Inoculação de ball 3 como método adicional de diagnóstico da causa de mortalidade de bovinos em Palmeira

Abstract

Ehrlichiosis is a disease caused by the bacterium Ehrlichia ruminantium and transmitted by Amblyomma ticks and is responsible for about 80-90% of deaths on livestock farms in Africa. The scarcity of studies carried out to evaluate the effectiveness of immunization methods in cattle in particular the use of BALL 3 and the constant deaths of animals on bovine farms make this study relevant. The study included the characterization of the exploration for the occurrence of Ehrlichiosis carried out via retrospective evaluation of Ball3 inoculations (2018 - 2021), the result of laboratory analysis of brains and ganglia of dead animals and the immunization of six calves using Ball3 including sending to the DCA-IIAM laboratory of brain and ganglia samples of animals that died in the exploration during the study. For the immunization of the six (6) calves, the method of infection and individual treatment was used, which consisted of the inoculation of BALL 3IV ( jugular vein), followed by thermometries for a period of 30 days and subsequent treatment with Oxytetracycline at a dose of 10 mg/kg bw immediately after the febrile reaction. The results showed a response to inoculation in more than 80% of the animals. Clinical signs, laboratory results, and animal reactions to the inoculum are indicative of lack of immunity. Based on the results of the study, Ehrlichiosis is the main cause associated with deaths and BALL3 is characterized as capable of conferring immunity.