Suitability of a Salmonella control programme based on serology in slaughter heavy pigs.
Res Vet Sci
; 101: 154-60, 2015 Aug.
Article
in En
| MEDLINE
| ID: mdl-26267106
ABSTRACT
The key component of most European pig Salmonella control programmes is the classification of herds according to seroprevalence at slaughter. The objectives of this study were to estimate the true Salmonella seroprevalence, and investigate the association between the true status of infection and serology in slaughter heavy pigs. Blood of 3340 pigs was collected and tested with ELISA. From 385 pigs, also lymph nodes and cecal content were collected for bacteriology. Analysis was performed in a Bayesian framework. Results showed that a large proportion of pigs was serologically positive (herd seroprevalence 93% and within-herd seroprevalence higher than 81% in half of herds at cut-off 10 OD%). The association between the true status of infection and serology was not significant, and therefore the classification of heavy pig herds according to seroprevalence at slaughter would not be suitable to reduce the risk of introducing Salmonella into the food chain.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Salmonella Infections, Animal
/
Swine Diseases
/
Abattoirs
/
Sus scrofa
Type of study:
Prognostic_studies
Limits:
Animals
Country/Region as subject:
Europa
Language:
En
Journal:
Res Vet Sci
Year:
2015
Document type:
Article
Affiliation country:
Italia