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  • 1
    Publication Date: 2021-05-19
    Description: Con el objetivo de evaluar el efecto sobres el crecimiento y la supervivencia, de diferentes densidades de siembra de tilapia roja en jaulas de diferentes volúmenes (4, 6 y 16 m3) se desarrollaron tres ciclos de engorde en la bahía de Casilda, provincia Sancti-Spíritus. La selección del sitio se realizó a partir de una red de cinco estaciones muestreadas en lluvia y seca para determinar los parámetros físico, químicos, batimétricos y turbidez. Los alevines se adaptaron al agua de mar en tanques de 12 m3, con flujo de agua marina (1.4 - 2.8 L/segundo) durante 24 horas con supervivencia de 96%. Al emplear densidades de 73 y 184 alevines/m3 en jaulas de 6 m3, no se observaron diferencias significativas (p〉 0.05) en el crecimiento y supervivencias (98%), con rendimientos de 19 – 54 kg/m3. Al emplear jaulas de 4 m3 y densidades de 150, 250 y 350 alevines/m3, los rendimientos aumentaron entre 37 y 67 kg/m3. El crecimiento fue menor (p〉 0.05) con la mayor densidad. En jaulas de 16 m3 se evaluaron densidades de 140, 250 y 350 alevines/m3, el crecimiento fue mayor (p〉 0.05) con la densidad menor (140/m3). Los rendimientos variaron entre 21 – 54 kg/m3, siendo menor a la densidad de 350/m3, debido a las bajas supervivencia (31.4%), por deficiencia de oxígeno. El cómputo químico de los alimentos comerciales, mostraron que todos los aminoácidos de la tilapia están representados y la Lisina apareció como aminoácido limitante. El impacto al medio fue reducido con aportes de fósforo y nitrógeno entre 0.1 - 0.33 y 0.024 – 0.079 kg/t de alimento respectivamente.
    Description: In order to evaluate the effect on growth and survival of red tilapia fingerlings, different densities stocked, in cages with 4, 6 and 16 m3, three cycles of on growing were developed in Casilda Bay. The site was selected from a network of five stations sampled, in wet and dry seasons and determines the physical parameters, chemical, bathymetric and turbidity. The fingerlings were adapted to seawater in tanks of 12 m3, with flowing seawater (1.4 - 2.8 L / sec) for 24 hours and survival of 96% were obtained. Stock densities of 73 and 184 alevines/m3 were used in cages of 6 m3, no significant differences (p〉 0.05) in growth and survival (98%) were obtained, and yields of 19 - 54 kg/m3. In cages of 4 m3 were essayed densities of 150, 250 and 350 alevines/m3. Yields increased between 37 and 67 kg/m3, but growth was lower (p〉 0.05) at higher density. In 16 m3 cages were evaluated densities of 140, 250 and 350 alevines/m3, growth was higher (p〉 0.05) with lower density (140/m3). Yields ranged from 21 - 54 kg/m3, being less in 350/m3 density, due to low survival (31.4%) by oxygen deficiency in these cages. Chemical score of commercial foods showed that all amino acids of tilapia are represented in feeds and lysine appeared as a limiting amino acid. The environment impact culture was reduced, phosphorus and nitrogen inputs varied from 0.1 to 0.33 and from 0.024 to 0.079 kg/t of feed respectively.
    Description: Published
    Description: grow out, red tilapia
    Keywords: Food ; Seawater ; Stocking density ; Cages ; Environmental impact ; Yield
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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