Open Access
Research (Published online: 21-03-2019)
13. Characterization and comparison of strains of Pasteurella multocida associated with cases of progressive atrophic rhinitis and porcine pneumonia in Argentina
Fernando A. Bessone, Maria Laura Soriano Perez, Gustavo Zielinski, Marina Dibarbora, M. B. Conde, Javier Cappuccio and Fabrisio Alustiza
Veterinary World, 12(3): 434-439

Fernando A. Bessone: Department of Animal Health, Instituto Nacional de Tecnologia Agropecuaria, Estacion Experimental Agropecuaria Marcos Juarez, Marcos Juarez, Cordoba, Argentina.
Maria Laura Soriano Perez: Department of Animal Health, Instituto Nacional de Tecnologia Agropecuaria, Estacion Experimental Agropecuaria Marcos Juarez, Marcos Juarez, Cordoba, Argentina; CONICET, Buenos Aires, Argentina.
Gustavo Zielinski: Department of Animal Health, Instituto Nacional de Tecnologia Agropecuaria, Estacion Experimental Agropecuaria Marcos Juarez, Marcos Juarez, Cordoba, Argentina.
Marina Dibarbora: Department of Animal Health, Instituto Nacional de Tecnologia Agropecuaria, Estacion Experimental Agropecuaria Marcos Juarez, Marcos Juarez, Cordoba, Argentina; CONICET, Buenos Aires, Argentina.
M. B. Conde: Department of Animal Health, Instituto Nacional de Tecnologia Agropecuaria, Estacion Experimental Agropecuaria Marcos Juarez, Marcos Juarez, Cordoba, Argentina.
Javier Cappuccio: Department of Animal Health, Instituto Nacional de Tecnologia Agropecuaria, Estacion Experimental Agropecuaria Marcos Juarez, Marcos Juarez, Cordoba, Argentina; CONICET, Buenos Aires, Argentina.
Fabrisio Alustiza: Department of Animal Health, Instituto Nacional de Tecnologia Agropecuaria, Estacion Experimental Agropecuaria Marcos Juarez, Marcos Juarez, Cordoba, Argentina.

doi: 10.14202/vetworld.2019.434-439

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Article history: Received: 25-06-2018, Accepted: 06-02-2019, Published online: 21-03-2019

Corresponding author: Fernando A. Bessone

E-mail: bessone.fernando@inta.gob.ar

Citation: Bessone FA, Perez MLS, Zielinski G, Dibarbora M, Conde MB, Cappuccio J, Alustiza F (2019) Characterization and comparison of strains of Pasteurella multocida associated with cases of progressive atrophic rhinitis and porcine pneumonia in Argentina, Veterinary World, 12(3): 434-439.
Abstract

Background: Pasteurella multocida (Pm) is the causative agent of progressive atrophic rhinitis (PAR) and pneumonic pasteurellosis (PN) in pigs. Pm is a member of the porcine respiratory complex responsible for important economic loss in the pig industry.

Aim: This study aimed to characterize the Pm strains recovered from clinical cases of PN and PAR and to elucidate the antibiotic susceptibility profiles of the strains.

Materials and Methods: Sixty strains were characterized molecularly by polymerase chain reaction to determine species-specific gene, capsular type (A or D), and toxin A production. The agar diffusion method was employed to evaluate antibiotic resistance profiles.

Results: We found that 65% of strains belonged to capsular type A or D, and 15% of those were positive to toxA gene. The antibiotic susceptibility profiles found were sensitive in decreasing order to: Enrofloxacin, ceftiofur (CTF), ampicillin, tilmicosin (TIL), florfenicol (FFN), spectinomycin (SPC), gentamicin, oxytetracycline (OTC), and trimethoprim-sulfamethoxazole (TMS). Strains were resistant in decreasing order to: Lincomycin (LIN), tylosin (TYL), erythromycin (ERY), TMS, SPC, OTC, FFN, TIL, and CTF.

Conclusion: The toxA gene was detected in many Pm isolates from pneumonic lungs. Capsule type A or D was the most frequently found among the collected isolates. LIN, TYL, and ERY are the drugs which showed higher percentages of resistant isolates.

Keywords: antibiotics susceptibility profiles, molecular characterization, Pasteurella multocida, pig.

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