Resumen del producto

The use of seaweed has food for abalone cultivation has some disadvantages, such as: variation in the availability of seaweeds, lower nutritional value and high harvesting cost. Currently is seek to improve nutrition in culture through the development of balanced meals. The objective of this research was to development a production process of balanced feed for abalone juveniles from two species of brown algae Macrocystis pyrifera and Eisenia arborea. Three food formulations were calculated using the program Zootec 3. The process to obtaining the nutritional bars, was developed using an orthogonal design including the following parameters: minimum water volume for rehydration of algae, temperature and extraction time. Response parameters were viscosity and toughness of the resulting paste. The best combination was: rehydration with 200 mL of water, extraction at 75 °C at pH 10, for 1 hour, to give a paste with viscosity higher than 500,000 mPa.s and a texture of 24 g cm-2. To prepare the nutritional bars a concentration of 0.5% polymethyl carbamide was used as binder. Stability tests, toughness, attractability, palatability and consumption were experimented in a commercial culture abalone facility. The nutritional bars in culture presented an average toughness of 619 g cm-2 and an average stability of 82.2%, also, all formulations were palatable. Regarding the attractability and consumption it was determined that the food bars produced with Eisenia arborea (ABEA) presented higher attractability and consumption among all formulated bars with 15.3% attraction and 52.1% consumption after 24 hours, surpassing the conventional food, which is fresh E. arborea and was similar to the commercial feed Brand ABKELP. We concluded that the ABEA food is highly recommended to use it as feed for abalone.

Palabras clave: food; seaweed; Algae; invertebrates

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