Qualidade da água e do pescado (tilápia-do-Nilo - Oreochromis niloticus) oriundos de pesque-pagues situados no estado de São Paulo

• Autor(a) principal: Siqueira, André Buzutti de [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/128155; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/17-09-2015/000849584.pdf
• topic: Peixe - Criação; Agua - Analise; Pescados; Microbiologia; Saúde pública; Fishes

The fish and pay constitute recent activity, widespread throughout Brazil, one option for leisure, entertainment and services, lacking adequate regulatory framework and its necessary safeguards. Barely establishments installed, irregular, with inadequate management without technical supervision and inspec tion may account for environmental impacts and damage to public health. In this work proposed to evaluate the influence of seasonal variation, represented by the dry season and the rainy season on water quality and fish (Nile tilapia - Oreochromis niloticus) from five different fish and pay located in São Paulo. Physical and chemical analysis (temperature, dissolved oxygen and pH) were performed and microbiological cultivation of water (fecal coliform), analysis of the installation time of rigor mortis-full in specimens of fish and quantitative microbiological analysis (estimates of mesophilic aerobic microorganisms, of psychrotrophic aerobic microorganisms and bacteria of the genera Pseudomonas spp and Aeromonas spp.) of the surface slime, gills, of the abdominal cavity wash, skin and muscles with the Nile tilapia fillets. There was a significant difference (p <0.05) between the periods analyzed for temperature, dissolved oxygen and pH of the cultivation of water from fish and pay. For fecal coliforms, 20% (4/20) of the tanks of fish and pay were considered unsuitable for fish production during the rainy season. Both the surface slime, as to the gills, there was a reflection of that condition for, respectively, 10% (3/30) and 20% (6/30) with excess fecal coliform in periods of drought and rain. Regardless of the period after slaughter by brain destruction was found that the rigor-mortis reached its fullness five hours after is harvesting. Most of these parameters, represented by microbiological estimates of surface slime, gills, wash the abdominal cavity and the muscles with skin, there was a significant difference (p <0.05) ...