Localisation of enzymes in the digestive system during early development of the grouper (Epinephelus coioides)
This study was undertaken to investigate the occurrence of some digestive enzymes in the gastrointestinal tract during early development in the grouper. This work was conducted to provide information on formulating an appropriate feeding scheme and an artificial diet for the early development of the grouper, Epinephelus coioides. Larvae of E. coioides were reared in 5 tonne rectangular concrete tanks. The digestive enzymes localized were acid phosphatase (ACP), alkaline phosphatase (ALP), nonspecific esterase (NSE), aminopeptidase (AMP), trypsin (TRP), maltase (MAL) and lipase (LIP). Weak enzyme activity occurred during the yolk sac stage. High AMP activity started at day 14 prior to Artemia feeding at day 16. Fluctuations in TRP activity might be related to stomach formation. Occurrence of MAL during early development demonstrated a capacity to digest carbohydrates. An increase in LIP activity coincided with the occurrence of gastric glands. Insignificant changes in digestive enzymes were observed in the metamorphosing grouper larvae from day 40 to 60.
Quinitio, G. F., Sa-an, A. C., Toledo, J. D., & Tan-Fermin, J. D. (2004). Localisation of enzymes in the digestive system during early development of the grouper (Epinephelus coioides). In M. A. Rimmer, S. McBride, & K. C. Williams (Eds.), Advances in grouper aquaculture (pp. 30–34). Canberra: Australian Centre for International Agricultural Research.
シリーズACIAR Monograph 110
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Borlongan, Ilda G.; Coloso, Relicardo M.; Golez, Nelson V. (Aquaculture Department, Southeast Asian Fisheries Development Center, 2002)This chapter provides basic information on the feeding habits and behavior, and physiology of fishes and crustaceans. The mechanisms that control the movement and digestion of food, methods of assessing digestibility of ...
Evaluation of leguminous seed meals and leaf meals as plant protein sources in diets for juvenile Penaeus indicus Eusebio, Perla S.; Coloso, Relicardo M. (Society of Israeli Aquaculture and Marine Biotechnology, 1998)The potential of locally available legumes (white cowpea, Vigna unguiculata, and green mung-bean, Vigna radiata) and leaf meals (papaya, Carica papaya, and cassava, Manihut esculenta) in combination with defatted soybean ...
Apparent digestibility coefficient of nutrients from shrimp, mussel, diatom and seaweed by juvenile Holothuria scabra Jaeger Orozco, Zenith Gaye Almeda; Sumbing, Joemel Gentelizo; Lebata-Ramos, Ma. Junemie Hazel ; Watanabe, Satoshi (Wiley, 2014)The ability of Holothuria scabra to digest nutrients, such as organic matter (OM), protein and carbohydrate from animal and plant feed ingredients was investigated. Four test feeds prepared by mixing sand with single ...