No abstract

RESUMONa atualidade, a produção avícola na região sudeste do Brasil vê-se negativamente afetada pelo aumento das temperaturas, com bruscas alterações do ambiente externo sobre o interior das instalações de criação, e as repetidas ondas de calor provocam perdas na produção pela exposição ao estresse por calor o que acaba causando aumento na mortalidade, e consequentemente, perdas econômicas. Nesta pesquisa, utilizou-se um sistema microprocessado de coleta de variáveis meteorológicas, de forma a realizar a comparação entre o desempenho produtivo de galpões de criação de aves poedeiras numa granja comercial situada no município de Rinópolis/SP buscando identificar se as diferenças nas características construtivas dos galpões podem impactar a produção por meio de ampliação dos índices de mortalidade decorrentes das elevações de temperatura, detectadas por meio dos sensores que permitem inferir os valores dos indicadores de indice de temperatura e umidade (ITU), indice de temperatura de globo negro e umidade (ITGU) e da Entalpia dos ambientes de criação. Os resultados apontam para a possibilidade da comparação por meio do método proposto e permitiu aos pesquisadores entender que há, sim, correlação entre a mortalidade das aves e o ambiente térmico dos galpões de produção.

No abstract

There are few studies about the influence of fruit maturation and post-harvest resting on seed composition, which can be necessary for seedling development and future establishment. Thus, the objective of this study was to evaluate the effect of maturation and post-harvest resting of fruits on the macronutrient and protein content of sweet pepper seeds. The experimental design was a randomized block, with eight treatments, in a 4 × 2 factorial arrangement. The first factor was fruit maturation stages (35, 50, 65 and 80 days after anthesis), and the second, with and without post-harvest resting of the fruits for 7 days. The characteristics evaluated in seeds were the dry weight of one thousand seeds, macronutrient content, and content of albumin, globulin, prolamin and glutelin proteins. There were reductions in K, Ca and Mg content, and an increase in seed content of albumin, globulin and prolamins as a function of the fruit maturation stage. Post-harvest resting of the fruits provided higher Ca content and protein albumin in seeds. The decreasing order of macronutrients and protein content in seeds, independent of fruit maturation and resting stage of the fruits, was N > K > P > Mg > S > Ca, and albumin > globulin ≈ glutelin > prolamine, respectively.

The treatment and reuse of water in Brazil is one of the most discussed issues in the agricultural field. In recent years, the scarcity of water changes in the rainfall regime has impacted production. The management of water resources aims to make better use of one of the means that most uses water, agriculture. Reuse and treatment are essential through innovative technologies that corroborate better water efficiency to extract the maximum water capacity and avoid waste. In an increasingly sustainable scenario, which seeks cleaner environments, with little or no emission of pollutants and losses of water resources, the reuse and treatment or possible disposal in a correct way is always an object of study to achieve the effect in use. of water, seeking better production in crops and reducing environmental impacts. This work aims to analyze the historical evolution of technologies used to treat wastewater and sewage sludge. We can see that the theme has grown in recent years, and several technologies are emerging to improve water treatment more efficiently and effectively. Thus, we conclude that the reuse of wastewater and sewage sludge has a large field of study and application in agriculture.