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Twig extract of the apple mangrove affects the activities of trypsin, chymotrypsin and lipase in postlarval black tiger shrimp Penaeus monodon at varying feeding frequencies

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Author(s): Pedro Avenido | Augusto E. Serrano Jr

Journal: Extreme Life, Biospeology & Astrobiology
ISSN 2066-7671

Volume: 4;
Issue: 2;
Start page: 56;
Date: 2012;
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Keywords: apple mangrove | Penaeus monodon | feeding frequency | trypsin | chymotrypsin | lipase

ABSTRACT
This study aimed to determine the effect of the twig extract of the apple mangrove Sonneratia caseolaris on the activities of trypsin, chymotrypsin and lipase in the postlarval black tiger shrimpPenaeus monodon. Incorporating twig extracts of the apple mangrove S. caseolaris increased the activityof trypsin in juvenile P. monodon when fed at three to four times daily. When fed twice daily, trypsinactivity was at the same level as that in shrimp fed the control diet (without medication). The extractresulted in the enhanced chymotrypsin activity starting when shrimps were fed medicated diet twice dailyuntil four times daily. Lipase activity was not at all affected by the apple mangrove extract. Thesefindings demonstrated that the twig apple mangrove extract could be used as aprophylactic/therapeutant and was not deleterious to the nutrition of the black tiger shrimp; in fact, itstimulated protein digestion.
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