Cherax quadricarinatus Astacoidea Juveniles crayfish juvenile ACUICULTURA AQUACULTURE CHERAX QUADRICARINATUS DECAPOD DECAPODOS DIGESTIVE ENZYMES ENZIMAS DIGESTIVAS HEPATOPANCREAS Hepatopancreas NUTRICION NUTRITION POINT OF NO RETURN POINT OF RESERVE SATURATION PUNTO DE NO-RETORNO PUNTO DE SATURACION DE RESERVA REFUGIOS SHELTERS crustacean culture molt survival Animalia Compensatory growth Intermittent feeding Point-of-no-return Point-of-reserve-saturation