Identification of weakly haemolytic Brachyspira isolates recovered from pigs with diarrhoea in Spain and Portugal and comparison with results from other countries
[EN] Weakly haemolytic anaerobic intestinal spirochaetes of the genus Brachyspira are commonly identified based on species-specific gene sequences. Apart from the pathogenic Brachyspira pilosicoli, the distribution and disease associations of the other weakly haemolytic Brachyspira species in pigs h...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universidad de León |
| Repositorio: | BULERIA. Repositorio Institucional de la Universidad de León |
| OAI Identifier: | oai:buleria.unileon.es:10612/24996 |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0034528813002397 https://hdl.handle.net/10612/24996 https://doi.org/10.1016/j.rvsc.2013.07.014 |
| Access Level: | acceso abierto |
| Palabra clave: | Veterinaria Pig Brachyspira Nox MLST Spain Portugal 3109 Ciencias Veterinarias |
| Sumario: | [EN] Weakly haemolytic anaerobic intestinal spirochaetes of the genus Brachyspira are commonly identified based on species-specific gene sequences. Apart from the pathogenic Brachyspira pilosicoli, the distribution and disease associations of the other weakly haemolytic Brachyspira species in pigs have not been comprehensively investigated. In this study weakly haemolytic Brachyspira isolates (n = 67) from Spanish and Portuguese pigs with diarrhoea, negative in a routine diagnostic PCR for B. pilosicoli, were identified by sequencing their NADH oxidase genes (nox). Nearly half the isolates were identified as Brachyspira murdochii (n = 31; 46.3%). The others were Brachyspira innocens (n = 26; 38.8%), Brachyspira intermedia (n = 7; 10.4%), “Brachyspira pulli” (n = 1; 1.5%) and a potentially novel Brachyspira species (n = 2; 3%). Multilocus sequence typing (MLST) on a subset of 18 isolates confirmed their species designations, including the potential new species, and identified similarities to strains from other countries. |
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