Efeito da avaliação da vacinação antirrábica e da suplementação com diferentes doses do probiótico na resposta imune humoral em bezerros nelore

Abstract

Aimed to evaluate the effects of supplementation of probiotics on the humoral immune response in cattle. Forty-two male animals, whole, Pure Origin (PO) Nellore, aged 12 months, all vaccinated with a single dose of rabies vaccines were randomly divided into 3 groups (14 bovine animals/group): Control group (GC) received 70 grams of mineral/animal durig 60 days supplement; the probiotic group GP3 received 3 grams of probiotic added 70 grams of mineral/animal durig 60 days supplement; the probiotic group GP8 received 8 grams of probiotic added 70 grams of mineral/animal durig 60 days supplement. Statistical analyzes were compared between groups control, 3, and 8 grams. Blood samples of animals were collected days 0, 30 and 60 days. Individual neutralizing antibody titers were determined by a neutralization technique based on the Rapid Fluorescent Focus Inhibition Test (RFFIT) and Fluorescent Inhibitio Microtest (FIMT). There were statistically significant differences between the mean serum concentrations between groups control, GP3 and GP8. Concluding that the administration of probiotics interfered in the humoral immune response.