Flávio Ávila

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Sera of 204 cows in Jaboticabal, S.P., Brazil were examined by indirect immunofluorescent test for detecting anti-Toxoplasma antibody. Assuming titers from 1:64 as indicative of toxoplasmic infection it was observed 32.3% of positive reactions. The antibody titers even to 1:256 represented 7.8% of the reacting animals. The serological titers varied from(More)
A total of 99 pregnant cows were divided into eight groups submitted to the following treatments: group I (n = 29) consisted of unvaccinated cows whose calves did not receive a probiotic and was used as control. Group II (n = 10) consisted of vaccinated cows whose calves did not receive a probiotic. Groups III, IV and V (n = 10 neach) consisted of(More)
Three-hundred faecal swabs were obtained from pigs with diarrhoea in farms located in different areas of the Ribeirao Preto region in the State of Sao Paulo. One-hundred Escherichia coli strains were isolated and tested for production of thermolabile (TL) and thermostable (STRa and STb) enterotoxins, and for the presence of colonization factors F4, F5 and(More)
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