Open Access
Research (Published online: 10-03-2021)
9. Identification and distribution of Brachyspira species in feces from finishing pigs in Argentina
Alicia Carranza, Julián Parada, Pablo Tamiozzo, Malena Flores León, Pablo Camacho, Gabriel Di Cola, Enrique Corona-Barrera, Arnaldo Ambrogi and Gustavo Zielinski
Veterinary World, 14(3): 607-613

Alicia Carranza: Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina.
Julián Parada: Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina; National Scientific and Technical Research Council (CONICET), Córdoba, Argentina.
Pablo Tamiozzo: Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina.
Malena Flores León: Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina.
Pablo Camacho: Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina.
Gabriel Di Cola: Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina.
Enrique Corona-Barrera: Faculty of Veterinary Medicine and Animal Science, Autonomous University of Tamaulipas, Victoria, México.
Arnaldo Ambrogi: Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina.
Gustavo Zielinski: National Agricultural Technology Institute (INTA), Marcos Juárez, Córdoba, Argentina.

doi: www.doi.org/10.14202/vetworld.2021.607-613

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Article history: Received: 03-09-2020, Accepted: 22-01-2021, Published online: 10-03-2021

Corresponding author: Julián Parada

E-mail: jparada@ayv.unrc.edu.ar

Citation: Carranza A, Parada J, Tamiozzo P, Flores León M, Camacho P, Di Cola G, Corona-Barrera E, Ambrogi A, Zielinski G (2021) Identification and distribution of Brachyspira species in feces from finishing pigs in Argentina, Veterinary World, 14(3): 607-613.
Abstract

Background and Aim: Brachyspira are Gram-negative, aerotolerant spirochetes that colonize the large intestine of various species of domestic animals and humans. The aim of this study was to determine the presence and distribution of different species of Brachyspira presents in feces from finishing pigs in Argentina.

Materials and Methods: Fecal samples (n=1550) were collected from finishing pigs in 53 farms of the most important swine production areas of Argentina, and Brachyspiras species were identified by bacteriological and molecular methods.

Results: The regional prevalence of Brachyspira spp. was at the level of 75.5% (confidence interval 95%, 62.9-87.9), and it was lower among those farms with >1001 sows. One hundred and twenty-eight isolates of Brachyspira were properly identified and the species found were: Brachyspira hyodysenteriae, Brachyspira pilosicoli, Brachyspira innocens, and Brachyspira murdochii. B. hyodysenteriae and B. pilosicoli had low prevalence (1.9% and 7.5%, respectively), B. innocens was isolated from 34% of the farms and B. murdochii was found in 39.6%.

Conclusion: The present study provides epidemiological data about herd prevalence of the different Brachyspira species in Argentina, showing that the prevalence figure seems to be higher than that reported in other countries.

Keywords: Brachyspira species, diagnosis, herd prevalence, intestinal spirochetes, swine.