Duration of maternally derived antibodies in Toxoplasma gondii naturally infected piglets

García‐Bocanegra, Ignacio; Simon-Grifé, Meritxell; Sibila, Marina; Dubey, J. P.; Cabezón, Óscar; G, Martin; Almerı́a, S.

doi:10.1016/j.vetpar.2010.01.042

Cited by 14 publications

(11 citation statements)

References 7 publications

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“…The results of this cross-sectional survey of T. gondii infection in pigs from France show adjusted prevalence values of 3·0% at intensive and 6·3% at outdoor farms. Studies in Spain and Portugal, using the same test (MAT), showed a prevalence of 16·6 and 9·8%, respectively (Garcia-Bocanegra et al 2010 b ; Lopes et al 2013) while in Switzerland, using an Enzyme-linked immunosorbent assay (ELISA), Berger-Schoch et al . (2011) showed prevalence of 23% (Table 3).…”

Section: Discussionmentioning

confidence: 99%

Toxoplasma gondii infection in pork produced in France

et al. 2016

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The aim of this study was to assess the seroprevalence of the Toxoplasma gondii parasite in pork produced in France, and to determine infection risk factors. An innovative survey was designed based on annual numbers of slaughtered pigs from intensive and outdoor farms in France. A total of 1549 samples of cardiac fluids were collected from pig hearts to determine seroprevalence using a Modified Agglutination Test. Of those, 160 hearts were bio-assayed in mice to isolate live parasites. The overall seroprevalence among fattening pigs was 2·9%. The adjusted seroprevalence in pigs from intensive farms was 3·0%; the highest in sows (13·4%); 2·9% in fattening pigs and 2·6% in piglets. Adjusted seroprevalence in fattening animals from outdoor farms was 6·3%. Strains were isolated from 41 animals and all were genotyped by Restriction Fragment Length Polymorphism as type II. Risk-factor analysis showed that the risk of infection was more than three times higher for outdoor pigs, and that sows' risk was almost five times higher than that of fattening animals. This study provides further evidence of extensive pork infection with T. gondii regardless of breeding systems, indicating that farm conditions are still insufficient to guarantee 'Toxoplasma-free pork'.

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Section: Discussionmentioning

confidence: 99%

Toxoplasma gondii infection in pork produced in France

et al. 2016

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“…Duration of maternal antibodies from naturally infected sows in piglets lasts from three to six weeks of life [44] and in experimental conditions up to 17 weeks [45]. In this period, with the decrease in the concentration of specific T. gondii antibodies, young animals become susceptible to infection.…”

Section: Discussionmentioning

confidence: 99%

Factors associated with Toxoplasma gondii infection in confined farrow-to-finish pig herds in western France: an exploratory study in 60 herds

et al. 2016

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BackgroundInfection by Toxoplasma gondii postnatally can occur after ingestion of contaminated meat or water (tissue cysts/oocysts). In Europe, percentage of meat borne infections is estimated between 30 and 63 %, out of which pork makes the most important source. The aim of this study was to (i) investigate the seroprevalence of T. gondii in intensive pig farms from western France; and (ii) identify the risk factors associated with seropositivity.MethodsData were collected between November 2006 and February 2008 in 60 intensive farrow-to-finish farms, where sera were taken from 3595 fattening pigs, weaned and suckling piglets. Information about three classes of potential seropositivity risk factors were obtained through a questionnaire concerning: (i) breeding characteristics; (ii) farm management; and (iii) husbandry and hygiene. The modified agglutination test (MAT) was used for detection of specific anti T. gondii antibodies in pig sera, starting from 1/6 dilution.ResultsThe overall proportion of seropositive animals was 6.9 %, but the proportion of herds with at least one positive pig was 100 %. Multivariate logistic mixed model showed an increased seropositivity risk in weaned compared to suckling piglets, and a decreasing risk for mid-sized and large farms. The presence of a Danish entry facility, that clearly separates clean and dirty areas, had a protective effect on T. gondii seropositivity as well.ConclusionsThe observed proportion of herds with at least one T. gondii seropositive animal provides further evidence that even in confined conditions of pig breeding, infection occurs, and is common. The highest risk for acquiring T. gondii is at the end of weaning period. Smaller confined pig farms demonstrate higher T. gondii seropositivity levels. This study also showed that Danish entry on farm buildings provides effective protection against T. gondii.Electronic supplementary materialThe online version of this article (doi:10.1186/s13071-016-1753-5) contains supplementary material, which is available to authorized users.

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“…Dubey [67] conveyed that access of livestock to outdoors and grazing pasture (in autumn and summer seasons) are imperative risk factors for incidence of T. gondii. Role of age of animals has also been investigated [31,68].Recent survey [69] also disclosed that > 8 months old pigs had the higher seroprevalence of T. gondii than young pigs. Previous investigation [70] described that animals and especially sheep and goat can be exposed to T. gondii at any stage of their life, while incidence increased in higher ages.…”

Section: Discussionmentioning

confidence: 99%

Seasonal and Age Distribution of Toxoplasma gondii in Milk of Naturally Infected Animal Species and Dairy Samples

2020

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RIMARY infection by Toxoplasma gondii is habitually food borne and ingestion of foods with animal origins is measured as a risk factor. The current survey was performed to assess the seasonal and age distribution of T. gondii in diverse kinds of raw milk and traditional dairy products. Three-hundred and seventy raw milk and traditional dairy samples were collected and subjected to DNA extraction. B1 specific gene of T. gondii was perceived by means of the molecular technique. Eighteen out of 370 (4.86%) studied samples were positive for T. gondii. Molecular incidence of T. gondii in raw milk was 6.08%. T. gondii was also perceived in 2.85% of studied traditional dairy samples, respectively. Sheep milk (10%) and cheese (6.66%) had the uppermost molecular incidence of parasite. Molecular incidence of T. gondii in raw camel milk and cream and butter samples were 3.33%, 5% and 5%, respectively. Samples which were collected through autumn (15.55%) and summer (9.37%) seasons had the maximum molecular incidence of T. gondii. Raw milk samples of older than 4 years animal species (11.39%) had the maximum molecular incidence of T. gondii. The existingsurvey is the first report of seasonal and age distribution of T. gondii in diverse kinds of dairy samples. Raw sheep, goat, buffalo, bovine and camel milk and also traditional cheese, cream and butter dairy samples may harbor T. gondii infection. Seasonal and senile distribution should be measured for molecular incidence of T. gondii in milk of primary infected animals and also traditional dairy products.

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Duration of maternally derived antibodies in Toxoplasma gondii naturally infected piglets

Cited by 14 publications

References 7 publications

Toxoplasma gondii infection in pork produced in France

Toxoplasma gondii infection in pork produced in France

Factors associated with Toxoplasma gondii infection in confined farrow-to-finish pig herds in western France: an exploratory study in 60 herds

Seasonal and Age Distribution of Toxoplasma gondii in Milk of Naturally Infected Animal Species and Dairy Samples

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