보폭확장 훈련이 100m 기록에 미치는 영향

박창식,홍관이 江原大學校附設體育科學硏究所 1994 江原大學校附設體育科學硏究所論文集 Vol.- No.18

For know what effects the stride-length enlargement training has on 100m record, I studied with 30 non-athlete boys, the first grade of C middle school in Chol-Weon province. For 8 weeks, I was intended to analysis the improvement degree about every week and every distance and the results of this study are as follows. 1. Free style group showed high increasing records. 2. The stride-length enlargement training hadn't great effects, but stride constant group had a effect on the pitch decrease and the improvement of record. 3. stride decreasing group didn't have a good effect on 100m record. Based on the results above, to the boys who are non-athletes and lower-grades, stride decreasing group had little effects in the

이비인후과 영역에 발생한 양성 혼합종의 임상적 고찰

박창식,정평귀,김석천,조중생,안희영,차창일 대한이비인후과학회 1993 대한이비인후과학회지 두경부외과학 Vol.36 No.3

돼지 황체에서 TNFα-분비 대식세포와 내피세포에 관한 면역조직화학적 연구

박창식,한승로,김수일,조근자,김원식 한국동물자원과학회 2005 한국축산학회지 Vol.47 No.5

Pellet飼料의 給與가 병아리의 代謝에너지와 窒素蓄積에 미치는 影響

朴昌植,權純夔,閔泰赫 충남대학교 농업과학연구소 1983 農業技術硏究報告 Vol.10 No.2

This study was carried out to compare the feed utilization between pelleted and all-mash diet of similar composition by growing chickens. Day-old broilers(Hubbard) and egg-type chickens(Hy-line) of commercial strain were employed in this experiment. The results obtained were summarized as follows. 1. The chickens fed pelleted diets were heavier than those of birds fed all-mash diets. The Hubbard broilers and Hy-line chickens fed pelleted diets weighed 2,702g and 812g respectively, at 9 weeks of age. In comparison, the Hubbard broilers and Hy-line chickens fed all-mash diets weighed 2,571g and 777g respectively, at 9 weeks of age. 2. The pellet-fed chickens consumed more feeds than birds fed all-mash diets in both types of strain. Feed efficiencies(gain/feed) of Hubbard and Hy-line chickens were 0.38 and 0.26 in pellet feeding groups, and 0.36 and 0.25 in all-mash feeding groups, respectively. The Hy-line chickens fed pelleted diets drank more water than birds fed all-mash diets. 3. Pellet feeding groups produced more dry matter excreta as compared with all-mash feeding groups, reflecting the pattern of feed consumption by these chickens. Nitrogen retention ratio of the Hubbard and Hy-line chickens were 57-67% and 65-73%, respectively. Chickens fed pelleted diets showed 1-4% higher nitrogen retention than chickens fed all-mash diets. 4. The ME/GE ratio of the Hubbard and the Hy-line at 8 weeks of age were 73.4-74.3% and 82.8-83.8%, respectively. Pellet feeding groups showed 1% higher ME/GE ratio than all-mash feeding groups. 5. The dietary productive energy calculated from respiratory quotient was 94.1-102.6kcal/kg^¾ BW/day in pellet feeding groups. The ratios of PE/GE were 41.3-48.9% in pellet feeding groups and 39.0-45.8% in all-mash feeding groups. 6. It appears that pelleting the all-mash diet increases feed consumption and body weight gain of growing chickens. Feed efficiency and energy utilization were also improved by pelleting process. More research work should be done to establish the relationship clearly between feed pelleting and heat increments.

성대마비

朴昌植,安會英 임상약학사 1992 臨床藥學 Vol.12 No.1

經營合理化와 生産性向上

朴昌式 한양대학교 경영대학 학생회 1974 商岳 Vol.- No.2

Comparision of Preservation of Liquid Boar Semen between Lactose-Egg Yolk and $B\ddot{u}tschwiler$ Diluents

박창식,천용민,서직,Park, C.S.,Cheon, Y.M.,Xu, Z. The Korean Society of Animal Reproduction 1996 Reproductive & developmental biology Vol.20 No.2

This study was done to find out the methods of long-term use of liquid boar semen in 100 ml plastic bottle for artificial insemination and to investigate differences between Lactose-Egg yolk and Biitschwiler diluents according to storage temperature, and effect of final glycerol concent ration in Lactose-Egg yolk diluent. Liquid boar semen diluted with Lactose-Egg yolk diluent showed significantly higher sperm motility (p<0.05) after 0.5 and 2h incubation at 37$^{\circ}C$,than Butschwiler diluent at all storage length when it was preserved in the 5$^{\circ}C$ refrigerator. The NAR acrosome in Lactose-Egg yolk diluent a after 0.5 and 2h incubation at 37$^{\circ}C$, respectively, during preservation periods was similar to that in Biitschwiler diluent. When liquid boar semen was preserved at 15$^{\circ}C$, liquid boar semen in the Butschwiler diluent showed significantly higher percentages of sperm motility and NAR acrosome from third day to seventh than that in Lactose-Egg yolk diluent. In the effect of final glycerol concentration of liquid boar semen in the Lactose-Egg yolk diluent, the final glycerol concentration of 2% showed higer percentages of sperm motility and NAR acrosome than that of 0, 1, 3, and 5%. Farrowing rate, litter size and average pig weight at birth did not differ significantly between Lactose-Egg yolk and But schwiler diluents. As a result of this study, we found out that liquid boar semen can be stored for 6-7 days at 5$^{\circ}C$ in Lactose-Egg yolk diluent and at 15$^{\circ}C$ in Butschwiler diluent.

미경산 순종 및 이품종간 교잡종 돼지의 임신 및 분만시에 성 Hormone 수준에 관한 연구

박창식,이규승 ( Chang Sik Park,Kyu Seung Lee ) 한국축산학회 1983 한국축산학회지 Vol.25 No.6

The present study was carried out to compare the reproductive performance and the serum concentrations of peptide and steroid hormones between the Landrace and the two-breed cross [(Large White ♂ x Landrace ♀) F₁] in the gilt from 15 days after mating to 10 days postpartum. Five gilts of the Landrace and the two-breed cross, respectively, were used for collection of blood samples. FSH, LH, prolactin, estradiol-173, progesterone and cortisol were assayed by radioimmunoassay methods. The results obtained in this study are as follows. 1. The two-breed cross gilt was 9.1 days faster in age at puberal estrus, 1.4 heads larger in number of pigs born alive per litter and number of live pigs at 21 days, 2.9 ㎏ heavier in total litter weight at birth, and 14.3 ㎏ heavier in total litter weight at 21 days than the Landrace gilt. 2. The serum FSH concentrations from 15 days after mating to 10 days postpartum ranged from 1.35 to 1.80 mIU/㎖ in the Landrace and from 1.30 to 1.80 mIU/㎖ in the two-breed cross. But the significance was not recognized between the Landrace and the two-breed cross. 3. The LH concentrations ranged from 2.2.0 to 4.35 mIU/㎖ in the Lardrace and from 2.45 to 3.75 mIU/㎖ in the two-breed cross. But we did not find any differences between the Landrace and the two-breed cross. 4. The prolactin concentrations between the Landrace and the two-breed cross did not find any differences but they showed significant fluctuation during pregnancy. 5. In the Landrace and the two-breed cross, the estradiol-1.7β concentrations increased from 27.20 pg/㎖ and 27.56 pg/㎖ at 15 days after mating to 620.15 pg/㎖ and 652.80 pg/㎖ at the time of parturition, respectively. 6. The progesterone concentrations in the Landrace were higher than those in the two-breed cross from 15 to 30 days after matings, and vice versa from 75 to 105 days after mating. The concentrations in the Landrace decreased from 38.90 ng/㎖ at 15 days after mating to 16.85 ng/㎖ at 105 days after mating and rapidly declined at the time of parturition until the levels (1.35 ng/㎖) were reached. The concentrations in the two-breed cross ranged from 24.0 ng/㎖ to 21.1 ng/㎖ and then rapidly dropped at the time of parturition. 7. The cortisol concentrations (from 34.5 to 50.0 ng/㎖) in the two-breed cross were significantly higher than those (from 13.0 to 24.5 ng/㎖) in the Landrace throughout the pregnancy.

종모돈의 정액성상, 동결-융해 후 정자의 생존성, 혈청 중 FSH, LH, Estradiol-17β 및 Testosterone 농도에 미치는 품종과 계절의 영향

박창식,성낙도,김철호,진동일,최양석,이영주 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

본 연구는 종모돈의 정액성상,동결-융해 후 정자의 생존성 그리고 혈청 중 FSH,LH,estradiol-17β 및 testosterone 농도에 미치는 품종과 계절의 영향을 조사하여 우수한 종모돈의 손발을 위한 기초자료를 얻고자 실시하였다. 요크셔 종이 듀록종보다 봄,여름,가을,겨울에서 정액량이 많았으며,정액농도에서는 차이가 없었다. 계절별 정액량은 듀록 및 요크셔종에서 봄철이 여름,가을 및 겨울철에 비하여 많았고,정자농도는 차이가 없었다. 듀록종과 요크셔종에서 각각 봄철에 생산한 정자가 여름,가을 및 겨울철에 생산한 정자보다 동결-융해 후 정자운동성 및 정상첨체 비율이 높았다. 한편 듀록종과 요크셔종에세 동결-융해 후 정자운동성은 모든 계절에서 요크셔종이 높게 냐타났으나,정상첨체에서는 차이가 없었다. 혈청 중 FSH의 농도를 비교한 결과 요크셔종이 듀록종보다 모든 계절에서 낮은 농도를 나타내었다. 그러나 두 품종 모두에서 각각 계절 간애 차이가 없었다. 혈청 중 LH와 estradiol-17β의 농도를 비교한 결과 요크셔종과 듀록종 간에 차이가 없었다. 또한 두 품종 모두에서 계절 간에 차이가 없었다. 종모돈의 품종별,계절별 혈청 중 testosterone의 농도를 비교한 결과 요크셔종이 듀록종보다 모든 계절에서 높게 나타났다. 또한 두 품종 모두에서 각각 봄철이 여름,가을 및 겨울철에 벼하여 혈청 중 testosterone의 농도가 높은 것으로 나타났다. 이상의 결과를 종합하여 보면,FSH의 농도가 낮을수록 정액생산량이 높은 것으로 나타났으며,혈청 중 testosterone의 농도가 높을수록 동결-융해 정자의 운동성 및 정상첨체의 비율이 높은 것으로 나타났다. This study was carried out to investigate. the effects of semen characteristics, frozen-thawed sperm viability and serum FSH, LH, estradiol-l7β and testosterone concentrations between breeds and among seasons in boars. In all seasons, Yorkshire boars produced higher semen volume compared with Duroc boars, whereas sperm concentration did not differ significantly between Duroc and Yorkshire boars. Semen volume in spring was higher compared with summer, autumn and winter in both Duroc, and Yorkshire boars, but sperm concentration did not differ significantly among seasons. Sperm motility and normal acrosome rate of frozen-thawed sperm produced in spring were higher than those in summer, autumn and winter in both Duroc and Yorkshire boars. Sperm motility of frozen-thawed sperm in Yorkshire boars was higher than that in Duroc boars regardless of seasons. However, normal acrosome rate did not differ significantly between Duroc and Yorkshire boars. Serum FSH concentration in Yorkshire boars was lower than that in Duroc boars in all seasons. However, there were no significant differences on serum FSH concentration of Duroc and Yorkshire boars among seasons. Serum LH and estradiol-l7β concentrations did not differ significantly between Duroc and Yorlcshire boars. Also, there were no significant differences in serum LH and estradiol-l7β concentrations of Duroc and Yorkshire boars among seasons. Serum testosterone concentration in Yorkshire boars was higher than that in Duroc boars in all seasons. In both breeds, serum testosterone concentrations were higher in spring than in summer, autumn and winter. In conclusion, when serum FSH concentrations were low, semen volumes were high, and when serum testosterone concentrations were high, sperm motility and normal acrosome rate of frozen-thawed sperm were high.

돼지 卵母細胞의 體外成熟 및 體外受精時 培養液과 液狀精液의 效果

朴昌植,李揆丞,朴炳權,張學奎,李義海,徐直 한국동물생명공학회(구 한국동물번식학회) 1997 Reproductive & developmental biology Vol.21 No.1