Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil: transitional antibody observation.

Autor: Sousa LN; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil., Batista SP; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil., Silva SS; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil., da Silva RF; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, ZC, Sousa, Paraíba, 58800-970, Brazil., Sarmento WF; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, ZC, Sousa, Paraíba, 58800-970, Brazil., Mota RA; Postgraduate Program in Animal Bioscience, Federal Rural University of Pernambuco (UFRPE), Recife, Pernambuco, Brazil., Brasil AWL; Department of Morphology, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil., Amaku M; Faculty of Medicine, University of São Paulo (USP), São Paulo, SP, Brazil., Feitosa TF; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, ZC, Sousa, Paraíba, 58800-970, Brazil., Vilela VLR; Postgraduate Program in Animal Science, Federal University of Campina Grande (UFCG), Patos, Paraíba, Brazil. vinicius.vilela@ifpb.edu.br.; Department of Veterinary Medicine, Federal Institute of Paraíba (IFPB), Avenida Presidente Tancredo Neves, s/n, Jardim Sorrilândia, ZC, Sousa, Paraíba, 58800-970, Brazil. vinicius.vilela@ifpb.edu.br.
Jazyk: angličtina
Zdroj: Veterinary research communications [Vet Res Commun] 2022 Jun; Vol. 46 (2), pp. 507-515. Date of Electronic Publication: 2022 Jan 05.
DOI: 10.1007/s11259-021-09878-0
Abstrakt: This study aimed to describe the transmission of T. gondii in naturally infected goats in the semiarid region of northeastern Brazil, through evaluating the serological status of these animals from one to 12 months of age. Seven goat farms were selected. During the first visit, an epidemiological questionnaire was applied. Blood samples were collected from pregnant goats and from their female offspring every month, to monitor them for anti-T. gondii antibodies, using the indirect fluorescence antibody test (IFAT). Out of 66 pregnant goats evaluated, 47% (31/66) (95% CI: 34.6% - 59.7%) were positive and out of 93 female offspring, 61.3% (57/93) (95% CI: 52.4% - 69.2%) were positive, in at least one month during the evaluation period. Among the positive female offspring, 43.3% (27/57) (95% CI: 39.7% - 56.9%) presented environmental infection and 56.7% (30/57) (95% CI: 43.4% - 66.3 %) probably had only colostral antibodies or vertical transmission. It was observed that 92,6% (25/27) from environmental infections occurred until reproductive age (six months) (p<0.0001). It was also noted that there is a correlation between the titration of mothers and offspring, until four months of age (p<0.0001). Large fluctuations in the presence of antibodies were observed among the animals over the months monitored. It can be concluded that the prevalence of anti-T. gondii antibodies within the herds was greater than what has been expressed in specific prevalence studies and that most goat become infected up to the six months of life in the studied area.
(© 2022. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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