Identification and distribution of Brachyspira species in feces from finishing pigs in Argentina

Vet World Vol.14 March-2021 Article-9

Research Article

Veterinary World, 14(3): 607-613

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

Alicia Carranza¹, Julián Parada^1,2, Pablo Tamiozzo¹, Malena Flores León¹, Pablo Camacho¹, Gabriel Di Cola¹, Enrique Corona-Barrera³, Arnaldo Ambrogi¹, and Gustavo Zielinski⁴

1. Department of Animal Pathology, Faculty of Agronomy and Veterinary, National University of Rio Cuarto, Róo Cuarto, Argentina.
2. National Scientific and Technical Research Council (CONICET), Córdoba, Argentina.
3. Faculty of Veterinary Medicine and Animal Science, Autonomous University of Tamaulipas, Victoria, México.
4. National Agricultural Technology Institute (INTA), Marcos Juárez, Córdoba, Argentina.

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.

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

How to cite this article: 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.

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

Corresponding author: Julián Parada E-mail: jparada@ayv.unrc.edu.ar

DOI: 10.14202/vetworld.2021.607-613

Copyright: Carranza, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.