Author

D. D. Assenheimer

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Open access 2026

Serological exposure and associated factors for Toxoplasma gondii, Neospora caninum, and Leishmania spp. in subsistence-farmed goats from northeastern Brazil

Abstract This study aimed to estimate the seroprevalence, describe the spatial distribution, and identify factors associated with exposure to Toxoplasma gondii, Neospora caninum, and Leishmania spp. in goats raised on subsistence-based family farming systems in Alagoas State, north-eastern Brazil. A total of 388 serum...

A. Zacarias, Alyce Vittória de Lima Silva, Lavínia Beatriz Fernandes da Silva et al. · Ciência Animal Brasileira · 0 citations

Open access 2026

Molecular detection of trypanosomatids and apicomplexans in owl tissues from the coast of Santa Catarina, Brazil

ABSTRACT Owls (Strigiformes) are widely distributed across terrestrial ecosystems and play a key role as top predators, potentially exposing them to diverse infectious agents. This study aimed to investigate the presence of protozoan of veterinary and zoonotic relevance in owl tissues from the southern coast of Santa C...

D. D. Assenheimer, G. V. A. Samoel, M. Dums et al. · Arquivo Brasileiro de Medici... · 0 citations

Open access 2026

Anthelmintic resistance profile of sheep in the central region of Rio Grande do Sul, Brazil

ABSTRACT Gastrointestinal parasites, particularly Haemonchus contortus, cause significant economic losses in Brazilian sheep production. Rio Grande do Sul (RS) provides favorable conditions for both sheep farming and parasitic infections. This study evaluated the efficacy of various anthelmintics on 20 farms from diffe...

R. A. D. Barcelos, F. Fernandes, D. D. Assenheimer et al. · Arquivo Brasileiro de Medici... · 0 citations