Determinación de la prevalencia de brucelosis bovina en la hacienda "Rancho Shilla", provincia del Cañar.

Abstract

The aim of this experimental study was to determine the prevalence of bovine brucellosis at the farm Rancho Shilla located in the province of Cañar. To achieve this goal, two types of tests were used for the diagnosis of seropositive animals. Blood samples were collected from the coccygeal veins in 40 animals of this study. Then they were analyzed at the laboratory using the Rose Bengal test (RBT) to detect the suspected cases. Afterwards, the suspected cases were tested using the competitive ELISA, which confirmed that the animals were seropositive for Brucella abortus. Then the animals were characterized as neonates and young and adult animals. Finally, the risk factors were analyzed, and the variables, such as sex, age, productive stage, abortions, symptoms. and vaccination were included. Descriptive statistics was used to analyze the results. A total of 18 suspected cases were confirmed using RBT, and a total of 17 suspected cases were confirmed using ELISA. When characterizing the animals, it was found that the disease is prevalent in neonates (5.9%), young animals (29.4%), and adults (64.7%). Regarding the risk factors, the variables, such as sex, abortions, and symptoms showed high significant differences, whereas age, productive stage, and vaccination did not show significant differences. To conclude, the prevalence of bovine brucellosis was 45% using RBT and 42% using ELISA. The prevalence was higher among female adults at the farm. Strain 19 or RB51 vaccines must be administered to have a brucellosis-free herd.