경남지방의 젖소에 대한 내부기생충 조사

조희택,정규영,서명득,Cho, Hee-taek,Chung, Kyoo-young,Suh, Myung-deuk 대한수의학회 1986 大韓獸醫學會誌 Vol.26 No.2

This survey was conducted to investigate the prevalence of the internal parasites of Holstein cattle rearing in western Gyeongnam including Chinyang, Sachun, Namhae, Hadong, Sanchung, Hamyang, Geochang and Hapchun Area(Gun). A total of eight hundred and twenty five heads of Holstein cattle was randomly selected for the faecal examinations and the internal parasitisms were examined by floatation method using saturated salt solution and sedimentation method using 0.5% trio-soap solution. The relults obtained are summarized as follows: 1. The overall rate of internal parasite infections was 67.2% with infection of 554 cases and the non-infected rate was 32.8% with 271 cases from the total number of 825 samples. 2. A total fourteen species of parasites was identified from 825 faecal samples of Holstein cattle and the infection rate of each species of parasites was 3.0% in Haemonchus contortus, 2.7% in Cooperia spp., 1.8% in Bunostomum phlebotomum, 1.6% in Oesophagostomum radiatum, 1.2% in Ostertagia ostertagi, 1.0% in Trichuris bovis, 0.8% in Strongyloides papillsus, 0.4% in Nematodirus spp., 0.1% in Trichostrongylus spp., 57.3% in Paramohistomum spp., 31.2% in Fasciola hepatica, 0.6% in Eurytrema pancreaticum, 0.7% in Moniezia expansa and 5.1% in Eimeria spp. 3. The combined infection of internal parasites was 38.1% in single species, 27.0% in double and 2.1% in triple infections. 4. The EPG levels of each species of parasites were very low in all infected cases except trematodes showing no clinical symptoms.

돈(豚)콜레라 감염돈으로부터 분리한 Pasteurella 균에 관하여

조희택,강호조,마점술 경상대학교 축산진흥연구소 1975 畜産振興硏究所報 Vol.3 No.1

A microorganism was isolated from pig infected with hog cholera. The organism was identified for Pasteurella multocida type A by the biochemical properties, serological test and others. The pig was inapparently infected with the organism by the experimental infection and the antibodies were detected 20 days after infection. The organism was highly pathogenic in mice infected artificially.

광기술을 이용한 금속 표면 부식 측정 기초 연구

조희택(Cho HeeTaek),임옥락(Lim OkRak),이규혁(Lee KyuHyuk),장희진(Jang HeeJin),안태정(Ahn TaeJung) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11

반추수의 내부기생충에 대한 신종 광범위구충제의 구충효과 : 2. Ivermectin의 구충효과

이순선,조희택,서명득,Lee Soon-Sun,Cho Hee-Taek,Suh Myung-Deuk 대한수의사회 1987 대한수의사회지 Vol.23 No.11

This study was conducted to evaluate the anthelmintic efficacy of Ivermectin(Ivomec) against naturally infected gastrointestinal nematoeds, trematodes and cestode in Korean Native goats. Ivermectin was injected at a dose rate 0.2mg/kg of body weight subcu

유산양(乳山羊)과 유우(乳牛)의 혈청총단백량(血淸總蛋白量)에 관(關)하여

정순동,조희택,이영소,Chung, Soon Tong,Cho, Hi Taek,Rhee, Yong So 대한수의학회 1968 大韓獸醫學會誌 Vol.8 No.2

Observations were made to determine the effects of age and season upon the total serum protein values of milk goats(female) and milk cows fed in Korea. The results obtained in this work were summerized as follows; 1. In adults. the average concentrations of total serum protein of milk goats and milk cows were higher than in the younger, and were generally increased with the advance of age. The rate of increase in total serum protein value was more significant in the younger than that of adults. 2. The average concentrations of total serum protein of milk cows were significantly higher than those of milk goats. 3. Seasonal variation of total serum protein value was not observed in milk cows. 4. The average concentration of total serum protein of milk goat fed in Korea was much lower than that reported from the Occident, and this difference seemed to be influenced by the ration low in protein.

Rolling Ball Viscometer에 依한 乳牛의 準臨床型 乳房炎의 感染率에 關한 調査硏究

朴玉潤,曺熙澤 진주산업대학교 1984 論文集 Vol.22 No.-

This study was conducted to find out the infection rate of subclinical type and suspected positive of mastitis of dairy cows using Rolling Ball viscometer. The tested fore milk samples were collected from 1604 teats of 404 Holstein which their somatic cell number had more than 250,000 per mililiter, and these cows were selected from 241 farms located in Kyung­nam province for months from March 1984 to October 1984. The comatic cell number were measured by the viscometer, and the relation between the number of somatic cells of the sample and the cause factors of mastitis were examed, and the results obtained were as follows. 1. The sample which its somatic cell number has less than 250,000 denoted as negative infection was 26.9%, between 250,000 and 490,000 denoted as suspected positive infection was 28.6% and more than 500,000 denoted as positive infection was 24.5%. 2. In the case of the infection rate, 53.5% was infected among 404 cows and 26.0% was infected among 1606 teats. 3. In the test of suspected positive infection and subclinical type according to farm scale, the small scale farm(raising 1 to 10 cows per farm) has 54.7%, the medium scale farm(11 to 20 cows) has 43.5%, the large scale farm(21 to 30 cows) has 50%., and more than 31 cows per farm showed negative infection rate. The less scale farm showed the hiher the % of suspected positive infection. 4. In the case of suspected positive and subclinical type rate according to milking methods, it was 53.8% by milker and 28.6% by hand. 5. In the case of suspected positive and subclinical type rate according to disinfection by soaking the treats into the anticeptic solution after milking, the disinfected cows have 40.5% and nondisinfected cows have 64.8%. 6. In the case of suspected positive and subclinical type rate accoring to the type of administraters, It was 48.1% by ranchman and 89.7% by herd man. 7. In the case of suspected positive and subclinical type rate according to the number of years for raising the cows(personel experiences), It was 44.0% in the case of one year's experience, 45.1% in 2 to 3 years, 58.6% in 4 to 5 years and 69.1% in the case of more than 6 years of experience As the feeding experience increased the infection rate of subclinical type of mastitis was decreased.

Peroxidase-antiperoxidase(PAP) 복합체법을 이용한 돼지콜레라의 면역조직화학적 진단

문운경,조희택,김순복,Moon, Oun-gyeong,Cho, Hee-tack,Kim, Soon-bok 대한수의학회 1990 大韓獸醫學會誌 Vol.30 No.2

The present study was intended to use the peroxidase-antiperoxidase method for the identification of hog cholera virus(HCV) in the lymphatic organs of HCV-infected pigs. Sections were incubated with primary antibody (rabbit anti-HCV polyclonal or mouse anti-HCV monoclonal), followed by incubation with linkserum (goat anti-rabbit IgG) in excess and rabbit or mouse PAP complex. The viral antigen was localized mainly in the cytoplasms of lymphoid cells and macrophages. Positive reaction cells were frequently detected in the marginal areas of the germinal centers of the spleens, and also found in the tensils and lymph nodes. The method approved to be highly specific for the identification of the virus and allowed a precise localization of the viral antigen in infected cells.

설사자돈으로부터 병원성대장균, 캠필로박터속균 및 살모넬라속균의 분리동정

이주홍,조희택,김용환,강호조,차인호,Lee, Ju-hong,Cho, Hee-tack,Kim, Yong-hwan,Kang, Ho-jo,Cha, In-ho 대한수의학회 1988 大韓獸醫學會誌 Vol.28 No.1

This study was conducted to isolate etiological agents from the 103 scouring piglets in Gyeongnam area and also carried out antimicrobial drug susceptibility test and epidemiogical served. The incidence of scouring piglet was most prevalent as 81.6% in the age of 2 to 4 weeks after birth, while the rate was less than 10% in the age of 5 to 6 weeks and under 1 week after birch. When compared the isolation frequency of the each etiological agent, enteropathogenic E. coli was most prevalent as 46.6%, thermophilic Campylobacter 26.2% and Salmonellae was 8.7% in order. In the OK serotyping for 117 isolates of enteropathogenic E. coli, type 0141 : K85 (20.5%), 0157:K88ac(14.5%), 0138:K81 and 0149:K91 (13.3%) were encountered most frequently. In the biotyping for 27 isolates of thermophilic Campylobacter, most strains of C. jejuni were belong to type I (50.0%) and II (25.0%), and most strains of C. coli were belong to biotype I (78.9%). In the serotyping for 9 strains of Salmonellae, 3 strains were grouped as D, 2 strains as C. and each 1 strain was group B and E. The other 2 strains were untypable. The 117 isolates of enteropathogenic E. coli were resistant more than 90% to erythromycin, penicillin, tetracycline and streptomycin, wherease about 90% of the isolates were sensitive to kanamycin and gentamicin. In the case of Salmonellae, all of the isolates were resistant to penicillin, but about 89% of the isolates were sensitive to gentamicin and colistin. All of C. jejuni and C. coli isolates were resistant to cephalothin, but more than 89% of C.jejuni and C. coli were sensitive to kanamycin and gentamicin.

오제스키병의 생체 조기진단을 위한 돼지 비세포 및 순환백혈구내 면역세포화학적 바이러스 항원동정

문운경,조희택,김순복,서정향,Moon, Oun-kyong,Cho, Hee-tack,Kim, Soon-bok,Sur, Jung-hyang 대한수의학회 1993 大韓獸醫學會誌 Vol.33 No.2

Forty day old piglets were intranasally inoculated with 2ml of Aujeszky's disease virus (NYJ-1-87 strain, $10^{7.0}$ $TCID_{50/0.2}ml$), and the viral antigens were detected in nasal and circulating white blood cells for 20 days after inoculation by immunocytochemical method. Antibody titers in the blood were also detected by neutralizing test and Aujeszky's disease serodiagnostic kit(Choong Ang) in this periods. 1. Viral antigens were detected by the immunocytochemical technigue, and positive reactions were observated in nasal cells from the 2nd to the l0th days after inoculation and circulated white blood cells from the 4th to the 12th days after inoculation. 2. In neutralization test antibodies levels showed titers of 2 on the 8th day, 8 on the l5th day, 16 on the 18th day and 32 on the 20th day after inoculation. In serodiagnostic kit test positive reactions were observed after the 15th day after inoculation.

Antifungal susceptibility of Candida spp isolated from bovine mammary glands and teat cups of milking machines

여상건,정규영,조희택,Yeo, Sang-geon,Chung, Kyu-young,Cho, Hee-tack The Korean Society of Veterinary Science 1989 大韓獸醫學會誌 Vol.29 No.1

준임상형 유방염 이환 젖소의 유즙과 유두컵으로부터 분리된 Candida속 균의 8종 항진균성약제에 대한 감수성을 조사하였던 결과는 다음과 같다. 총 53주의 Candida속균 중 98.2%, 94.4%, 84.8%의 균주가 각각 clotrimazole, econazole, miconazole의 농도 $25{\mu}g/ml$이하에서 발육이 억제됨으로서, 이들 약제의 항균력이 타 약제에 비하여 우수하였다. 균종별로 보면 C albicans는 clotrimazole에 대한 감수성이 가장 높았으며, 기타 비교적 감수성이 높았던 약제는 5-fluorocytosine, econazole, miconazole의 순이었다. C pseudotropicalis와 C guilliermondii는 haloprogin, clotrimazole, miconazole, econazole, 5-fluorocytosine등에 높은 감수성을 나타내었으며, haloprogin의 평균 MIC가 $0.17{\sim}0.19{\mu}g/ml$로 가장 우수하였다. C krusei는 cycloheximide에 대한 감수성이 가장 높았으며, 그의 비교적 감수성이 높았던 약제는 clotrimazole, haloprogin, miconazole, econazole의 순이었다. 한편 C parapsilosis는 econazole, cycloheximide, clotrimazole등에 다소 감수성을 나타내었으나, 이들 약제의 MIC는 econazole(기하평균 MIC $7.26{\mu}g/ml$)을 제외하고는 타균종에서 보다 현저히 낮았다. 또한 C tropicalis는 전 공시약제에 대하여 감수성이 낮은 경향이었다. In vitro antifungal susceptibility test was carried out on 53 strains of Candida spp isolated from milk of dairy cows with subclinical mastitis and teat cups of milking machines, Nystatin, clotrimazole, miconazole, econazole, 5-fluorocytosine, cycloheximide, haloprogin and griseofulvin were tested by the agar dilution method. The 84.8% to 98.2% of Candida strains were inhibited by clotrimazole, econazole and miconazole at $${\leq_-}25{\mu}g/ml$$, and clotrimazole was most active. Interspecies differences of antifungal susceptibility were recognized and these were as follows. C albicans was most sensitive to clotrimazole (GM-MIC, $5.49{\mu}g/ml$) followed by 5-fluorocytosine, econazole and miconazole. C pseudotropicalis and C guilliermondii were notably sensitive to haloprogin, clotrimazole, miconazole, cconazole, 5-fluorocytosine, and haloprogin (GM-MIC, $0.17{\sim}0.19{\mu}g/ml$) was most active. C krusei was most sensitive to cycloheximide (GM-MIC, $0.54{\mu}g/ml$) followed by clotrimazole, haloprogin, miconazole and econazole. C parapsilosis was somewhat sensitive to econazole, cycloheximide, clotrimazole, and econazole (GM-MIC, $7.26{\mu}g/ml$) was most active. C tropicalis showed very low sensitivity to all tested drugs (GM-MIC, $${\geq_-}20.32{\mu}g/ml$$).