Resultado da pesquisa (2)

Termo utilizado na pesquisa cryptosporidiosis

#1 - Outbreak of cryptosporidiosis in calves in Southern Brazil, 34(8):749-752

Abstract in English:

ABSTRACT.- Vargas Jr S.F., Marcolongo-Pereira C., Adrien M.L., Fiss L., Molarinho K.R., Soares M.P., Schild A.L. & Sallis E.S.V. 2014. [Outbreak of cryptosporidiosis in calves in Southern Brazil.] Surto de criptosporidiose em bezerros no Sul do Rio Grande do Sul. Pesquisa Veterinária Brasileira 34(8):749-752. Laboratório Regional de Diagnóstico, Faculdade de Veterinária, Universidade Federal de Pelotas, Campus Universitário s/n, Pelotas, RS 96010-900, Brazil. E-mail: esvsallis@yahoo.com.br This paper describes the epidemiology, clinical signs and pathology of an outbreak of cryptosporidiosis in calves in Southern Brazil. Thirty-five out of 400 calves with 30-45 days of age were affected and 16 died. The calves were born weak and just after birth they had yellow diarrhea, weight loss, dehydration, depression, and death between 10 and 15 days after onset of clinical signs. Congestion of the bowel and mesenteric blood vessels were observed at necropsy. Intestinal distension by gas and dilation of lymphatic vessels were also observed. Microscopically, the intestine showed flattening of the villi with necrosis and atrophy. Adhered to the surface of the villus epithelial cells there were round basophilic structures of 2- to 5-μm-diameter compatible with Cryptosporidium spp. Electron microscopy revealed the presence of different stages of the agent adhered to the microvilli of enterocytes. We alert the importance of cryptosporidiosis as a primary agent of diarrhea in calves. Preventive measures to reduce economic losses, environmental contamination, and also decrease of risk for public health are necessary.

Abstract in Portuguese:

RESUMO.- Vargas Jr S.F., Marcolongo-Pereira C., Adrien M.L., Fiss L., Molarinho K.R., Soares M.P., Schild A.L. & Sallis E.S.V. 2014. [Outbreak of cryptosporidiosis in calves in Southern Brazil.] Surto de criptosporidiose em bezerros no Sul do Rio Grande do Sul. Pesquisa Veterinária Brasileira 34(8):749-752. Laboratório Regional de Diagnóstico, Faculdade de Veterinária, Universidade Federal de Pelotas, Campus Universitário s/n, Pelotas, RS 96010-900, Brazil. E-mail: esvsallis@yahoo.com.br Descrevem-se os aspectos epidemiológicos, sinais clínicos e a patologia de um surto de criptosporidiose em bezerros na região Sul do Rio Grande do Sul. De um lote de 400 bezerros de 30-45 dias de idade, 35 adoeceram e 16 morreram. Os bezerros nasciam fracos e logo após o nascimento apresentavam diarreia amarela, emagrecimento progressivo, desidratação, depressão e morte entre 10 e 15 dias após o início dos sinais clínicos. Na necropsia havia congestão dos vasos sanguíneos intestinais e mesentéricos. Havia distensão intestinal por gás e dilatação de vasos linfáticos. Microscopicamente havia achatamento das vilosidades intestinais, com necrose e atrofia. Aderidas à superfície das células epiteliais das vilosidades, havia estruturas puntiformes basofílicas de 2-5µm de diâmetro compatíveis com Cryptosporidium spp. A microscopia eletrônica revelou a presença de diferentes estágios do agente aderidos às microvilosidades de enterócitos. Alerta-se para a importância da criptosporidiose como agente primário de diarreia em bezerros. São necessárias medidas preventivas no que se refere ao manejo para diminuir as perdas econômicas e a contaminação ambiental, e, ainda, diminuir o risco para a saúde pública.


#2 - Importância de Cryptosporidium spp. como causa de diarréia em bezerros, p.452-456

Abstract in English:

ABSTRACT.- Feitosa F.L.F., Shimamura M.G., Roberto T., Mendes L.C.N., Peiró J.R., Feres F,C., Bovino, F., Perri S.H.V. & Meireles M.V. 2008. [Importance of Cryptospori-dium spp. as a cause of diarrhea in calves.] Importância de Cryptosporidium spp. como causa de diarréia em bezerros. Pesquisa Veterinária Brasileira 28(10):452-456. Curso de Medicina Veterinária, Universidade Estadual Paulista, Campus de Araçatuba, Rua Clóvis Pestana 793, Araçatuba, SP 16050-680, Brazil. E-mail: leydsonf@fmva.unesp.br The aim of this research was to evaluate the shedding of Cryptosporidium spp. oocysts in fecal samples from 14 calves from one dairy farm, from birth until 60 days old and from cows until eight weeks after parturition. The higher percentage of oocysts excreted was observed in 7-day-old calves. In the post-partum period 43.7% of cows were positive for Cryptosporidium oocysts. Further analyses were accomplished in 57 calves from another 32 milk farms, previously known as positive for Cryptosporidium, through oocysts fecal screening and clinical signs analyses until calves were 30 days old. Fecal samples from all animals that presented diarrhea were screened for the presence of bacteria, virus (Rotavirus and Coronavirus ) and protozoa (Eimeria spp.).

Abstract in Portuguese:

ABSTRACT.- Feitosa F.L.F., Shimamura M.G., Roberto T., Mendes L.C.N., Peiró J.R., Feres F,C., Bovino, F., Perri S.H.V. & Meireles M.V. 2008. [Importance of Cryptospori-dium spp. as a cause of diarrhea in calves.] Importância de Cryptosporidium spp. como causa de diarréia em bezerros. Pesquisa Veterinária Brasileira 28(10):452-456. Curso de Medicina Veterinária, Universidade Estadual Paulista, Campus de Araçatuba, Rua Clóvis Pestana 793, Araçatuba, SP 16050-680, Brazil. E-mail: leydsonf@fmva.unesp.br The aim of this research was to evaluate the shedding of Cryptosporidium spp. oocysts in fecal samples from 14 calves from one dairy farm, from birth until 60 days old and from cows until eight weeks after parturition. The higher percentage of oocysts excreted was observed in 7-day-old calves. In the post-partum period 43.7% of cows were positive for Cryptosporidium oocysts. Further analyses were accomplished in 57 calves from another 32 milk farms, previously known as positive for Cryptosporidium, through oocysts fecal screening and clinical signs analyses until calves were 30 days old. Fecal samples from all animals that presented diarrhea were screened for the presence of bacteria, virus (Rotavirus and Coronavirus ) and protozoa (Eimeria spp.).


Colégio Brasileiro de Patologia Animal SciELO Brasil CAPES CNPQ UNB UFRRJ CFMV