Results: 44

Incidência de Anaplasma marginale, Babesia bigemina e Babesia bovis em bezerros no semiárido paraibano

Pesqui. vet. bras; 38 (4), 2018
Este estudo avaliou a incidência de infecções naturais pelos agentes da tristeza parasitária bovina (TPB), Anaplasma marginale, Babesia bovis e Babesia bigemina, em bezerros nascidos em cinco fazendas do semiárido paraibano. Em cada fazenda, foram coletadas amostras de sangue de 6 a 14 bezerros a ca...

Neospora caninum in properties in the west region of Paraná, Brazil: prevalence and risk factors

Abstract Neospora caninum is a heteroxenous protozoa, whose definitive hosts are canids and intermediate hosts are herbivores, and is of great importance in cattle. The objectives of this study were to determine the prevalence of N. caninum in dairy cattle and dogs, to detect the presence of the protozoa...

Detection and molecular characterization of Trypanosoma (Duttonella) vivax in dairy cattle in the state of Sergipe, northeastern Brazil

Abstract Trypanosoma (Duttonella) vivax is an important cause of economic losses among feedlot cattle. These losses are related to the morbidity, mortality, reproductive issues and decreased production. It is known that the clinical signs observed in infections by this protozoon are similar to other hemo...

Neosporosis epidémica y endémica: descripción de dos eventos en bovinos para cría
Endemic and epidemic bovine neosporosis: description of two events in beef cattle

Rev. argent. microbiol; 46 (4), 2014
El objetivo de este trabajo es describir dos eventos producidos en la provincia de Buenos Aires en los cuales Neospora caninum estuvo asociado a la ocurrencia de abortos en bovinos de cría para carne. En uno de ellos se registraron 11 abortos en 57 vaquillonas durante 45 días, en este evento fue 5 vece...

Control of infective larvae of gastrointestinal nematodes in heifers using different isolates of nematophagous fungi

The effect of different nematophagous fungi [Duddingtonia flagrans (AC001 and CG722) and Monacrosporium thaumasium (NF34)] with regard to controlling infective larvae (L3) of nematodes after gastrointestinal transit in female cattle (3/4 Holstein × Zebu) was evaluated. A total of 24 pubescent female cat...

Chemical identification of Tagetes minuta Linnaeus (Asteraceae) essential oil and its acaricidal effect on ticks

The control of tick species that affect animal production is vital for the economic welfare of the cattle industry. This study focused on testing the acaricidal activity of the essential oil from the leaves and stems of Tagetes minuta against several Brazilian tick species, including Rhipicephalus (Booph...

Contagem de carrapatos em bovinos no momento do banho carrapaticida em rebanhos leiteiros
Tick (Boophilus microplus) count on bovines at the moment of acaricide hand spray in dairy herds in Brazil

On most cattle breeding farms the acaricide hand spray frequence is determined by the number of ticks on the animals. The objetictive of this study was verify if should have an the level of infestation could be used to determine the necessity to undertake tick control. Tick counts on bovines at the momen...

Influência das helmintoses gastrintestinais sobre o quadro hematológico de bovinos mestiços Holandês x Zebu
Influence of nematode infections on hematological parameters of crossbred calves

Avaliou-se a influência das infecçöes naturais por helmintos gastrintestinais sobre o quadro hematológico de bezerros mestiços Holandês x Zebu, em uma propriedade da Zona Metalúrgica do Estado de Minas Gerais. Foram utilizados 14 animais com idade inicial de três a quatro meses, distribuídos igu...

Eficácia e persistência da associaçäo de cipermetrina 4,5 por cento + DDVP 50 por cento (Ectorfarma) no controle do Boophilus microplus e de larvas de Dermatobia hominis em bovinos leiteiros, mestiços, naturalmente infestados

Testou-se a sensibilidade da cepa de B. microplus do campus de Pirassununga da USP ao Ectofarma, na diluiçäo 1:400 através do biocarrapaticidograma. A ovipostura no grupo tratado (A) foi reduzida em 95,34 por cento, em relaçäo ao grupo controle (B) e a eclosäo de larvas provenientes dos ovos do gru...