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KMID : 1023519970200020143
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Korean Journal of Veterinary Service
1997 Volume.20 No. 2 p.143 ~ p.150
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Isolation of lactose non-fermenting Gram negative bacilli from animal feedstuffs and antibiotics susceptibility of isolates
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Hur Boo-Hong
Seo Surk-Yul
Lee Byong-Jong
Eum Sung-Shim
Song Hee-Jong
Chai Hyo-Seok
Kim Jin-Hwan
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Abstract
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Total viable cells and lactose non-fermenting cells were counted from animal feedstuffs (n=65). And isolation of Gram negative lactose nonfermenting enterobacteria and antibiotics susceptibility of isolates were performed. 1. The ranges of total viable cells / lactose non-fermenters in animal feedstuffs from Korean cattle were counted as 9-1 / 1-6, milking cow as 1-2 / 2-8, pig as 1-1 / 2-6, and chicken as 7-1 / 4-1 cfu/g, respectively. 2. Among the 214 isolates from feedstufs, 87 from Chinan(n=23), 66 from Changsu (n=23) and 61 from Mooju(n=19) were isolated. Of these isolates, 60 from pigs (n: 19), 51 from milking cows(n=15), 45 from chikens(n=11) and 58 from Korean cattle(20) were isolated. 3. Among the 6 genuses of Gram negative lactose nonfermenting enterobacili, Salmonella sp, Y pseudotuberculosis, Ent agglomerans and Sal choleraesuis were frequently encountered. 4. A majority of isolates were sensitive to 19 antibiotics, singly or in combination. These isolates were completely susceptible to Cp, Gm, Imp and Pi, 93% to Ak and To, 73% to Cax and Ts, 66% to Cft and Tim, 46-53% to Caz, Cf and Cz, 33-40% to Am, Azt, Cfz and Ti, and 6% to Cfx, in order, but not susceptible to Crm. 5. Among the antibiotic resistant strains, a total of 23 resistant patterns was noted, and of these Crm 40(18.7%), Am Cf Cfx Cfz Crm Ti 27(12.6%), each of Azt Ctx Crm and Azt Cax Caz Cft Cfx Crm 22(10.3% ) were frequently encountered.
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KEYWORD
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Animal feedstuffs, Lactose non-fermenting enterobacillus, Antimicrobial susceptibility
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