Perfil das proteínas totais, ureia e ácido úrico no sangue do Kinosternon scorpioides (LINNAEUS, 1766) alimentado com dietas contendo quatro níveis de proteínas

Abstract

The Kinosternon scorpioides, popularly known as jurara, is a small semi-aquatic turtle, usually found in freshwater, with a wide distribution between Central and South America. Its distribution occurs in some Brazilian states, including Maranhão. Therefore, this study aimed to evaluate the biochemical effect of four different protein concentration diets on the proteins, ureogenic and uricogenic activities of the Kinosternon scorpioides. On the study were used nine male adult specimens with 395 gram of average weight, provided by the Nucleus of Wild Animals GRANATO/UEMA. The experiment was composed by four experimental periods which lasted 45 days each. Comercial fish food with 25%, 28%, 32% and 36% of crude protein, were supplied three times a week (Mondays, Wednesdays and Fridays) using a 2% rate per weight per day. Protein levels were randomly distributed between the specimens. Biometric data were also collected to measure the growth and weight gain. The concentrations of serum urea, serum uric acid and total serum protein were also determined. The obtained averages of the 25%, 28%, 32% and 36% crude protein treatment groups were: 4.30 mg/dL, 5.37 mg/dL, 4.78 mg/dL and 5.39 mg/dL for total proteins; 83.50 mg/dL, 21.00 mg/dL, 20.00 mg/dL and 59.00 mg/dL for urea; 4.69 mg/dL, 3.69 mg/dL, 0.53 mg/dL and 6.55 mg/dL for uric acid respectively. These values when compared with the literature demonstrated that total proteins, as well as uric acid corroborate with values found in the literature. However, urea was the one that suffered the greatest variation. The regression test as well as the analysis of variance (ANOVA) did not show statistically significant differences for the biometric variables