Antibodies to Toxoplasma gondii in slaughtered free-range and broiler chickens

Rodrigues, Filipa Teixeira; Moreira, Fernando; Coutinho, Teresa; Dubey, J. P.; Cardoso, Luı́s; Lopes, Ana Patrícia

doi:10.1016/j.vetpar.2019.06.007

Cited by 17 publications

(11 citation statements)

References 18 publications

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“…All Turkeys that were tested were found to be seronegative for Anti-T. gondii. The findings of this study were higher than those reported in Portugal, where the prevalence of Anti-T. gondii was 5.6.00% in free-range and 0.00% in broiler chickens (Rodrigues et al, 2019). On the contrary, the reported results were lower than those reported in Egypt among turkeys, chickens, and ducks, which were 56.50%, 47.20%, and 50.00%, respectively (El-Massry, 2000).…”

Section: -Discussioncontrasting

confidence: 88%

Seroprevalence of Anti-Toxoplasma Gondii Antibodies in the Most Consumed Livestock and Poultry in Gaza – Palestine

2022

IUGNS

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It is commonly established that warm blooded animals are extremely vulnerable to the infectious coccidian parasite, Toxoplasma gondii. T. gondii can be transmitted to poultry and livestock through the ingestion of oocyst (fecal-oral), and placenta (congenital toxoplasmosis) in livestock. Cattle, sheep, and rabbits are some of the most consumed livestock in Palestine. As for poultry, backyard chicken, caged chicken, and caged turkeys are some of the most consumed birds. The aim of the present study is to detect the seroprevalence of Anti-T. gondii antibodies (IgG/IgM) among the frequently consumed livestock and poultry, which is collected from farms and slaughterhouses in Gaza, Palestine. For this specific study, blood samples from 213 cattle, 100 sheep, and 99 rabbits were collected. On the other hand, 50 blood samples from each type of poultry mentioned above were also collected. The criteria of samples collection based on a quick survey was performed among animal breeders and slaughterhouses owners in the study area, under the guidance of the colleagues in the Palestinian Ministry of Agriculture (veterinary department), as well as with the support of documented references as the targeted animal groups are the most suitable for meat production regardless of age and gender. The collected samples were analyzed through the use of the ELISA technique and Rapid Cassette Test. The results of the present study showed a high seroprevalence of Anti-T. gondii antibodies among sheep, which was 64.00 % and 13.14% among cattle. On the other hand, the results among backyard chicken and caged chicken were 26.00% and 2.00%, respectively. However, no antibodies were detected in the serum of rabbits and caged turkeys.

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Section: -Discussioncontrasting

confidence: 88%

Seroprevalence of Anti-Toxoplasma Gondii Antibodies in the Most Consumed Livestock and Poultry in Gaza – Palestine

2022

IUGNS

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“…Infections were low (3.7% of 384) even in adult laying hens in large farms (>1000 per unit) compared with 11.7% of 470 backyard chickens in Germany; all chickens tested had outdoor access (Schares et al ., 2017 a ). Infections in caged chickens were lower than in FR chickens (Yan et al ., 2009; Cui et al ., 2010; Tian and Cui, 2010; Xu et al ., 2012; Mahmood et al ., 2014; Matsuo et al ., 2014; Rodrigues et al ., 2019; Duong et al ., 2020).…”

Section: Natural Infectionsmentioning

confidence: 99%

Epidemiologic significance ofToxoplasma gondiiinfections in chickens (Gallus domesticus): the past decade

Dubey¹,

Pena²,

Cerqueira‐Cézar³

et al. 2020

Parasitology

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Toxoplasma gondii infections are common in humans and animals worldwide. Domestic free-range chickens (Gallus domesticus) are excellent sentinels of environmental contamination with T. gondii oocysts because they feed on the ground. Chickens can be easily infected with T. gondii; however, clinical toxoplasmosis is rare in these hosts. Chickens are comparatively inexpensive and thus are good sentinel animals for T. gondii infections on the farms. Here, the authors reviewed prevalence, the persistence of infection, clinical disease, epidemiology and genetic diversity of T. gondii strains isolated from chickens worldwide for the past decade. Data on phenotypic and molecular characteristics of 794 viable T. gondii strains from chickens are discussed, including new data on T. gondii isolates from chickens in Brazil. This paper will be of interest to biologists, epidemiologists, veterinarians and parasitologists.

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“…Since chickens have outdoor access, feed from the ground, and are susceptible to infection, this species can act as an indicator of environmental contamination with T. gondii (Dubey 2010b;Moré et al 2012;Hill and Dubey 2013;Dubey et al 2015;), and as sentinels in regions with a high prevalence of T. gondii infection in humans (Dubey et al 2002). Therefore, free-range chickens have been widely used to study the prevalence and genetic variation of T. gondii worldwide (Chikweto et al 2011;Wang et al 2013;Verma et al 2015;Vieira et al 2018a, b;Rodrigues et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Prevalence and molecular characterization of Toxoplasma gondii in different types of poultry in Greece, associated risk factors and co-existence with Eimeria spp.

et al. 2022

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Toxoplasma gondii is a protozoan parasite of public health importance, infecting all warm-blooded animals, including chickens. Undercooked chicken meat or relevant products such as sausages could lead to human infections. In free-range, organic and slow-growth farming systems where the susceptibility period for chickens is extended, more knowledge about potential risk factors is essential. This study is the first seroepidemiological survey in different regions and types of chicken farms in Greece, using a major tachyzoite surface antigen-based ELISA (TgSAG1), combined with magnetic-capture PCR (mc-PCR) and bioassay for the isolation of strains from the chickens’ tissues. Potential risk factors for T. gondii infection in these hosts were also investigated. Additionally, the co-existence of T. gondii and Eimeria spp. infections was assessed to elucidate epidemiological links between these two protozoan infections. Overall T. gondii seroprevalence was 9.5%. Of the backyard chickens sampled, 41.2% were seropositive and 70% of the organic and free-range layer farms had at least one T. gondii seropositive hen. No serologically positive broilers were found, although mc-PCR revealed a positive sample, highlighting the importance of accurate early-infection direct detection of T. gondii infections to ensure public health. T. gondii isolates obtained by mouse bioassay were genotyped. All belonged to type II (ToxoDB#3) as confirmed also by microsatellite typing. Production system, type of nutrition, and feeding system automation were identified as the most significant risk factors, while no association was found between the presence of cats and T. gondii seropositivity as calculated on both a farm level and per individual bird sampled.

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Antibodies to Toxoplasma gondii in slaughtered free-range and broiler chickens

Cited by 17 publications

References 18 publications

Seroprevalence of Anti-Toxoplasma Gondii Antibodies in the Most Consumed Livestock and Poultry in Gaza – Palestine

Seroprevalence of Anti-Toxoplasma Gondii Antibodies in the Most Consumed Livestock and Poultry in Gaza – Palestine

Epidemiologic significance ofToxoplasma gondiiinfections in chickens (Gallus domesticus): the past decade

Prevalence and molecular characterization of Toxoplasma gondii in different types of poultry in Greece, associated risk factors and co-existence with Eimeria spp.

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