Desenvolvimento de um complemento para ração animal a partir da biomassa de microalgas

Abstract

The high emission of CO2, besides aggravating the greenhouse effect in urban areas, represents a serious problem as it is extremely harmful to the quality of life of the people. Microalgae have been used in the treatment processes of atmospheric emissions due to the biofuel capacity of CO2 in their cellular biomass, which can be commercially used for the production of biofuels, for nutritional purposes and obtaining natural compounds with high market value. In this sense, the present work had as objective to use lyophilized biomass of microalgae cultivated in Laprebb-Utfpr, for the production of a complement for fishes ration, and thus, besides remedying the problem of excessive proliferation of algae adding value to them, contribute for the best scientific knowledge of the microalgae Chlorella sp. After the cultivation, separation and lyophilization process for the preservation of the samples, characterization tests were carried out, such as proteins, lipids, ashes, moisture, carbohydrates and biological tests. The physical-chemical tests were carried out in the microalgae Chlorella sp, in the pure Bottom Fish ration, and in fishes rations with the microalgae chlorella in 3 different proportions, with an increase in the protein content of 0.83%, an increase in the lipid content of 239.47%. In the carbohydrate content there is a decrease of 6.97%, as the ash and humidity fall 34.65% and 24.26% respectively in the replacement of 50% of microalgae in the feed composition. As fish demand a higher protein demand for their development than the other animals, and the protein content increases as the microalga is incorporated in the diet, the microalgae Chlorella sp with crude protein content of 36.9% is presented as promising supplement for fishes animal ration.