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윤여백,김영진,김추철,노영선,권미순,김철민,임채웅 한국동물위생학회 2004 韓國家畜衛生學會誌 Vol.27 No.2
A dairy farm that has been suffered continuously(more than 2 years) from brucellosis in Korea in spite of repeated legal test-and-slaughter was investigated the main source of infection in the farm. All cattle(22 milking cows, 44 heifers, 60 calves, 8 bull), dogs(3 mixed breed), feces from wild birds(3 samples), drinking water(3 sites), and soil in the paddocks(14 sites) inside the farm were examined with serological and/or bacteriological methods including specific DNA detection with PCR method. Brucella spp in the milk and blood were detected in 12/22 and 5/22 milking cows, respectively, although all of them were negative with conventional tube agglutination test. The number of serologically positive heifer was 15(15/44), but the isolation of Brucella spp was succeeded in the only 11(11/15) of them. Brucella were detected in vagina 1(1/11) and nasal(3/12) excretion in serologically positive heifers. All the three dogs were serologically positive, and Brucella spp were isolated from their blood. However, Brucella spp were not detected in the drinking water, soil in the paddocks, nor the feces of wild birds. The results suggest that milking cow secrete Brucella spp through milk, genital tract and nasal cavity, which are the major source of infection in this farm, The main infection route of Brucella spp is contact to contact with Brucella spp excreting animals rather than environmental contamination. The animals, living together with infected cow such as dogs, are the readily susceptible and are required to be examined for Brucella spp.
윤여백 ( Yea Back Yoon ),김영진 ( Young Jin Kim ),김추철 ( Choo Cheol Kim ),노영선 ( Young Sun Rho ),권미순 ( Mee Soon Kwon ),김철민 ( Chul Min Kim ),임채웅 ( Chae Woong Lim ) 한국가축위생학회 2004 韓國家畜衛生學會誌 Vol.27 No.2
A dairy farm that has been suffered continuously(more than 2 years) from brucellosis in Korea in spite of repeated legal test-and-slaughter was investigated the main source of infection in the farm. All cattle(22 milking cows, 44 heifers, 60 calves, 8 bull), dogs(3 mixed breed), feces from wild birds(3 samples), drinking water(3 sites), and soil in the paddocks(14 sites) inside the farm were examined with serological and/or bacteriological methods including specific DNA detection with PCR method. Brucella spp in the milk and blood were detected in 12/22 and 5/22 milking cows, respectively, although all of them were negative with conventional tube agglutination test. The number of serologically positive heifer was 15(15/44), but the isolation of Brucella spp was succeeded in the only 11(11/15) of them. Brucella were detected in vagina 1(1/11) and nasal (3/12) excretion in serologically positive heifers. All the three dogs were serologically positive, and Brucella spp were isolated from their blood. However, Brucella spp were not detected in the drinking water, soil in the paddocks, nor the feces of wild birds. The results suggest that milking cow secrete Brucella spp through milk, genital tract and nasal cavity, which are the major source of infection in this farm, the main infection route of Brucella spp is contact to contact with Brucella spp excreting animals rather than environmental contamination. The animals, living together with infected cow such as dogs, are the readily susceptible and are required to be examined for Brucella spp.
양홍지,윤여백,서준석,노영선,정재명,서창섭 대한수의사회 1992 대한수의사회지 Vol.28 No.12
This report was undertaken to examine the correlationship between internal parasite infection and amount of milk production before and after vermicidal administration on F. hepatica and gastrointestinal nematoda infected cattle. The obtained results were
양홍지,서창섭,윤여백,박태옥,최은영,김윤태,Yang Hong-Ji,Seo Chang-Sub,Yoon Yea-Baek,Park Tae-Wook,Choi Eun-Young,Kim Youn-Tae 대한수의사회 1994 대한수의사회지 Vol.30 No.11
In order to monitor the parasites, fecal samples were taken from chicken (n=1,000), turkey(n=157), helmeted guineafowl(n=149), pheasant(n=190) and duck(n=190) in Chonbuk area. The identification of the parasites were determined by the fecal examination us
양홍지 ( Hong Ji Yang ),윤여백 ( Yea Baek Yoon ),박태욱 ( Tae Wook Park ),박용석 ( Yong Seok Park ),서창섭 ( Chang Wub Seo ),임병무 ( Byung Moo Rim ) 한국가축위생학회 1992 韓國家畜衛生學會誌 Vol.15 No.2
Fecal Examination for survey of natural prevalence of Balantidium coli was performed on 1,080 healthy bred pigs in Korea, and the positive rate was 56.2%. In order to observe if Balantidium coli might be a secondary invader after certain initiation of the intestinal lesions, the piglet groups preinfected with the protozoa experimentally were treated with salmonella cholerasuis, Trichuris, cold stress, HC1, and immunosuppressive drug respectively, but no relatios was found between them. Also the protozoa were not deteceted from the intestinal lesions spontaneously formed of 107 pigs which were checked in the slaughter house. According to the above results, Balantidium coli is not directly associated with the formation of any lesions in the pig`s intestine.
양홍지 ( Hong Ji Yang ),윤여백 ( Yea Baek Yoon ),이흥재 ( Heung Jae Yi ),최인방 ( In Bang Choi ),박태욱 ( Tae Wook Park ),서창섭 ( Chang Sub Seo ) 한국가축위생학회 1992 韓國家畜衛生學會誌 Vol.15 No.1
In order to detection of the intestinal parasites, 503 fecal samples were taken from mongorel-and pad-dogs in Chonbuk province. The prevalence and identification of intestinal parasites were determined by the fecal examinations using the floatation and /or sedimentation methods and microscopical examination, respectively. The results were obtained as follows; 1. Fifty-nine percent(297 dogs) from 503 fecal samples were detected eggs. In seasonal detection rate of eggs, summer was 30.3%, Autumn 26.4%, Winter 22.3% and Spring 21.0%, in order. 2. A total of 20 kinds of eggs were isolated from feces, and it was identified 75.7% as Nematoda(320 dogs), 5.6% as Cestoda(24 dogs) and 1.4% as Trematoda(6 dogs), and 17.2% as Protozoa(73 dogs). The isolates were identified as Ancylostoma caninum(30.4%, 153 dogs), Isospora spp.(14.3%, 72 dogs), Toxocara canis(11.1%, 56 dogs), Toxascaris leonina(5.8%, 29 dogs), Uncinerza stenocephala or Physaloptera spp.(5.4%, 27 dogs), Trichuris vulpis(2.4%, 12 dogs) and the others, single or in combination. 3. In mixed infection such as single, double, triple and quadraple was 63.6%, 31.7%, 3.4% and 1.3%, respectively.