Growth, survival, quality and digestive enzyme activities of larval shrimp fed microencapsulated, mixed and live diets |
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Authors: | R. Pedroza-Islas,P. Gallardo,E.J. Vernon-Carter,T. Garcí a-Galano,C. Rosas,C. Pascual,& G. Gaxiola |
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Affiliation: | Departamento de Ingenierías, Universidad Iberoamericana, Mexico City, México;; Grupo de Biología Marina Experimental, Facultad de Ciencias, UNAM Sede Cd. del Carmen, Campeche, México;; DIPH, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, México;; Centro de Investigaciones Marinas, Universidad de la Habana, Cuba |
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Abstract: | An artificial diet for shrimp larvae was microencapsulated with a polysaccharide blend [66% gum arabic, 17% mesquite gum and 17% maltodextrin 10 dextrose equivalent (DE)]. Microencapsulated diet (MD) was fed to mysis alone, as a co‐feed with the microalgae Chaetoceros cerastosporum and Tetraselmis chuii (mixed) and compared with a live diet (control) of C. cerastosporum, T. chuii and Artemia nauplii. No significant differences (P > 0.05) were detected in growth rates, development and quality indexes of larvae fed the three experimental diets. All diets supported survival percentages of >90%. Shrimp larvae fed MD and mixed diets had higher specific trypsin activity and soluble protein content than those fed live diet. Amylase activity decreased in larvae fed the mixed and MD apparently due to the carbohydrate composition of the diet. The results indicate that it is possible to substitute a live diet with a microencapsulated one (with a wall composition made up of a polysaccharide blend) in Litopenaeus vannamei mysis. |
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Keywords: | bioassay biopolymers live diet microencapsulated diets shrimp larvae |
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