Título
Effect of protein level in diet and feeding schedule on the digestive enzymatic activity of Macrobrachium tenellum juveniles
Autor
Luis Daniel Espinosa Chaurand
olimpia victoria carrillo farnés
FERNANDO VEGA VILLASANTE
Héctor Gerardo Nolasco Soria
Nivel de Acceso
Acceso Abierto
Referencia de publicación
doi: DOI: 10.3856/vol47-issue5-fulltext-3
URL/URL: http://lajar.ucv.cl/index.php/rlajar/article/view/vol47-issue5-fulltext-3
ISSN/ISSN: 0718-560X
Materias
Resumen o descripción
"This study assessed the effect of protein level in diet and feeding schedule on the digestive enzymatic activity of Macrobrachium tenellum juveniles. Freshwater prawn juveniles (0.31 ± 0.004 g and 32.48 ± 0.27 mm) were fed diets with 20, 25, 30, 35 and 40% crude protein (CP) (p/p). In a second experiment, feeding schedules were assessed at 08:00, 14:00 and 20:00 h with feed at 30% CP with juveniles of 0.22 ± 0.002 g and 29.36 ± 0.28 mm. In both experiments, five organisms were sampled after 60 days of treatment in a time-lapse of one hour (08:00 to 09:00 h) per experimental tank and treatment. The enzymatic extract was obtained from the complete organisms to determine specific general protease, trypsin, chymotrypsin, amylase and lipase activities. Greater general protease, trypsin and lipase activities were observed in feed at 40% CP. The feeding schedules with greater general protease, trypsin, lipase and amylase activities were found at 14:00 and 20:00 h. Chymotrypsin did not show differences among treatments at CP levels or feeding schedules. Protein level in diets for M. tenellum modified basal digestive enzymatic activity and increased proteolytic and lipolytic activities, while it decreased amylolytic activity as the inclusion of CP level increased in the diet; likewise, the activity was modified by feeding schedule, showing a direct correlation between the increase in digestive enzymatic activity and food offering at the end of the day."
Editor
PONTIFICIA UNIVERSIDAD CATÓLICA DE VALPARAÍSO
Fecha de publicación
2019
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Fuente
Latin American Journal of Aquatic Research
Idioma
Inglés
Repositorio Orígen
Repositorio Institucional CIBNOR
Descargas
246