The increasing development of the aquiculture in the last years has stimulated the interest in studying the best form of using the rations, because they increase in up to 60% the total cost of the production. The level of ascorbic acid incorporated in a diet must consider the variation of the raw material, the interactions between nutrients and the losses in the processing, storage, and leaching. The study was conducted to evaluate the thermal stability, photochemistry, and leaching of ascorbic acid on different rations and vitamin premix used in the aquiculture. Samples 1 (pelletized and later disintegrated ration, destined to feeding after-larvae marine shrimps (PL2-PL15) and 5 (vitamin premix) presented the biggest ascorbic acid losses during the thermal degradation, photochemistry, and leaching.
Animal nutrition; ascorbic acid; stability
