

본 연구는 눈꽃 동충하초(Paecilomyces japonica)의 접종사료 급여가 육계의 증체량, 사료효율 및 닭고기 중에 전이되는 cordycepin의 함량에 미치는 영향을 구명하기 위하여 실시하였다. 120마리의 초생추를 기초사료만 급여한 대조구, Paecilo-myces japonica 접종사료 5% 대체한 T1, 접종사료 10% 대체한 T2및 접종사료 20% 대체한 T3의 4 처리구로 구분하여 2∼5주령간(4주 동안) 사양실험을 진행하였다. 눈꽃 동충하초가 접종된 사료 중의 cordycepin의 함량은 미접종 사료보다 유의하게 높았다(P<0.05). 증체량 및 사료효율은 사육 전기에 T1 구에서 현저하게 개선되었지만(P<0.05),사육 후기에는 T3 처리구에서 가장 낮게 평가되었으며(P<0.05), 사육전 기간에 증체량 및 사료효율은 T3구가 다른 처리구보다 낮아지는 경향을 보였다 사양시험 종료 후, 가슴살과 대퇴부살 중에 검출된 코디세핀(Cordycepin)의 함량은 동충하초 처리구에서 대조구보다 통계적으로 높았지만(P<0.05).동충 하초 처리구간에 cordycepin 함량은 차이가 없었다. 본 연구결과로 증체량 및 사료효율은 눈꽃동충하초 접종사료 5% 대체구(T1)에서 개선되는 경향을 보였으며, 가슴살 및 대퇴부살에서 코디세핀(Cordycepin)의 함량은 눈꽃동충하초 접종사료의 급여로 높게 나타났다(P<0.05). This study was carried out to investigate the effects of the inoculated diet with Paecilomyces japonica on weight gain, feed efficiency and cordycepin contents in the breast and thigh meats of broilers. One hundred and twenty broiler chicks were divided into four dietary groups ; 1) control (basal diet), 2) T1 (substituted with 5% inoculated diet), 3) T2 (substituted with 10% inoculated diet) 4) T3 (substituted with 20% inoculated diet) during 4 weeks. Cordycepin contents of inoculated diet with Pacilomyces japonica was significantly higher than before inoculation (P<0.05). Body weight gain and feed efficiency were highest in T1 group when fed starter diet (P<0.05) but these were lowest in T3 group fed when fed finished diet (P<0.05). Body weight gain and feed efficiency were the lowest in T2 group for overall period than other groups. Cordycepin contents of breast and thigh meats were significantly higher in Pacilomyces japonica groups than control at 5 weeks of age (P<0.05). However, it was similar among the T1, T2 and T3 groups. These results indicated that body weight gain and feed efficiency tended to increase in birds fed replaced 5% inoculation diet Cordycepin contents of breast and thigh meats would be increased significantly in birds fed inoculated diet (P<0.05).

사료 에너지 수준이 Broiler 의 복강지방축적 , 간의 지방산 조성 및 혈액성분에 미치는 영향

강한석,고영두,김재황 한국축산학회 1994 한국축산학회지 Vol.36 No.3

This study was conducted to investigate the effects of various dietary energy regimes during the starter and finisher periods on the abdominal fat content, blood composition and free fatty acid contents in the livers of broiler chickens. Two days-old broiler chickens were randomly alloted to three energy treatments (L, 3,000; M, 3,200; and H, 3,400 ㎉ MF/㎏) during the starter period (0 - 3 wk of age). Nor each treatment, three energy levels(L, 3,000; M, 3,200; and H, 3,400 ㎉ ME/㎏) were assigned fbr the finisher period to give 9 treatments (LL, LM, LH, ML, MM, MH, HL, HM, and HH) in all. The protein Levels for the starter and finisher periods were 23 and 20%, respectively. The results obtained are summarized as follows : 1. The abdominal fat content was significantly higher(P$lt;.05) in the HH(28.7 g/㎏) and the MH(2s.8 g/㎏) groups than in the others. The liver weight was significantly higher (P$lt;.05) in the LL(2.3%) and the ML(2.4%) groups than in the others. 2. The palmitic acid content in the liver tissue was relatively higher in the HH(37.4%) and the HM(34.5%) groups, while oleic acid was relatively lower in the HH(24.8%) and the HM(23.6%) groups than in the others. Linoleic acid content tended to be relatively high in the LL(14.3%), h9L(14.3%) and HL(14.4%) groups. 3. The concentration of hemoglobin was significantly higher(P$lt;.05) in the LL(9.6 g/dL) groups, and lower in the LH (7.9 g/dL) and the HM(8.3 g/dL) groups than in the others, and the hematorit value showed a similar trend to the hemoglobin concentration. 4. The serum cholesterol contents were high in the treatments of low dietary energy regimes(160∼170 ㎎/dL), and low in the treatments of high dietary energy level during the first 3 weeks (140∼151 ㎎/dL) of the experiment. 5. The serum triglyceride concentration was significantly higher(P$lt;.05) in the high dietary energy treatments in the last 2 weeks (LH and MH). There were no significant differences in the serum phospholipid contents as affected by dietary energy level.