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윤화중,정길생,Yoon Hwa-Joong,Chung Kil-Saeng 대한수의사회 1983 대한수의사회지 Vol.19 No.7
The authors made a survey on the species and distribution of internal parasites in domesticated deer. Total 75 specimen which collected from Seoul City, Gyeonggi Do, Kangwon Do and Chung-Nam Province were carried out for the actual condition of parasitic
소의 주근포자충에 관한 연구 -(제 II 보) : 심장, 간장, 신장, 설, 횡격막 및 교근내 주근포자충의 조사연구-
윤화중,라성안,Yoon Hwa-Joong,Ra Seong-An 대한수의사회 1988 대한수의사회지 Vol.24 No.2
One hundred eighteen cattle in the slaughter houses of kyeong ki-do were examined for Sarcocystis cruzi using macroscopic and microscopic method of detection. Sausage-shaped Sarcocystis were detected from the heart, diaphragm, tongue, masseter, liver, kid
사료내 곰팡이 발육 억제제의 효과에 관한 연구 - Mold-X의 효과에 관한 연구 -
윤화중,장경진,김태종,원송대,Yoon Hwa Joong,Chang Kyung Jin,Kim Tae Jong,Won Song Dae 대한수의사회 1982 대한수의사회지 Vol.18 No.7
In the experiments of the inhibition of mold growth from October 1, 1981 to March 31, 1982, Mold-X has been shown the effective results as follows; 1. In the storage of the corn and the corn meal contained $12\%$ moisture, the growth of mold wa 본 연구팀은 1981년 10월 부터 1982년 3월까지 시행한 광범위 곰팡이 발육억제제인 Mold-X의 효과에 관한 시험을 시행한 결과 그 성적을 요약하면 다음과 같다. 1. $12\%$의 수분함량이 함유된 옥수수와 옥수수가루 저장에 있어서의 250ppm수준의 Mold-X가 곰팡이의 발육을 억제하였다. 2 수분이 많이 함유된 배지에서 곰팡이의 발육을 억제할 수 있는 Mold-X의 함량은 500ppm수준이었다.
윤화중,장경진,김태종,Yoon Hwa-Joong,Chang Kyoung-Jin,Kim Tae-Jong 대한수의사회 1983 대한수의사회지 Vol.19 No.7
Strains of Aspergillus flavus produced aflatoxin $B_1$ was found in the corns for eed and cultured them in the incubator. The aflatoxin $B_1$ was produced from the Aspergilli and intubated into the pharynx of the ducklings for the to
유산동(硫酸銅) 중독(中毒)이 랫트 간장(肝臟)의 미세구조(微細構造)에 미치는 영향(影響)
윤화중,이상목,장병준,Yoon, Hwa-joong,Lee, Sang-mog,Jang, Byoung-joon 대한수의학회 1990 大韓獸醫學會誌 Vol.30 No.1
This study was designed in order to investigate the effect of copper sulfate to the ultrastructural changes of the hepatocytes in Sprague Dawley rats. The animals were administered with copper sulfate (10mg/kg B.W.), which was dissolved in normal saline. The solution was injected into abdominal cavity every day. The animals were sacrificed at the 6th, 12th, and 24th day from the beginning of administration. The specimens obtained from the liver were observed with electron microscope and significant changes were as follows. 1. A prominent dilatation and disruption of the cisternae of rough endoplasmic reticulum were recognized. Also, the detachment of membrane bound ribosomes was shown. 2. The proliferation of smooth endoplasmic reticulum and the depletion of glycogen particles were noted. 3. The increase of primary lysosomes and autophagic vacuoles was obserbed. 4. The dilatation of mitochondrial cristae was obserbed. And it was irregulary scattered in the stroma of mitochondria. 5. The atrophy of microvilli in the bile canaliculi and space of Disse was prominent. 6. Membrane of hepatocytes was damaged and significant hydrophic degeneration was obserbed in the perisinusoidal regions. 7. The damage of Fat-storing cells was more significant than that of hepatocytes.
사료내 Ochratoxin A에 의한 돼지의 현장에 관한 연구
윤화중,원송대,김태종,김진석,예재길,Yoon Hwa-Joong,Won Song-Dae,Kim Tae-Jong,Kim Jin-Suk,Ye Jae-Gil 대한수의사회 1984 대한수의사회지 Vol.20 No.4
For detection of the swine were intoxicated with ochratoxin A, the swine were consumed with the feed contained ochratoxin A. The lesions and microscopical appearances of the swine will be the characters to detect the swine were intoxicated with ochratoxin
윤화중,Yoon, Hwa Joong The Korean Society of Veterinary Science 1975 大韓獸醫學會誌 Vol.15 No.1
한국산 aflatoxin의 독성을 비교 규명하기 위하여 결정 aflatoxin, 사료배합 aflatoxin 및 표준 aflatoxin을 오리병아리에 각 1회씩 경구투며 또는 급식시켜 얻은 결과는 다음과 같다. 1. 각종 aflatoxin의 독성으로 인하여 유발된 공통된 주요 병리조직학적 병변은 출혈(出血), 간세포(肝細胞)의 괴사(壞死), 지방변성(脂肪變性) 및 담관세포(膽管細胞)의 증식(增殖) 등이였다. 2. 병변(病變)의 정도(程度)는 독소의 투여량과 경과시간에 따라 다양(多樣)하게 나타났다. 3. 한국산 aflatoxin의 독성은 표준 aflatoxin에 비해 약간 더 심한 병변(病變)을 나타냈으며, 한국산 aflatoxin에서도 결정 aflatoxin을 투여한 경우보다 사료에 배합하여 급식시킨 경우가 약간 더 심한 병변(病變)을 나타냈다. 4. 닭병아리의 간장에서 aflatoxin이 유발시킨 병리조직학적 소견보다 오리병아리의 간장에서의 경우가 그 정도에 있어 더욱 심하고 뚜렷하였다.
Zearalenone ELISA kits의 응용에 관한 연구
윤화중,김태종,이승윤,제갈준,윤지병,Yoon, Hwa-joong,Kim, Tae-Jong,Lee, Sung-Yun,JeGal, Jun,Yoon, Ji-Byung 대한수의학회 1998 大韓獸醫學會誌 Vol.38 No.2
For the extraction and measurement of zearalenone in the corn, bean, wheat and barley contaminated with Fusarium graminearum, the zearalenone-oxime, zearalenone-oxime BSA and zearalenone monoclonal antibodies were studied to develop and apply the direct competitive enzyme linked immunosorbent assay (ELISA). The extraction range of zearalenone with the monoclonal antibodies produced in this experiment was 10ng to 500ng/g feed and the 50% inhibition value was 50ng/ml. The mean recoveries of zearalenone artificially spiked in the ground corn were 89%. The specificity of F-2 monoclonal antibody for the analogues was favorable for the direct competitive ELISA. The result of the experiment showed the zearalenone in the corn, bean, wheat and barely naturally contaminated with the mold would be suitable for extraction and measurement with the monoclonal antibodies.
윤화중,Yoon, Hwa Joong The Korean Society of Veterinary Science 1975 大韓獸醫學會誌 Vol.15 No.2
한국산(韓國産) aflatoxin $G_1$의 독성(毒性)을 비교구명(比較究明)하기 위하여, 한국산(韓國産) aflatoxin $G_1$과 표준(標準) Aflatoxin $G_1$을 各各 1포(圃)씩 오리병아리에 경구투여(經口投與)해서 얻은 결과(結果)는 다음과 같다. 1. Aflatoxin $G_1$의 독성(毒性)에 의(依)하여 유발(誘發)되서 간장(肝臟)에 나타난 병리조직학적(病理組織學的) 병변(病變)은 출혈(出血), 지방변성(脂肪變性) 및 경(輕)한 담관세포(膽管細胞)의 증식등(增殖等)이었다. 2. 출혈(出血)은 $75{\mu}g$의 한국산(韓國産) aflatoxin $G_1$의 투여(投與)로 폐사한 오리에서 가장 현저하였다. 담관세포(擔管細胞)의 증식(增殖)은 $75{\mu}g$과 $50{\mu}g$의 aflatoxin $G_1$을 투여(投與)한 경우에 경(輕)하게 나타났다. 3. 독량(毒量)이 같은 경우에도 Aflatoxin $B_1$에 비(比)해 Aflatoxin $G_1$의 병변(病變)이 훨씬 가볍게 나타났다. 4. 한국산(韓國産) aflatoxin $G_1$을 투여해서 발생(發生)된 병변(病變)은 표준(標準) aflatoxin $G_1$을 투여해서 발생(發生)된 병변(病變)과 유사(類似)하였으며, 그 정도(程度)도 비슷하였다.