Avaliação dos microminerais ferro, cobre, zinco e manganês em equinos da raça Puro Sangue Lusitano antes e após exercício

Abstract

In order to assess the quantities of iron, copper, zinc and manganese trace minerals in Purebred Lusitano horses before and after exercise, 30 healthy males from a property in the municipality of Martinópolis, São Paulo were used, certified by clinical and laboratory assessments. Blood samples were taken before and after 30 minutes of exercise in order to measure trace elements. The experimental design was totally randomized, in 30 repetitions. The concentration of iron, copper, zinc and manganese metallic ions was determined by atomic absorption spectrophotometry. To have results for statistical analysis, the t test was performed, considering statistical significant for p values less than 5%. It was observed that after exercising, the serum activity of iron has not changed (p = 0.2365), while copper values have significantly risen after training. On the other hand, zinc and manganese trace minerals decreased after exercise (p < 0.001). It can be concluded that exercise of short duration significantly alter the serum concentration of trace Cu, Zn and Mn in Purebred Lusitano horse. The hemoconcentration caused by dehydration due to sweating is the most likely cause of increased serum levels of Fe and Cu and Zn decreased.