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Weaned piglets: another factor to be considered for the control of Salmonella infection in breeding pig farms

Artículo de investigación publicado en Veterinary Research

18 de junio de 2019

Field studies on Salmonella infection in suckling piglets are scarce due to the intrinsic difficulties of collecting proper samples (i.e. tonsils or mesenteric lymph nodes), and most of them rely on the analysis of rectal swabs that limit their accuracy. We used 495 slaughtered 4-weeks-old male piglets intended for human consumption from 5 Salmonella-seropositive breeding farms to collect gastrointestinal packages and perform a thorough detection of Salmonella on mesenteric lymph nodes and intestinal content. The overall prevalence of both infection and shedding was high (≈ 36%) indicating that piglets played an active role in Salmonella maintenance in the farms. Major serotypes found in piglets included 4,[5],12:i: (35.4%), Rissen (17.1%), Derby (10.9%) and Bovismorbificans (10.3%). In most of the infected animals (72.8%) the same serotype was found in mesenteric lymph nodes and feces. Significant higher ELISA OD% values were found in meat juice samples from non-infected piglets compared to infected ones (median OD% of 12.0 and 17.3, respectively; P = 0.002) suggesting some protective effect of sow`s colostrum. Salmonella was also isolated from feces from weaned sows contemporary of the slaughtered piglets, and 89% of the serotypes identified in sows were also detected in piglets. Pulsed field gel electrophoresis analyses showed that 75% of the piglet isolates that were compared to those of sows were related to them, suggesting the circulation of Salmonella strains between sows and piglets. It appears that improving piglet colostrum intake along with the reduction of the shedding in sows may favor the control of Salmonella infection in breeding farms




Casanova-Higes A., Marin-Alcala CM., Andres-Barranco S., Cebollada-Solanas A., Alvarez J. y Mainar-Jaime RC.




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Weaned piglets: another factor to be considered for the control of Salmonella infection in breeding pig farms

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Weaned piglets: another factor to be considered for the control of Salmonella infection in breeding pig farms

Participantes:

Unidad de Producción y Sanidad Animal. Centro de Investigación y Tecnología Agroalimentaria de Aragón. Instituto Agroalimentario de Aragón.

Universidad de ZaragozaDepartamento de Microbiología, Medicina Preventiva y Salud Pública. Facultad de Medicina. Universidad de Zaragoza (UNIZAR).

Unidad de Biocomputación. Instituto Aragonés de Ciencias de la Salud (IACS). Centro de Investigación Biomédica de Aragón (CIBA).

Instituto de Salud Carlos IIICentro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES). Instituto de Salud Carlos III (ISCIII).

Universidad ComplutenseCentro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).

Universidad ComplutenseDepartamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM).

Universidad de ZaragozaInstituto Universitario de Investigación Mixto Agroalimentario de Aragón (IA2). Universidad de Zaragoza (UNIZAR).

Universidad de ZaragozaDepartamento de Patología Animal. Facultad de Veterinaria. Universidad de Zaragoza (UNIZAR).







Veterinary Research
FACTOR YEAR Q
3.117 2018

NLMID: 9309551

PMID: 31215485

ISSN: 0928-4249



TÍTULO: Weaned piglets: another factor to be considered for the control of Salmonella infection in breeding pig farms


REVISTA: Vet. Res.


NUMERACIÓN: 50:45


AÑO: 2019


EDITORIAL: BMC


AUTORES: Casanova-Higes A., Marin-Alcala CM., Andres-Barranco S., Cebollada-Solanas A., Alvarez J. and Mainar-Jaime RC.


PARTICIPANTES VISAVET


Julio Álvarez Sánchez

DOI: https://doi.org/10.1186/s13567-019-0666-7


CITA ESTA PUBLICACIÓN:

Casanova-Higes A., Marin-Alcala CM., Andres-Barranco S., Cebollada-Solanas A., Alvarez J. y Mainar-Jaime RC. Weaned piglets: another factor to be considered for the control of Salmonella infection in breeding pig farms. Veterinary Research. 50:45. 2019. (A). ISSN: 0928-4249. DOI: 10.1186/s13567-019-0666-7