Estefanofilariose em bovinos

Abstract

ResumoA estefanofilariose é uma doença mundialmente distribuída e caracteriza-se por lesões na pele causadas por nematódeo do gênero Stephanofilaria. É mais prevalente no verão, devido à maior proliferação das moscas consideradas vetores do parasita, e acomete várias espécies animais. Nos bovinos caracterizase por uma dermatite crônica associada com erupção papular progredindo para nódulos, alopecia e ulceração crostosa. Apesar de ser uma doença conhecida há muitos anos, há poucos estudos e relatos sobre a mesma. A literatura é particularmente escassa no Brasil. Aspectos gerais sobre a epidemiologia, o agente, as manifestações e os métodos de diagnóstico, tratamento e prevenção foram revisados. Palavras-chave: Stephanofilaria sp., bovinos, diagnóstico, tratamento AbstractStephanofilariasis is a worldwide disease caused by the nematode Stephanofilaria that determines skin lesions in several definitive hosts. The prevalence is higher in summer due to the increase in fly population, the intermediate host. In cattle, the chronic dermatitis is characteristic begining with papules that progress to nodules, alopecia and ulcers with crusts. Despite it's long time recognition, there are few studies and reports about this disease, specially in Brazil. General informations of epidemiology, the agent, clinical signs, diagnosis methods, treatment and prevention were rewied.

Parasites in dairy cattle farms in southern Brazil

“…These flies can cause chronic dermatitis in cattle (horn fly), as well as being vectors of mastitiscausing bacteria (16), and nematode that causes stefanofilariosis, characterized by skin lesions, cranial to the mammary gland of the cow, caused by the genus Stephanofilaria (17), observed in this study, in a high percentage (56%) farms investigated. Approximately 62% of farms are facing serious problems with outbreaks of flies during the year, independent of the class 1 to 4 in this study.…”

Stephanofilariasis in beef cattle - case report

“…In summer periods, the occurrence of lesions is higher, in agreement with other authors, who reported the disease in dairy cows in Brazil. This fact is associated to the proliferation of the parasite biological transmitter vector in rainy seasons (Novaes et al, 1988;Miyakawa et al, 2009) (Miyakawa et al, 2010). In fact, the infestation by flies was reported by the farmer and observed in the cattle herd at the time of evaluation; however, taxonomic identification was not carried out.…”

“…The distribution of lesions throughout the body surface appears to vary according to the geographic region and Stephanofilaria species. It has been described appearing in the ventral abdominal region, medial canthus of the eye (North America), around the eyes, neck, withers, dew claws, (Indonesia), scapular region, limbs (India and Russia), teats and muzzle (Japan) (Miyakawa et al, 2010). In Brazil, most reports describe lesions occurring on the cranial part of the udder in dairy cows, which is commonly known as "lactating ulcer" (Miyakawa et al, 2009;Pazinato et al, 2013).…”

“…Stephanofilariasis is a cutaneous disease caused by nematodes of Stephanofilaria spp. genus that affects several animal species worldwide (Miyakawa et al, 2010). In cattle, it is clinically characterized by chronic, ulcerated, crusty and itchy skin lesions, which are distributed throughout different regions of the body surface (Miyakawa et al, 2009).…”

“…It also presents seasonal character, with greater occurrence in hot and rainy periods due to a larger proliferation of transmitter vectors. Those spreaders include Musca conduncens and Haematobia irritans (Miyakawa et al, 2010).…”