Prevalence and risk association for Trichinella infection in domestic pigs in the northeastern United States.
Vet Parasitol
; 82(1): 59-69, 1999 Mar 22.
Article
em En
| MEDLINE
| ID: mdl-10223350
ABSTRACT
To determine Trichinella infection in a selected group of farm raised pigs, 4078 pigs from 156 farms in New England and New Jersey, employing various management styles, were selected based on feed type (grain, regulated waste, non-regulated waste). The number of pigs bled from each farm were based on detecting infection assuming a 0.05 prevalence rate. Serum was tested by enzyme-linked immunoassay for antibodies to Trichinella spiralis. Seropositive pigs were tested by digestion at slaughter (when possible) for the presence of Trichinella larvae. Questionnaires completed at the time of serum collection were used to develop descriptive statistics on farms tested and to determine measures of association for risk factors for the presence of Trichinella-seropositive pigs. A total of 15 seropositive pigs on 10 farms were identified, representing a prevalence rate of 0.37% and a herd prevalence rate of 6.4%. A total of nine seropositive pigs and one suspect pig from six farms were tested by digestion; four pigs (representing three farms) harbored Trichinella larvae at densities of 0.003-0.021 larvae per gram (LPG) of tissue; no larvae were found in six pigs. Risk factors which were significantly associated with seropositivity included access of pigs to live wildlife and wildlife carcasses on the farm; waste feeding had no statistically significant association with seropositivity for Trichinella infection in pigs. The presence of Trichinella infection in pigs in New England and New Jersey has declined during the past 12 years when compared with previous prevalence studies.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças dos Suínos
/
Triquinelose
/
Anticorpos Anti-Helmínticos
/
Trichinella spiralis
Tipo de estudo:
Etiology_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Animals
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Vet Parasitol
Ano de publicação:
1999
Tipo de documento:
Article
País de afiliação:
Estados Unidos