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This experiment evaluated soy protein concentrate (SPC) and meat and bone meal as a replacement for fish meal protein (FP) in the diet of Nile tilapia fingerlings. Five diets were evaluated including a control diet (50.0% crude protein [CP], of which half the protein came from fish meal [FM]), and four diets in which FM was replaced by increasing amounts of SPC (25.5, 50.0, 75.5, and 100.0%) in combination with meat and bone meal. At the conclusion of a 60-d growth trial, the following parameters were determined: final weight (FW), final length (FL), weight gain (WG), feed intake (FI), apparent feed conversion (AFC), survival (SUR), and production cost. The estimate of the best replacement value was determined by polynomial regression and the linear response plateau. The results showed significant (P < 0.05) improvement for WG and AFC ratio as FM was gradually replaced by SPC. The parameters FL and FI reached their optimum value at a replacement level of 100% SPC. These results show that it is feasible to use a combination of SPC and meat and bone meal in a balanced feed formulation as an alternative protein source in the diets of Nile tilapia fingerlings.

In this work we present an one-dimensional lattice stochastic model inspired in the moral theory of philosopher Thomas Hobbes [7]. The lattice is formed by L sites which can be occupied by a individual (moral or immoral) and a fiscal. Through of Monte Carlo Simulation we observed a second order phase transition from active to non-unique absorbing state.

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Dados abertos educacionais brasileiros carregam informações importantes para todo o contexto educacional, mas ainda pouco utilizados. A área vem crescendo nos últimos anos, mas ainda não gera conteúdo suficiente para todos os níveis da educação brasileira. Este mapeamento sistemático abrangeu artigos científicos que tratam de dados abertos educacionais brasileiros. O estudo conseguiu identificar que nos últimos três anos aumentou o interesse por esta área de pesquisa, mas a maioria focada no ensino superior, dados do ensino fundamental e médio vêm sendo pouco explorados. Este artigo traz um panorama da utilização de dados abertos educacionais no Brasil, demonstrando que ainda há muito o que investir nessa área de pesquisa.