Ocorrência De Eimeriose Em Bezerros Criados Em Propriedades De Agricultura Familiar - Nota Científica

Abstract

ResumoA ocorrência de eimeriose foi pesquisada em 110 bezerros da raça holandesa pertencentes a dez propriedades de agricultura familiar. As amostras de fezes foram coletadas via retal e analisadas por métodos parasitológicos qualitativos e quantitativos. Amostras de fezes positivas para Eimeria sp. foram submetidas à esporulação in vitro para posterior identificação microscópica da espécie. Todas as propriedades apresentaram positividade enteroparasitária por espécies do gênero Eimeria havendo uma prevalência de 48,2% dos animais parasitados. Foram identificadas oito espécies do gênero Eimeria, sendo E. Bovis, E. auburnensis e E. alabamensis as mais frequentes, com 23,6%, 11,8% e 9,1%, respectivamente. Animais com até seis meses de idade manejados de forma coletiva e a pasto apresentaram maior positividade enteroparasitária. A elevada prevalência de infecção parasitária em animais jovens, principalmente por coccidios de considerável patogenicidade, é indicador de falhas no manejo sanitário, sendo necessário criterioso monitoramento com uso de fármacos específicos para controlar infecções e reduzir perdas zootécnicas. Palavras-chave: Bos taurus; eimeriose; Eimeria bovis. AbstractOccurrences of eimeriosis were investigated among 110 Holstein-Friesian calves belonging to ten small family farms. Feces samples were collected from the rectum and were analyzed using qualitative and quantitative parasitological methods. In vitro sporulation was induced in feces samples positive for Eimeria sp. in order to subsequently identify the species under the microscope. All the farms were positive for species of the genus Eimeria with a prevalence of parasitized animals 48.2% for Eimeria. Eight species of the genus Eimeria were identified, among which E. bovis, E. auburnensis, and E. alabamensis were the most frequent, accounting for 23.6%, 11.8%, and 9.1%, respectively. Animals of up to six months of age that were managed collectively on pasture presented greater positivity for enteroparasites. The high prevalence of parasitic infection in young animals, especially due to coccidia of considerable pathogenicity, is an indicator of failure of sanitary management. Careful monitoring using specific drugs for controlling infections and reducing losses from animal rearing is needed.

Prevalence of Eimeria spp. in calves from dairy farms in northern Paraná state, Brazil

“…A similar study carried out two decades ago in the same region of the present work found that 16.69% of the animals were infected by Eimeria spp. (GUIMARÃES et al 1995), what it is much lower than the occurrence of 51.25% found in the present study, however, Hillesheim & Freitas (2016) whose worked at southwestern of Paraná, observed 48.2% of samples positives for Eimeria spp., this was very similar with prevalence of the present study. Eimeria alabamensis was found in 26.75% of the samples of the present study, and 9.1% in the work of Hillesheim & Freitas (2016), but was not described by Guimarães et al (1995).…”

“…(GUIMARÃES et al 1995), what it is much lower than the occurrence of 51.25% found in the present study, however, Hillesheim & Freitas (2016) whose worked at southwestern of Paraná, observed 48.2% of samples positives for Eimeria spp., this was very similar with prevalence of the present study. Eimeria alabamensis was found in 26.75% of the samples of the present study, and 9.1% in the work of Hillesheim & Freitas (2016), but was not described by Guimarães et al (1995). These differences between our study and Guimarães et al (1995) work could be associate with the type of samples used, here feces samples were collected among animals without clinical signals, and the other one, most part of the animals (85.5%) had diarrhea.…”

“…positivity at northern (GUIMARÃES et al, 1995), and the second one 48.2% of Eimeria spp. positivity at southwestern (HILLESHEIM & FREITAS, 2016). Thus, the objectives of the present study were to determine the prevalence of Eimeria spp.…”

“…is highly variable, with prevalence rates ranging from 10 to 100% among animals tested in Europe and different regions in Brazil (LENTZE et al, 1999, STEWART et al, 2008, ALMEIDA et al, 2011, BRUHN et al, 2011KOUTNY et al, 2012). There are just two works concerning about eimeriosis in cattle from south Brazil, both were conducted in Paraná state (GUIMARÃES et al, 1995;HILLESHEIM & FREITAS, 2016), the first one observed 16.7% of Eimeria spp. positivity at northern (GUIMARÃES et al, 1995), and the second one 48.2% of Eimeria spp.…”

Prevalence of Eimeira Spp. Oocysts in Dairy Properties in Pelotas Region in Rio Grande Do Sul, Brazil / Prevalência De Oocistos De Eimeira Spp. Em Propriedades Leiteiras Da Região De Pelotas No Rio Grande Do Sul, Brasil

“…The diagnosis of the disease is based on clinical and epidemiological signs, in addition to a coproparasitological examination, in order to find fecal protozoan oocysts (HILLESHEIM & FREITAS, 2016).…”