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RISS 인기검색어
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- 저자 : 한기영(K . Y . Han) (검색결과 5 건)
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질소 , 인산 , 가리 및 석회시용이 Korean Lespedeza ( Lespedeza stipulacea MAXIM ) 의 생장 , 수량 및 식물체성분과 토양성분에 미치는 영향
김창주 ( C J Kim ),윤익석 ( I S Yun ),한기영 ( K Y Han ),채현석 ( H S Chae ) 한국축산학회 1972 한국축산학회지 Vol.14 No.4
An experiment was carried out from June to August 1971 at Institute of Korean Grassland Development, Konkuk University to investigate how to effect N, P₂O_5, K₂O and CaO application on the growth, yields and plant components of Korean lespedeza(Lespedeza stipulacea M_(AXIM)) and on the soil components. The results were summarized as follows: 1. Lime and phosphate were definitly effective on the growth and yields. Phosphate was more effective than lime. 2. Nitrogen was not effective to the growth and yields. Abundunt application of nitrogen was thought to deter the growth and to decrease the yields. 3. Effects of potash were not appreciated when it was used alone, nevertheless the effects were apparent when it was used together with phosphate. 4. NPK Ca-plot showed the best growth and the largest yield among all plots(P$lt;0.05) Significant differences were not found among the plots of P, Ca, and NPK(P$gt;0.05). 5. Compound fertilization of P-K-Ca without N was thought to be more economical and effective. 6. Potash seems to act effectively in increasing root DM weight. 7. Percentages of the plant components were not changed significantly by fertilization. 8. Exchangeable Ca and K of the soil were increased by application of lime.
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항생제조합에 의한 소 정액내 Mycoplasma 와 Ureaplasma 억제에 관한 연구
한기영(K . Y . Han),(S . J . Shin),(H . L . Ruhnke) 한국축산학회 1991 한국축산학회지 Vol.33 No.3
Field studies on the new combination of antibiotics for the control of bovine Mycoplasmas and Ureaplasmas have been critically evaluated on bovine semen. Reference strains of Mycoplasmas and Ureaplasmas were standardized to 10^5 to 10^6 CFU (Colony Forming Units) and inoculated into raw semen. Then antibiotic combinations were added in each concentration on heated milk extender. Also, field samples were collected and treated with the combinations. The combinations of gentamicin (500㎍/ml) tylosin (100㎍ /ml) and Lincospectinomycin (300/600㎍/ml) has been proven to be very effective on the control of infections bacterial organismes of bovine semen for artificial insemination.
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미경산돈에서 교배전 자궁내 정액항원 주입에 의한 산자수 증가에 관한 연구
한기영(K . Y . Han),김창근(C . K . Kim),윤종택(J . T . Yoon),김형태(H . T . Kim),정영채(Y . C . Chung),서경덕(K . D . Seo),연정웅(J . W . Youn),이용우(Y . W . Lee) 한국축산학회 1988 한국축산학회지 Vol.30 No.9
This experiment was conducted to evaluate effect of a single intrauterine infusion of semen or seminal plasma at estrus before mating on subsequent litter traits of crossbred gilts. In addition, presence and level of early pregnancy factor activity (rosette inhibition titre, RITZ in serum of treated gifts and in vitro immunosuppressive activity of these antigens from boars used were tested immunologically to support the results in this experiment. The results obtained were as follows: 1. Semen-infused gifts significantly had a larger litter size (11.4) at birth than controls (9.6), but no significant differences were detected between others. 2. There was a tendency toward increased total pigs born alive, litter weight at birth and number of pigs suckling in antigen-infused gifts, but the differences between treated-gifts and controls were not statistically significant. 3. EPF activity (RIT) before and after mating in previously infused-gifts was 10.7±2.8 in the serum of nonpregnant gifts and 19.3±3.8 in the serum of pregnant gifts. RIT $gt; 14 could be considered evidence of presence of EPF in pregnant gifts. 4. Seminal plasma infusion before mating induced on obvious rise of RIT. RIT at 24 h and 48 h after mating was much higher (18-23 and 21-22) :in semen-and seminal plasma-infused gifts than in controls. RIT at 24 h after mating was found to be positively correlated (r=0.84) to litter size born in 6 gifts. 5. Dialyzed seminal plasma from 4 boars was significantly immunosuppressive at a concentration of 500 ㎍/㎖ than controls and degree of immunosuppression varied among individuals when the concentrations was under 500 ㎍/㎖. Undialyzed semen samples from 3 boars resulted in loss of immunosuppressive activity. These results indicate that infusion of gifts with semen at estrus before mating can be improved reproductive efficiency because of more litter size at birth and sukling pigs than controls and that these antigens had immunosuppressive potential of antilymphocyte serum and immunosuppressive activity to porcine lymphocytes that generate an immune response.
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서경덕(K . D . Seo),권관(K . Kwon),한기영(K . Y . Han),김선균(S . K . Kim) 한국축산학회 1989 한국축산학회지 Vol.31 No.5
The silver fox. a seasonal breeder of great economic importance, has a low reproductive efficiency in Korea. This study was carried out to obtain the basic data about the reproductive physiology of the silver fox being raised in Korea. A total of 135 litter in 1987, of which 83 were raised at Taekwanryung (N: 38.5°, E:128.8°),52 were at Yangsan (N:35.5°, E:129.0°), were used for this study. The vixens breeding started on January 27 and continued until March 25. The mode and mean was March 5 with an standard deviation of 18 days for vixens raised at Taekwanryung, while the breeding of vixens raised at Yangsan began February 16 with a standard deviation of 11 days. The mean date for mating of yearling was about a fortnight later them that of vixens of two and more than two of age which were all raised in two areas. The linear model was used to measure the effect of raising region, parity and the date of mating on litter size. The mean litters were 4.78±0.14 kits. The difference in litter size among 2 raising area, 2 parities and 4 dates of mating was not significant. However, the vixens raised in southern area, having the first parity and mating between March 1 and March 15 had more kits per litter than in the northern area, the 2nd parity and the other dates of mating.
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한국재래산양에서의 계절이 정소기능, 정자의 내동성 및 수정능력에 미치는 영향 II. 혈청내 Testosterone수준의 계절 및 하루중 변화
김창근,정영채,김광식,김수,권처진,한기영,윤종택,정영호,이장희,Kim, C.K.,Chung, Y.C.,Kim, K.S.,Kim, S.,Kwon, C.J.,Han, K.Y.,Yoon, J.T.,Chung, Y.H.,Lee, J.H. 한국동물번식학회 1994 Reproductive & developmental biology Vol.17 No.4
Seasonal and diurnal variation in serum testosterone was measured by radioimmunossary in 3 mature Korean native male goats. Blood was collected at 3-h intervals for 24h in each season. Mean levels of 4 seasons ranged from 0.82 to 2.06ng/ml and no difference was among seasons, although level in fall and winter was slightly higher. Diurnal level tended to increase at daytime in all season and when diurnal variation in level was compared to daily mean of each season, level of daytime greatly(P<0.05) increased in summer. However, variation between light and dark period in other seasons did not show significant difference. Daytime increase of testosterone was found 3 to 4 after dawn and level increased 1 to 2h ahead in summer and fall than that in others. These results in serum testosterone suggest that there was no great seasonal variation in endocrine function of goat testis.
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