Epidemiological and clinical aspects of the first outbreak of bovine mastitis caused by Prototheca zopfii in Goiás State, Brazil.
The purpose of this survey was to describe the occurrence of bovine mastitis caused by Prototheca zopfii in Goiás State, Brazil. Samples of milk, environment and udder were taken from a herd of 120 Holstein cows. Sabourauds dextrose agar plates were incubated under aerobic conditions at 37 degrees C/96 h, for microbiological analysis. Somatic cell count and milk composition were also determined. Histological sections from two udders were stained with HE and PAS. Prototheca zopfii was identified in six cows whose milk had a watery appearance. They also showed a pronounced decrease in milk yield, fat and lactose. Pronounced infiltration of mononuclear cells, atrophy of alveoli and fibrosis were observed. The presence of this agent in other herds in the State is highly likely.
Centro de Pesquisa em Alimentos, Escola de Veterinária, Universidade Federal de Goiás, Brazil. vbueno@vet.ufg.br.
Válter Ferreira Félix
VF
Bueno
Albenones José
AJ
de Mesquita
Rodrigo Balduino Soares
RB
Neves
Marcos Almeida
MA
de Souza
Andréa Rentz
AR
Ribeiro
Edmar Soares
ES
Nicolau
Antônio Nonato
AN
de Oliveira
D000818:Animals; D001938:Brazil / Q000453:epidemiology; D002417:Cattle; D002452:Cell Count / Q000662:veterinary; D004196:Disease Outbreaks / Q000662:veterinary*; D005260:Female; D007239:Infections / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D008321:Mammary Glands, Animal / Q000382:microbiology; D008414:Mastitis, Bovine / Q000453:epidemiology* / Q000382:microbiology*; D008892:Milk / Q000166:cytology / Q000382:microbiology; D011525:Prototheca / Q000254:growth & development*