©2021-2033. All Rights Reserved. Online Journal of Veterinary Research . You may not store these pages in any form except for your own personal use. All other usage or distribution is illegal under international copyright treaties. Permission to use any of these pages in any other way besides the before mentioned must be gained in writing from the publisher. This article is exclusively copyrighted in its entirety to OJVR. This article may be copied once but may not be, reproduced or re-transmitted without the express permission of the editors. This journal satisfies the refereeing requirements (DEST) for the Higher Education Research Data Collection (Australia). Linking:To link to this page or any pages linking to this page you must link directly to this page only here rather than put up your own page.
Online Journal of Veterinary Research©
Volume 26 (6): 429-437, 2022.
Biochemical, antibiotic sensitivity, mice lethality and prevalence of Pasteurela multocida
pneumonia in small ruminants
Yahya Tahamtan DVM PhD1, Hamed Mirghafari2, Masoumeh Hayati MSc PhD1
1Bacteriology Dep. Razi Vaccine and Serum Research Institute-Shiraz, 2Bacteriology Department, Science and Research Branch (Kurdestan), Islamic Azad University, Iran.
Tahamtan Y, Mirghafari H, Hayati M., Biochemical, antibiotic sensitivity, mice lethality and prevalence of Pasteurela multocida pneumonia in small ruminants, Onl J Vet Res, 26 (6): 429-437, 2022. Seven hundred and fifty nasal and throat swabs of M. haemolytica and P. multocida from sheep and goats were isolated for biochemical, antibiotic sensitivity, mice lethality and prevalence evaluations. Thirty four (4.47%) P. multocida isolates were positive to oxidase, catalase, indole production, glucose and lactose fermentation tests. The isolates produced non-haemolytic colonies on blood agar and failed to grow on MacConkey agar. Six isolates induced 100% mortality in mice whereas the rest caused 50%. A short mean dead time (MDT) occurred in 18% of inoculated mice. All isolates were resistant to oxytetracycline and erythromycin, fully sensitive to penicillin and slightly sensitive to trimethoprim. Prevalence was highest in spring and late summer. Isolates with short MDT were highly virulent inducing severe pneumonia.
Key words: Pasteurella, Sheep, Goats, Iran.