Profile of endoparasites in dairy cattle in the microregion of São João del-Rei, state of Minas Gerais, Brazil

Abstract

The present study provides the first evaluation of the endoparasite profile in dairy cattle from the microregion of São João del-Rei, Minas Gerais, Brazil, including seasonal variations in parasitic infections. Fecal samples were collected directly from rectum of 123 dairy cows and 160 calves on 15 farms. These were kept in insulated boxes and sent for immediate analysis. Using eggs per gram of feces (EPG) we found the following prevalences: Strongyloidea 43.5%, Moniezia sp. 7.6% and both Strongyloides sp. and Trichuris spp. 2.2%, in dairy cows. In calves, the prevalence was Strongyloidea 50.9%, Moniezia sp. 5.6% and Strongyloides sp. 1.9%. The third-stage larvae recovered from coprocultures from cows and calves consisted mainly of Cooperia spp., Haemonchus spp. and Ostertagia spp. EPG counts were significantly higher in calves. Regarding seasonality, the EPG counts and prevalence of Moniezia sp. tended to be higher in the dry period, whereas those of Strongyloidea were higher in the rainy season. Evidence suggests that parasite control and prophylaxis were inadequately managed on the farms studied here. The present parasitological profile correlates with those found by other similar studies, indicating that the main problem is still the inadequate management of parasite control and prophylaxis by farmers.

Diagnosis of Gastrointestinal Parasites in Bovines of the Department of Boyacá, Colombia

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Epidemiological survey of gastrointestinal infections by gastrointestinal nematodes and coccidia in cattle in the semiarid region of Northeastern Brazil

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“…Among nematode helminths, the most important and prevalent genera worldwide are those belonging to the superfamily Trichostrongyloidea, especially in tropical areas with a semiarid climate (Almeida et al, 2020). These helminths cause parasitic gastroenteritis in cattle (Micheloud et al, 2015;Henriques et al, 2021;Melo et al, 2021). Among enteric coccidia, Eimeria genera stands out because of its cosmopolitan distribution and parasitism in cattle worldwide, causing high levels of cases of coccidiosis, which can affect up to 100% of young cattle, especially during the first weeks of life (Faber et al, 2002;Gunathilaka et al, 2018;Hamid et al, 2019;Melo et al, 2022).…”

Avaliação da ocorrência de helmintos em bezerros leiteiros da região do oeste Goiano

“…que estão presentes no TGI do animal, nem a relação entre eliminação e morbidade no hospedeiro(BARBOSA, et al, 2021). De acordo comHenriques (2021), diversos autores compartilham o segmento que os ovos de strongyloides são os que mais afetam os animais…”