Isolation, serotyping and antibiogram of Pasteurella from pigs of North East India

Abstract

Altogether 309 samples from 187 pigs apparently healthy, 77 slaughtered for pork, 25 dead and 22 ailing pigs with gross lesions and clinical symptoms suggestive of pasteurellosis were screened for isolation of Pasteurella. Fifty (26.73%) animals were positive for Pasteurella species, form dead pigs (52%). Strains (63%, 20.38%) of Pasteurella were isolatted consisting 52 (82.54%) Pasteurella multocida and 11 (17.46%) Manneimia (Pasteurella) haemolytica. Recovery of Pasteurella multocida was the highest form lung followed by nasal swabs while M.(Pasteurclla) haemolytica could be recovered only from lung followed by nasal swabs. Among the 52 Pasteurella multocida isolated isolates 26 (50%) belonged to serotype A, 10 (19.23%) to serotype B while 16 (30.76%) were untypable. All the 11 isnlales of M.(Pasteurella} haemolytiea strains were untypable. Strains of Pasteurella mliltocida were highly sensitivity to cephalexin (100%) followed by nortloxacin (96.15%) and gentamicin (88.46%) and were least sensitive to lincomycin (7.69%). Similar type of sensitivity towards cephalexin and nortloxacin (100%) was also observed among the strains of M. (Pasteurella) haemolytica.