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Staphylococcus에 기인(起因)하는 초생추(初生雛)의 부종성피부염(浮腫性皮膚炎) 발생례(發生例)에 대(對)하여
최원필,박청규,이현범,Choi, Won Pil,Park, Cheong Kyu,Lee, Hyun Beom 대한수의학회 1974 大韓獸醫學會誌 Vol.14 No.2
The authors observed typical skin form of avian staphylocorcosis in 12 day-old-chickens which were kept on the floor. The lesions observed were edematous, necrotic and crusty dermatitis on the wings, the head, the neck and the other parts of the body. Delta hemolytic type Staphylococcus aureus and Herellea were isolated from the lesions of each bird examined.
축우의 유산에 관여하는 Aspergilli에 관한 연구
최원필,권해병,여상건,Choi Won Pil,Kwun Hae Byeng,Yeo Sang Geon 대한수의사회 1980 대한수의사회지 Vol.16 No.11·12
The purposes of this study were to determine the incidence of the abortion and vaginitis due to Aspergilli and to research the Aspergilli in the vaginal exudates from apparently healthy dairy cows in the Gyeongbug area. Fetuses from 13 aborted cows, vagin
최원필,이희석,여상건,이헌준,정석찬,Choi, Won-pil,Lee, Hi-suk,Yeo, Sang-geon,Lee, Hun-jun,Jung, Suk-chan The Korean Society of Veterinary Science 1986 大韓獸醫學會誌 Vol.26 No.2
1984년 5월부터 1985년 5월까지 대구(大邱), 경북(慶北), 경남(慶南) 및 충남지역(忠南地域) 7개(個) 양돈장(養豚場)의 자돈(仔豚) 및 성돈(成豚)의 분변(糞便) 및 양돈장(養豚場)의 흙, 하수(下水), 사료(飼料), 추비(推肥), 쥐 등 7,440예(例)와 대구시(大邱市) 도축장(屠畜場)의 도축돈(屠畜豚) 장간막임파절(腸間膜淋巴節) 및 직장내용물(直腸內容物) 555예(例)로부터 분리(分離)한 319주(株)의 Salmonelia속균(屬菌)을 대상으로 항균제(抗菌劑)에 대한 내성(耐性) 및 전달성(傳達性) R plasmid의 분포상황(分布狀況)을 조사(詞査)하였던 바 그 결과(結果)는 다음과 같다. 1. 공시균(供試菌) 319주(株) 중(中) 250주(株)(78.4%)가 ampicillin(An), chloramphenicol(Cm), gentamicin(Gm), kanamycin(Km), nalidixic acid(Na), rifampicin(Rf), streptomycin(Sm), sulfadimethoxine(Su), 또는 tetracycline(Tc)에 내성(耐性)을 나타내었으며, 약제별(藥劑別)로는 Su(74.9%), Sm(53.0%) 및 Tc(28.5%)에 높은 내성(耐性)이 인정(認定)되었다. 2. 내성균(耐性菌) 250주(株)의 전달성(傳達性) R plasmid 보유율(保有率)은 51.2%(128주(株))였으며, 약제별(藥劑別)로는 Am경우 100%, Tc 92. 3% 및 Cm 75.0% 순으로 보유율(保有率)이 높았다. 3. 내성균(耐性菌) 250주(株)의 내성양상(耐性樣相)은 SmSu(91주(株)), Su(59주(株)) 및 TcSmSu(50주(株))내성형(耐性型)이 대부분이었고 R plasmid 전달후(傳達後)의 내성양상(耐性樣相)은 TcSmSu(40주(株)) 및 TcSu(28주(株)) 내성형(耐性型)이 많았다. 4. 양돈장별(養豚場別) 내성균(耐性菌) 출현빈도(出現頻度)는 48.0~93.6%로 다양(多樣)하였고, 전달성(傳達性) R plasmid 보유율(保有率)은 0~77.8%로 내성균(耐性菌) 출현빈도(出現頻度)와 일치(一致)되지 않았다. 5. 공시균(供試菌) 319주(株) 중(中) 각각(各各) 2주(株)는 Rf 및 Gm에 대해 내성(耐性)을 나타내었고, 내성균(耐性菌) 250주(株) 중(中) 73.2%(183주(株))가 다제내성(多劑耐性)이었으므로 Salmonella의 다제내성화(多劑耐性化) 경향(傾向)이 있었다. 6. 내성균(耐性菌) 250주(株) 중(中) R plasmid 전달후(傳達後) 5주(株)는 TcAmCmSmSu내성형(耐性型), 1주(株)는 TcAmKmSmSu내성형(耐性型)임이 확인되었다.
축우(畜牛)에서의 Corynebacterium renale의 분포(分布)
최원필,박청규,이현범,Choi, Won-Pil,Park, Cheong-Kyu,Lee, Hyun-Beom 대한수의학회 1976 大韓獸醫學會誌 Vol.16 No.1
An attempt was made by the authors to survey the distribution of C. renale in apparently healthy Korean male cattle and dairy cattle, and to determine the types of C. renale isolated in Korea. A total of 153 urine samples and 240 vaginal smears were collected from 253 cows for examination, and 124 urine samples of Korean cattle were investigated. Of them, one case showed cystitis symptoms. The results obtained are summarized as follows: 1. The organism was detected from 8(6.5%) of 124 specimens of Korean cattle. The isolates studied in this survey belonged to type I (4.1%), type III (1.6%) and untypable(0.8%) of C. renale. 2. The rate of isolation of C. renale was 7.5% (19 of 253 individuals) in apparently healthy cow. The 26 strains isolated from the 19 dairy cattle belonged to type I (38.5%), type II (26.9%), type III (24.6%) and untypable(11.5%) in the serological classification. From the cow with clinical cystitis, type III strain was isolated. 3. It appears that the isolation rate depends on the history of pasture rather than the number of cattle; higher percentages were detected from the pasture which had fed for longer period. 4. From the findings mentioned above, it is clear that three types of C. renale were distributed in the apparently healthy Korean and dairy cattle in Korea. And this is the first report on the isolation and distribution of C. renale in Korea.
최원필,이희석,여상건,이헌준,채태철,Choi, Won-pil,Lee, Hi-suk,Yeo, San-geon,Lee, Hun-jun,Chae, Tae-chul 대한수의학회 1988 大韓獸醫學會誌 Vol.28 No.2
This paper dealt with the distribution of Salmonella (S) infection on 4 herds in Kyungju and Taegu during the period from May to October 1986. Isolated Salmonella were examined for serotypes, antimicrobial drug resistance and detection of R plasmid. The results obtained were summarised as followings: 1. Of total 4.622 samples from 4 herds, 67 Salmonella were isolated from 51 samples(1.1%), and their serovar strains were S typhimurium 6, S derby 5, S infantis 4, S bareilly 4, S dublin 3, S anatum 2, S montevideo 2 and untypable 41. 2. The isolation rate of Salmonella was higher in summer and autumn. 3. Of the 67 strains examined, 45 (67.2%) were resistant to one or more antibiotics, such as ampicillin (Am), cephalothin (Ce), chloramphenicol (Cm), rifampicin (Rf), sulfadimethoxine (Su), and tetracycline (Tc), and higher resistant to Sm (40.2%), Ce (31.3%), Am (23.9%). 4. Of the 45 resistant Salmonella strains, 44 (97.8%) harbored conjugative R plasmids and the transfer frequency of Sm (100%), Ce (95.2%), Tc (91.0%) and Su (80.0%) resistance was much higher than that of the other drug resistance. 5. The most common resistant patterns were Sm, Ce, AmCeCmSmSuTc, and AmCe. 6. In 4 herds, the incidience of drug resistance was 57.7%~100% and transfer frequency of conjugative R plasmid was 96.1%~100%.
한우(韓牛)에 집단발생(集團發生)한 백선균증(白癬菌症)에 관한 연구(硏究)
최원필,여상건,이현범,Choi, Won Pil,Yeo, Sang Geon,Lee, Hyun Beom 대한수의학회 1979 大韓獸醫學會誌 Vol.19 No.2
This experiment was undertaken to determine the causative agent of dermatophytosis occurred in Korean native cattle. A total of 54 cases were examined, of which 52 were derived from a herd and the others from market. Direct microscopic examination, culture and pathogenicity test were performed for the samples (hairs and scales) obtained from the skin lesions of the affected cattle. The causative agent was identified as Trichophyton verrucosum exclusively in these cases.
국내 돼지와 개에서 분리된 Yersinia속균의 병독성 관련 plasmid
최원필,이헌준,정석찬,Choi, Won-pil,Lee, Hun-jun,Jung, Suk-chan 대한수의학회 1989 大韓獸醫學會誌 Vol.29 No.2
Nine strains of Yersinia species isolated from pigs and dogs in Korea, comprising 5 strains of Yersinia enterocolitica, 2 strains of Y kristensenii and each strain of Y pseudotuberculosis and Y intermedia, were examined for the presence of virulence-associated plasmids, calcium dependency and provocation of guinea pig conjuntivitis($Ser{\acute{e}}ny$ test). Three strains of Y enterocolitica isolated from pigs were positive in calcium dependency and harbored one plasmid of about 45 megadalton, but negative in $Ser{\acute{e}}ny$ test.
최원필,이희석,여상건,이헌준,정석찬,Choi, Won-pil,Lee, Hi-suk,Yeo, San-geon,Lee, Hun-jun,Jung, Suk-chan 대한수의학회 1989 大韓獸醫學會誌 Vol.29 No.2
This paper deals with the genetic properties of R plasmids in Salmonella originated from pigs and cattle. The plasmid DNA was examined for incompatibility, stability and fertility inhibition(Fi), and gel electrophoresis was performed for isolation of plasmid DNA. The results obtained were summerized as follows: 1. Among the 66 conjugative R plasmids from 44 pigs and 22 cattle, 61 R plasmids (92.4%) were $Fi^-$, whereas the remainder were $Fi^+$. 2. The Inc groups of 66 R plasmids were determined with 7 standard plasmids. Twenty-six R plasmids were classified into Inc group $I{\alpha}$, H1, H2 or F1, 40 R plasmids being not classified with standard plasmids used, and the Inc group $I{\alpha}$ (57.7%) was most frequent. 3. Inc groups $I{\alpha}$, H1, and F1 were identified in strains from swine, Inc groups H2 and F1 from cattle. 4. The plasmid DNA profiles in 16 Salmonella isolated from pigs and cattle were confirmed as being 1 to 10 fragments by the gel eletrophoresis. Their molecular weight ranged 1.0 to 90 megadalton. 5. The molecular weight of conjugative plasmids ranged 1.0 to 80 megadalton in 4 Salmonella (P-4, P-5, P-7 and P-8) isolated from pigs.
돈(豚)에서 분리(分離)한 Shigella균유래(菌由來) R plasmid의 유전적(遺傳的) 특성(特性)에 관한 연구(硏究)
최원필,권해병,정석찬,Choi, Won-pil,Kwun, Hae-byeng,Jung, Suk-chan 대한수의학회 1989 大韓獸醫學會誌 Vol.29 No.1
This paper dealt with the distribution of Shigella spp. on 5 piggeries in Taegu and Kyungpook during the period from August to October 1987. Isolated Shigella were examined for serogrouping, antimicrobial drug resistance and detection of R plasmid. Genetic properties of R plasmid in Shigella have examined to fertility inhibition (Fi) and gel electrophoresis was performed for the isolation of plasmid DNA. The results obtained were summarised as followings; 1. Of total 2,978 samples from 5 piggeries, 82 strains (2.8%) of Shigella spp. were isolated from 82 samples. The isolated strains were identified as S dysenteriae (60 strains), S flexneri (20 strains) and S sonnei (2 strains). 2. Of the 82 strains examined 67 (95.1%) were resistant to one or more antibiotics, such as ampicillin (Am), chloramphenicol (Cm), kanamycin (Km), nalidixic acid (Na), rifampicin (Rf), streptomycin (Sm), sulfademethoxine (Su), and tetracycline (Tc) and higher resistant to Su (90.2%), Sm (63.4%) and Tc (63.4%). 3. Of the 78 resistant Shigella strains 26 (33.3%) harbored conjugative R plasmids and the transfer frequency of Sm (50.0%), Cm(33.3%) resistance was much higher than that of the other drug resistance. 4. The most common resistant patterns were SmSuTc, Su and AmSmSuTc. 5. Out of the 26 Shigella R plasm ids examined for Fi, 14(53.8%) were $Fi^+$ and the remainder were $Fi^-$. 6. The plasmid DNA profiles in Shigella spp. (9 strains) isolated from pigs were confirmed as being 2 to 9 fragments by the gel electrophoresis. Their molecular size ranged 2.17 to 87.62 kilobase (Kb). All strains of Shigella spp. consisted in 15.4 Kb plasmids.
유우질내(乳牛膣內)의 Aerobic Actinomycetes 의 분포(分布)
최원필,권해병,Choi, Won-Pil,Kwun, Hae-Byeng 대한수의학회 1982 大韓獸醫學會誌 Vol.22 No.1
A bacteriological survey was made for the aerabic Actinonmycetes from the vaginal exudates of apparently healthy dairy cows in Gyeongbug area. One hundred twenty isolated were made from 1,328 cows. Among them 30 isolates (25%) were identified as Nocardia asteriodes, 4 (3.3%) as Nocaradia brasiliensis, and 2 (1.7%) as Nocardia madurae. The remaining 84 isolates (70%) were identified as Streptomyces species.