This research was developed in the Arapa lake, located in Puno, physicochemical parameters and a simplified mathematical model for the phosphorus were evaluated. Experimental design "BACI" (Before-After-Control-Impact) was used to assess the impact on water quality. During the "After-Impact" period, 70000 trouts were farmed every 3 months; then the food consumed and increased biomass was registered for each batch of trout farmed. In this period significant difference in acidity, carbon dioxide, phosphates and electrical conductivity was expressed. Total suspended solids showed a decrease. Alkalinity, pH and dissolved oxygen remained constant. Product of the digestion of food 611 kg of phosphorus were discharged into the Arapa lake; then the simplified mathematical model was established to determine the evolution of dissolved phosphorus versus time. From de 611 kg of phosphorus discharged...

This research evaluated the effect of the inclusion of different lipid sources in the diet on the on the polyunsaturated fatty acids profile PUFA in Piaractus brachypomus fillet. Four types of oil were used; palm, corn, soy and fish oil, to formulate diets that comply with the nutritional requirements of the fish. These four diets were supplied for two months and a commercial diet was used as a control. The fatty acid profile was determined for oils, diets and fillets, before and after the experiment. The levels of omega-6 polyunsaturated fatty acids (n-6 PUFA) such as arachidonic acid (AA) and omega-3 polyunsaturated fatty acids (n-3 PUFA) such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were analyzed. The best PUFA profile in fillets (2,11; 4,64 and 7,0 % AA; EPA and DHA respectively) was obtained with the diet elaborated with fish oil, however, the best vegetable oil...

Advances in data management technologies are being adapted to resolve difficulties and impacts that aquaculture manifests, some aspects that over the years have not been fully managed, are now more feasible to solve, such as the optimization of variables that intervene in the growth and increase of biomass, the prediction of water quality parameters to manage and make decisions during farming fish, the evaluation of the aquaculture environment and the impact generated by aquaculture, the diagnosis of diseases in aquaculture fish to determine more specific treatments, handling, management and closure of aquaculture farms. The objective of this article was to review within the last 20 years the various techniques, methodologies, models, algorithms, software, and devices that are used within artificial intelligence, machine learning and deep learning systems, to solve in a simpler way, quic...

Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Acuicultura

The aim of this study was to evaluate the sedative effect of three products: valerian extract (Valeriana officinalis), benzocaine and tricaine methanesulfonate (MS-222) on stress levels produced by a simulated transport model in tilapia fingerlings. In a first part, the sedative dose of the products was determined based on the clinical characteristics that indicate depression of the central nervous system. In the second part, sedation and subsequent simulated transport for 3 hours were performed. The fish were euthanized, and blood samples were taken from the tail vein to determine cortisol (ELISA) and glucose (portable glucometer) levels, haematological parameters and mortality. The optimal doses of sedation were 200, 35 and 75 mg/l, respectively, for valerian extract, benzocaine and MS-222. After 3 h of simulated transport, cortisol and glucose values were similar or higher compared to...