Cross-sectional survey for toxoplasmosis in free-range chickens (Gallus gallus domesticus) from the Atlantic Forest area in Alagoas state, Northeastern Brazil

Braz, Beatriz Maria de Almeida; Feitosa, Bruna Catarina de Oliveira; Romão, Elton Amorim; Silva, Edson Moura da; Júnior, José Wilton Pinheiro; Azevêdo, Sérgio Santos de; Porto, Wagnner José Nascimento

doi:10.1590/s1984-29612020087

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…Chickens provided with homemade feed have an increased chance of ingesting viable T. gondii tissue cysts in the food scraps. Our finding agrees with previous studies in village chickens from Brazil [42,43], where toxoplasmosis increased when chickens were fed with food scraps made from leftover human food, vegetables, and raw animal viscera. Moreover, stray cats are attracted to household leftovers and can excrete millions of oocysts on farms.…”

Section: Discussionsupporting

confidence: 93%

Prevalence and Haplotypes of Toxoplasma gondii in Native Village Chickens and Pigs in Peninsular Malaysia

Leong

Hassan

Sharma

et al. 2023

Veterinary Sciences

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Toxoplasma gondii is an important zoonotic foodborne parasite capable of infecting almost all warm-blooded animal species worldwide. Toxoplasmosis is usually acquired via ingestion of undercooked infected animal tissues resulting in life-threatening consequences for unborn foetus and immunocompromised individuals. A cross-sectional study was carried out to determine the prevalence of T. gondii infection, its associated risk factors in farms, and haplotypes isolated from the native village chicken and pig populations in Peninsular Malaysia. The seroprevalence of T. gondii in village chickens at the animal level was low at 7.6% (95% CI: 4.60–11.60), while at the farm level, it was 52.0% (95% CI: 31.30–72.20). For pigs, the animal-level seroprevalence of T. gondii was 3.0% (95% CI: 1.60–5.10), while the farm-level, it was 31.6% (95% CI: 12.60–56.60). The PCR-based DNA detection on meat samples from chickens (n = 250) and pork (n = 121) detected 14.0% (95% CI: 9.95–18.9) and 5.8% (95% CI: 2.4–11.6) positive, respectively. Six unique T. gondii haplotypes were isolated from the tissue samples. Multivariable logistic regression analysis showed that feeding the chickens farm-produced feeds and allowing wild animals access to pig farms were significant determinants for farm-level seropositivity. Providing hygienic and good quality feeds to chickens and increasing biosecurity in pig farms through prevention of access by wildlife may reduce the risk of transmission of T. gondii infection in the local chickens and pig farms.

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Section: Discussionsupporting

confidence: 93%

Prevalence and Haplotypes of Toxoplasma gondii in Native Village Chickens and Pigs in Peninsular Malaysia

Leong

Hassan

Sharma

et al. 2023

Veterinary Sciences

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“…The IFAT technique has been used in different epidemiological studies as a screening tool for T. gondii antibodies in chickens due to its high sensitivity and specificity. A cut-off point of ≥16 has been used as reference in this species (Braz et al, 2020), in the same way as in this study.…”

Section: Discussionmentioning

confidence: 99%

“…The slides were examined under an epifluorescense microscope at 400 3 magnification. The sample was considered positive at a cut-off 1:16 (Braz et al, 2020;Minutti et al, 2021). All samples were processed twice.…”

Section: Serological Testmentioning

confidence: 99%

Seroepidemiology of Toxoplasma gondii infection and parasite DNA in free-range chickens in Aguascalientes, Mexico

Aguilar-Marín

Cruz-Vázquez

Vitela-Mendoza

et al. 2022

AVet

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The objectives of the study were to estimate the prevalence of anti-Toxoplasma gondii antibodies in free-range chickens in Aguascalientes, Mexico, its association with certain risk factors, and the frequency of parasite DNA in the heart. Eighty-one small rural family farms were included, and blood and heart samples were taken from 150 clinically healthy, adult, free-range chickens. Serum samples were processed by indirect immunofluorescence antibody test considering a dilution of 1:16 as a positive reaction, while the DNA detection was done by PCR. The correlation between the presence of antibodies and the potential risk factors was estimated with logistic regression. The overall seroprevalence in the examined populations was 67%, with a range from 33% to 100% among municipalities, and 78% of the farms having at least one seropositive bird. The PCR test identified the presence of parasite DNA for one case only. Among the variables, the presence of cats and the presence of other animal species on the farm were the ones that had the highest values, while the presence of feral cats and the presence of noxious fauna were also identified as potential risk factors. The results indicate high soil contamination by T. gondii oocysts, which implies the active role of cats living on the farms.

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Microbial health hazards of recycling food waste as animal feed

Dame-Korevaar¹,

Boumans²,

Antonis³

et al. 2021

Future Foods

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Cross-sectional survey for toxoplasmosis in free-range chickens (Gallus gallus domesticus) from the Atlantic Forest area in Alagoas state, Northeastern Brazil

Cited by 3 publications

References 17 publications

Prevalence and Haplotypes of Toxoplasma gondii in Native Village Chickens and Pigs in Peninsular Malaysia

Prevalence and Haplotypes of Toxoplasma gondii in Native Village Chickens and Pigs in Peninsular Malaysia

Seroepidemiology of Toxoplasma gondii infection and parasite DNA in free-range chickens in Aguascalientes, Mexico

Microbial health hazards of recycling food waste as animal feed

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