Dietas alternativas à base de subprodutos do arroz como opção para nutrição de Drosophila melanogaster

Abstract

This objective study is to elaborate alternative diets based on rice by-products for the nutrition of Drosophila melanogaster and verify acceptance of diets elaborated by the experimental model. To indentify the chemical composition of the samples chemical analyzes were carried out in: rice polishing bran (RPB), rice burnishing bran (RBB), medium corn flour (MCF) and coarse corn flour (CCF). The composition of rice flour was obtained in the literature. The diets was developed with the ingredients used in standart diet, replacing médium corn flour and coarse corn flour with rice polishing bran and rice brunishing bran in the first diet (RB), in the second diet (RBF) replacing médium corn flour and coarse conr flour with rice polishing bran, rice brunishing bran and rice flour, seeking to equate the nutritional composition of the standard diet. In the laboratory, consistency of the diets and the food consumption was tested, to visualize the acceptance of flies to elaborate diets. In the chemical analyzes was observed statistically higher values of ash, lipids, proteins and dietary fiber in rice bran copared to courn flours. As for carbohydrates, a greater amount was observed in rice flour samples, later in the sample MCF, CCF, RPB and RBB, respectively. The caloric value of MCF, CCF, RPB and rice flour did not differ statistically. Analyzing proteins content of these three diets, the RBF diet and the standard diet contained similar values, the RB diet showed a higher concentration of this macronutrient. The RB diet and RBF diet had a higher amount of lipids than the standard diet. As for the carbohydrate content both the RB diet and RBF diet had a higher amount than the standard diet. Their caloric value remained similar. In the food consumption test, the consumption of the standard diet RB diet and RBF was analyzed, there was no statiscial difference between these three diets. The results of the presente study provided evidence that it is possible to develop diets based on rice by-products for the nutrition of Drosophila melanogaster, with nutritional quality higher to the standard diet and there was acceptance of these diets by the experimental model.