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動物性原料飼料에서 salmonella 屬菌의 分離, 生存性 및 初生雛에 대한 實驗的 感染
Ki Sik CHANG(張紀植),Byoung Gon CHUNG(鄭丙坤),Ho Jo KANG(姜鎬祚) 한국예방수의학회 1988 예방수의학회지 Vol.12 No.2
This survey was carried out to investigate for contamination rate and survival of Salmonella in animal feed ingredients. Also examined were the Pathogenicity of the isolates in infant chick by experimental inoculation. A total of 260 samples of finished feed and feed ingredients were randomly collected from feed mills in Pusan area from April to September 1986. Salmonella contamination rate in fish meal and bone meal were 5.1% and 1.4%, respectively, but none of the Salmonella was isolated from 92 samples of finished feed. Contamination 1 evels of Salmonella in 6 positive samples of feed ingredients ranged from 21 to 1100 per 100g in calculation by most probable numver(MPN) technique. Of the 11 Salmonella strains identified, 8 were typed as 4 strains of S.derby and each 2 strains of S.enteritidis and S.infantis, and 3 strains were untypable. All of the 11 isolates were susceptible to chloramphenicol and kanamycin, while some of the strains were resistant in order of prevalence to ampicillin. penicillin, streptomycin and tetracyline. Viable counts of S.derby and S.infantis in experimental inoculation were reduced from log 4.4-4.8 to log 2.7-3.3 in animal feed ingredients after storage for 16 weeks at 25℃. In oral inoculation with 10⁵ cut of Salmonella isolates into infant chicks aged 1 to 3 days, S.enteritidis, and S.infantis were found to bedischarged in feces 3 days afterwards, and these two stains and S.derby were detected from 50, 60 and 70% of the chick, repectively, 7 days after inoculation. S.enteritidis, S.derby and S.infantis were recovered respectively from about 60% of contents of small intestine and cecum and 30, 10 and 20% of liver 7 days after inoculation.
김용환(Yong Hwan Kim),강호조(Ho Jo Kang),조현호(Hyun Ho Cho),차인호(In Ho Cha),정병곤(Byoung Gon Chung) 한국예방수의학회 1987 예방수의학회지 Vol.11 No.2
A test of hippurate hydrolysis, H₂S production in TSI medium and a test of tolerence of triphenyltetrazolium chloride(TTC) were studied of 103 C. jejuni and 78 C. coli strains isolated from animal feces and reference strains to determine their usefulness for differentiation of C. jejuni and C. coli. The results were summerized as follows. Eighty-two decimal five percentage of the 103 C. jejuni strains hydrolysed sodium hippurate. Ability to hydrolysed hippurate were seen in 92.9% reference strains, 92.6% of cattle isolates, 85.7% of chicken isolates, 75.3% of swine isolates and 75.3% of duck isolates. Ninety-one percentage of the 78 C. coli strains were H₂S production in TSI medium, but 103 C. jejuni were negative. Ability to H₂S production in TSI medium for C. coli strains were seen in 100% of cattle isolates, 100% of chicken isolates, 92.6% of swine isolates and 82.6% of duck isolates. Tolerence to 0.8, 1.0 and 1.2mg of TTC per ml for 103 C. jejuni were seen 66.1%, 28.2% and 12.5%, whereas 77 C. coli were seen 100%, 96.2% and 92.0%, respectively.
Campylobacter 장염에 대한 역학적 연구 - 1 . 사람 , 동물 , 식품 및 강물에 있어서 Campylobacter jejuni 의 분포와 분리주의 혈청형
강호조,김용환,정병곤,박종일 경상대학교 축산진흥연구소 1989 畜産振興硏究所報 Vol.16 No.1
To investigate the epidemiological trait of gastroenteritis of human caused by C. jejuni isolation of etiological agent was carried out. Isolated C. jejuni were biotyped and serotyped. A total of 1929 specimens from 438 human, 182 milking cows, 200 cattle, 187 goats, 70 dogs, 426 pigs, 278 chickens, 148 duck, 50 raw milk, 110 chicken meat, 20 duck liver and 50 river water was examined for the presence of C. jejuni, and C. coli by direct plating and enrichment techniques. Isolation rates detected in human, animals food and water were as follows : human 0.796, ducks 54.7%, dogs 37.196, chickens 33.7%, goats 26.7%, cattle 25.5%, pigs 19.9% and milking cows 7.7%. The organism was isolated from 65% of 20 duck livers and from 2096 of 110 chicken west. Campylobacter was not recovered from raw river water. The majority of the isolated 201 strains of C. jejuni was classified as biotype I (53.7%) and biotype II (36.896). 117 strains of C. coli were 59.896 of biotype I , 40.1% biotype II. Isolated C. jejuni stranis showed 13 different serotype, and serotype 4, 5, 26 end 36 were most frequent. C. coli strains howed 7 different serotype, and serotype 21, 25 and 29 were relatively commom.