Effects of dietary Amazonian lyophilized fruit Euterpe oleracea Mart. on fish Colossoma macropomum submitted to transport stress

In this study, a 30-day feeding experiment was carried to evaluate the effects of the intake of lyophilized <i>E. oleracea</i> (LEO) by tambaqui fish <i>Colossoma macropomum</i> juveniles after shipping stress. Six experimental diets were considered containing 0.00, 0.63, 1.25, 2.50, 5.00, and 10.0% (w/w) of LEO inclusion. In plastic bags, a simulated transport was performed for up to 3, 6, 12 and 24 h. Dietary LEO prepare the tambaqui for long transport, particularly improving the available of oxygen in the water. The dietary açai did not changes the glucose levels after transport. However, 1.25% and 10.0% LEO promoted a better hepatic antioxidant capacity, being higher 42% e 53% that to control when transported for up to 12 h. Nevertheless, the transport time was masterful to the impairment of antioxidant competence in the other organs studied (gills, brain, and muscle). In contrast, LEO counterbalanced the lipid peroxidation on brain, gills, liver and muscle of the tambaqui in up to 12 h, although still effective in the gills within 24 h. Thus, advantages are notable for LEO intake by tambaqui prior to transport. The inclusion of 2.50% to 5.00% LEO should be considered for provided higher resistance against lipid damage in all organs evaluated, besides improve the water quality conditions for tambaqui juveniles transported in short to medium duration.