Serum Urea, Creatinine and Enzymatic Activity of Alkaline Phosphatase in Nelore Cattle Raised in the Micro Upper Middle Gurguéia

This study aimed to evaluate the influence of age and sex on serum concentrations of urea, creatinine and alkaline phosphatase and provide possible reference values for Nelore cattle raised in the micro region Upper Middle Gurgueia. Blood samples from 55 cattle, clinically healthy and reared in extensive system were randomly collected and examined. Treatments were formed according to the sex of animals ranging in age from 12 to 24 months: males (n=13) and female (n=27), and among females according to age: Group I, animals aged 0-12 months (n=18) and Group II animals with 12 to 24 months (n=27). All biochemical analyzes were performed in semi-automatic biochemical analyzer according to the colorimetric method. The gender factor was decisive and exerted influence (p<0.05) on serum levels of urea, creatinine and alkaline phosphatase enzyme, with values within the reference, and the females were superior to urea and creatinine. When evaluated on the age variable, these blood parameters showed effect (p<0.05) concentrations of urea and alkaline phosphatase, and the amounts of urea; females from 0.0 to 12 months were below benchmarks. Serum levels of urea, creatinine and enzymatic activity of alkaline phosphatase of cattle raised in the micro region Upper Middle Gurgueia are influenced by age and sex, their of determination specific region establishes parameters for better interpretation of research results, for a better interpretation of the parameters as well as to assist in the early diagnosis of possible diseases that may comprise the productive system.