Toxoplasma gondii and Neospora caninum in slaughtered pigs from Northeast, Brazil

Feitosa, Thaís Ferreira; Vilela, Vinícius Longo Ribeiro; Melo, Lídio Ricardo Bezerra de; Neto, João Leite de Almeida; Souto, Diego Vagner de Oliveira; Morais, Dayana Firmino de; Athayde, Ana Célia Rodrigues; Azevêdo, Sérgio Santos de; Pena, Hilda Fátima de Jesus

doi:10.1016/j.vetpar.2014.03.015

Cited by 41 publications

(27 citation statements)

References 25 publications

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“…The same risk factors for T. gondii infection of pigs, age of animals, presence of cats, absence of rodent control, type of farm management, were reported in studies from Brazil and Mexico [35–38]. A study from Paraiba state in Brazil found that feeding with leftovers increases chances for pig infection with T. gondii as well [35]. In the Brazilian state of Toledo, the risk for parasites infection was higher on farms where workers were not assigned to specific area of the farm, other animals had access to pig feeders and drinkers, and where mean piglet number was low [39].…”

Section: Discussionsupporting

confidence: 54%

“…At the same time, a study from the Netherlands showed significantly lower T. gondii seroprevalence in intensive - strictly confined pig farms, without access of cats and rodents into buildings [5]. The same risk factors for T. gondii infection of pigs, age of animals, presence of cats, absence of rodent control, type of farm management, were reported in studies from Brazil and Mexico [35–38]. A study from Paraiba state in Brazil found that feeding with leftovers increases chances for pig infection with T. gondii as well [35].…”

Section: Discussionmentioning

confidence: 76%

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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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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 76%

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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“…The isolation rate obtained in the bioassay of the present study was relatively low when compared with other studies in pigs in Brazil (Frazão-Teixeira et al 2011;Feitosa et al 2014). T. gondii was isolated from 2 % (1/50) of the pigs with IFAT titers of ≥64.…”

Section: Discussioncontrasting

confidence: 69%

“…In Bahia State, Bezerra et al (2009) found that 46.8 % of the pigs slaughtered were seropositive. Other research on pigs slaughtered for human consumption in the States of Paraíba (Azevedo et al 2010;Feitosa et al 2014) and Pernambuco (Fernandes et al 2011) reported prevalence of 9.7, 19.5, and 36.2 %, respectively. The high prevalence of positive animals raised on pig farms indicates greater environmental contamination.…”

Section: Discussionmentioning

confidence: 95%

First report of genotype #65 of Toxoplasma gondii in pigs

et al. 2015

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The aim of the present study was to isolate and genotype Toxoplasma gondii from pigs slaughtered for human consumption in northeastern Brazil. Indirect immunofluorescence antibody test (IFAT) was used to screen positive pigs. Tissues samples of animals with antibody titers ≥64 were submitted to bioassay in mice. One isolate of T. gondii was obtained, and the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique, using 11 markers (SAG1, SAG2, altSAG2, SAG3, BTUB, GRA6, c228, c292, L358, PK1, and APICO), was applied to evaluate the genetic variability. DNA from reference strains was used as a positive control. By means of genetic analysis, genotype ToxoDB #65 was identified, which is considered an atypical strain. This is the first record of genotype #65 in pigs. Thus, further studies in this region are necessary to determine the genetic variability of T. gondii in pigs and possible impact on public health.

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“…The most recent studies report rates of 14.9% in the same state (OSHIRO et al, 2007), 19% in Pará (MINERVINO et al, 2007, 91.2% in Minas Gerais (GUEDES et al, 2008), 53.5% in Mato Grosso (BENETTI et al, 2009), 50.74% in Maranhão (TEIXEIRA et al 2010), 13.2% in Paraná (MOURA et al, 2012, and 12.6% and 16.7% in Pernambuco and Alagoas, respectively (AMARAL et al, 2012). Recently, anti-N. caninum antibodies were also recorded in the state of Paraíba in other production animals, with a prevalence of 3.15% in pigs (FEITOSA et al, 2014) and 19.1% in buffaloes (BRASIL et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Seroprevalence of Neospora caninum in dairy cattle and dogs from the Agreste region of the State of Paraíba

Melo¹,

Feitosa

Vilela

et al. 2017

AVB

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Toxoplasma gondii and Neospora caninum in slaughtered pigs from Northeast, Brazil

Cited by 41 publications

References 25 publications

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

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

First report of genotype #65 of Toxoplasma gondii in pigs

Seroprevalence of Neospora caninum in dairy cattle and dogs from the Agreste region of the State of Paraíba

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