Produção de biomassa e teor proteico de Daphnia magna (Straus, 1820) submetida à três diferentes dietas

Detalhes bibliográficos
Ano de defesa: 2017
Autor(a) principal: Bezerra, Gildete de Souza lattes
Orientador(a): Sebastien, Nyamien Yahaut lattes
Banca de defesa: Sebastien, Nyamien Yahaut lattes, Piana, Pitágoras Augusto lattes, Vélez Escallón, Ana Maria lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Estadual do Oeste do Paraná
Toledo
Programa de Pós-Graduação: Programa de Pós-Graduação em Recursos Pesqueiros e Engenharia de Pesca
Departamento: Centro de Engenharias e Ciências Exatas
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://tede.unioeste.br/handle/tede/4245
Resumo: The use of live feed has been recommended in the larval stage of several species of fish, as it provides better survival and growth results when compared to those obtained with artificial diets. Therefore, the present study aims to evaluate the biomass and protein content of Daphnia magna submitted to three different diets. For this, three diets were evaluated: diet A (alga Scenedesmus acuminatus) at a concentration of 1.5x107 cells / mL per individual, diet B (cattle manure) at concentration of 13g / L and diet C (S. acuminatus and bovine manure) at Concentration of diet A and B over a period of 21 days. The experimental design was completely randomized, with three replicates of each treatment, the experimental unit consisting of polyethylene containers with capacity for 20L containing 10 neonates of Daphnia magna. The experiment was repeated three times, totaling 63 days of study. Every two days the physical parameters like temperature, Ph, oxygen and dissolved oxygen were measured. At the end of the experimental period, nutrient quantification of culture water and diets (phosphorus, nitrite nitrite, ammoniacal nitrogen, total nitrogen and organic nitrogen) were performed and the final biomass and protein content of the D. Magna The data obtained were evaluated in the STATISTICA 7.0 program. Diet C provided the highest mean biomass value, followed by diet A and B, with values of 344.12 g, 157.71 g and 81.93 g, respectively. The D. magna fed with diet B had a higher protein content of 2.56%, followed by D. magna fed diets C and A, with 2.17 and 1.32%, respectively. It is concluded that diet C is the most viable for feeding Daphnia magna.