Seroprevalence of Toxoplasma gondii in Iberian pig sows
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The objective of the present study was to investigate the seroprevalence of Toxoplasma gondii infection in Iberian sows reared in extensive and intensive management conditions and to compare two serologic techniques used for diagnosis. In addition, some possible risk factors associated with the presence of serum antibodies to T. gondii were also studied. Serum samples were collected from 2492 Iberian sows on 14 pig farms. Three types of management systems were included, traditional extensive outdoor farms (five farms), intensive farms with outdoor access (n = 4), and conventional intensive indoor farms (n = 5). The presence of serum antibodies to T. gondii was evaluated by two commercially available tests: an indirect enzyme-linked immunosorbent assay (ELISA) and a direct agglutination test (DAT). Serum antibodies against T. gondii were detected in 237 sows (9.5%) by at least one of the techniques used. The mean seroprevalence of toxoplasmosis in Iberian sows was 5.8% by ELISA and 8.9% by DAT. An agreement kappa-value of 0.68 (95%, CI = 0.63–0.74) was found between both tests. The results from this study suggest that the prevalence of T. gondii antibodies among Iberian sows seems to be moderate-low. The presence of serum antibodies against T. gondii in Iberian sows was associated to an extensive management system and low-level facilities of the farm, sow number (> 1000 animals), presence of cats, absence of rodent control and bird-proof nets in windows, well-water source, feed sources and storage (from the same farm and not stored in silo), absence of fences, and low farm worker qualification.
KeywordsSeroprevalence Epidemiology Risk factors Toxoplasma gondii Pig Iberian sow
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Conflict of interest
The authors declare that they have no conflict of interest.
- Belluco S, Mancin M, Conficoni D, Simonato G, Pietrobelli M, Ricci A (2016) Investigating the determinants of Toxoplasma gondii prevalence in meat: a systematic review and meta-regression. PloS One 11(4):e0153856. https://doi.org/10.1371/journal.pone.0153856 eCollection 2016CrossRefPubMedPubMedCentralGoogle Scholar
- Damriyasa IM, Bauer C, Edelhofer R, Failing K, Lind P, Petersen E, Schares G, Tenter AM, Volmer R, Zahner H (2004) Cross-sectional survey in pig breeding farms in Hesse, Germany: seroprevalence and risk factors of infections with Toxoplasma gondii, Sarcocystis spp. and Neospora caninum in sows. Vet Parasitol 126:271–286CrossRefPubMedGoogle Scholar
- Djokic V, Fablet C, Blaga R, Rose N, Perret C, Djurkovic-Djakovic O, Boireau P, Durand B (2016a) Factors associated with Toxoplasma gondii infection in confined farrow-to-finish pig herds in western France: an exploratory study in 60 herds. Parasit Vectors 9:466. https://doi.org/10.1186/s13071-016-1753-5 CrossRefPubMedPubMedCentralGoogle Scholar
- Dubey JP (2010) Toxoplasmosis of animals and humans, second edn. CRC Press, Boca Raton. FloridaGoogle Scholar
- Hernández M, Gómez-Laguna J, Tarradas C, Luque I, García-Valverde R, Reguillo L, Astorga RJ (2014) A serological survey of Brucella spp., Salmonella spp., Toxoplasma gondii and Trichinella spp. in Iberian fattening pigs reared in free-range systems. Transbound Emerg Dis 61:477–481CrossRefPubMedGoogle Scholar
- Papatsiros VG, Athanasiou LV, Stougiou D, Papadopoulos E, Maragkakis GG, Katsoulos PD, Lefkaditis M, Kantas D, Tzica ED, Tassis PD, Boutsini S (2016) Cross-sectional serosurvey and risk factors associated with the presence of Toxoplasma gondii antibodies in pigs in Greece. Vector Borne Zoonotic Dis 16:48–53CrossRefPubMedGoogle Scholar
- Pastiu AI, Gyöke A, Blaga R, Mircean V, Rosenthal BM, Cozma V (2013) In Romania, exposure to Toxoplasma gondii occurs twice as often in swine raised for familial consumption as in hunted wild boar, but occurs rarely, if ever, among fattening pigs raised in confinement. Parasitol Res 112:2403–2407CrossRefPubMedGoogle Scholar