Avaliação da formação de nódulos oriundos da vacinação contra febre aftosa e seus impactos biológicos.

Abstract

Systematic vaccination of cattle against highly contagious diseases such as foot-and-mouth disease was one of the measures that provided the growth observed in the last years of the production and export of bovine meat in the country, in contrast to vaccination has caused several adverse effects, among them training of nodules. The presence of vaccine nodules promotes a significant financial depreciation on bovine carcasses. In this way the present work had as objective to investigate the influence of asepsis in the vaccine management on the appearance of vaccine nodules in cattle submitted to vaccination against foot and mouth disease, as well as to understand its formation through histological and microbiological studies. For this, experiments were carried out comparing the adoption of aseptic measurements during the vaccination, as well as the collection and analysis of nodules found in carcasses from slaughterhouse. The appearance of vaccine nodules appears to be related to several factors, mainly the addition of oily adjuvant in the vaccine formulation. The understanding of the appearance of vaccine nodules can make a great contribution in the fight against its appearance, favoring the obtaining of carcasses of higher sanitary quality, as well as reducing the damages caused by it to the producers.