Colonization of oropharynx and nasal cavity of CDCD pigs by a nontoxigenic strain of Pasteurella multocida type D
Guosong Zhao, DVM, PhD; Thomas Halbur; Duane C. Pankratz, DVM
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Five-week-old cesarean-derived colostrum-deprived (CDCD) pigs were inoculated intranasally with a nontoxigenic Pasteurella multocida type D strain. Reisolation of this organism was attempted at 1, 3, 5, 7, and 21 days post inoculation (PI). The P. multocida was more pronounced and consistent in the tonsils at 3 weeks PI. This study shows that a nontoxigenic strain of P. multocida, which is not considered to be a causative agent of atrophic rhinitis, can colonize the tonsil and nasal cavity of CDCD pigs for at least three weeks.
Keywords: Pasteurella multocida, nontoxigenic, cesarean-derived colostrum-deprived
Cite as: Zhao G, Halbur T, Pankratz DC. Colonization of oropharynx and nasal cavity of CDCD pigs by a nontoxigenic strain of Pasteurella multocida type D. J Swine Health Prod 1995;3(3):113-115.
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