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In order to assess the effects of dietary protein level on the bioenergetics of the giant freshwater prawn, Macrobrachium rosenbergii (De Man, 1879), animals were reared under a series of different dietary protein levels, i.e., 20%, 30%, 40%, and 50%, respectively. The prawns fed a 20% protein diet showed a significantly lower food intake and specific growth rate than those fed other diets. Mean ammonia excretion of prawns in the 40% dietary protein group was significantly higher than that of those in the 20 and 30% groups. Standard metabolic rate of the prawns fed 30% dietary protein was significantly lower than that of the prawns fed 20 and 50% dietary protein. Both magnitude and coefficient of the specific dynamic action (SDA) increased significantly with an increase in dietary protein level. Afin d'etablir les effets du niveau de proteines alimentaires sur la bioenergetique de la crevette d'eau douce, Macrobrachium rosenbergii (De Man, 1879), des animaux ont ete eleves avec des regimes alimentaires a teneurs differentes en proteines, soit 20%, 30%, 40% et 50%, respectivement. Les crevettes nourries avec un regime a 20% de proteines ont montre une prise de nourriture et un taux de croissance specifique significativement inferieurs a celles nourries avec les autres regimes. L'excretion moyenne d'ammonium des crevettes dans le groupe ayant un regime a 40% de proteines, est significativement plus eleve que chez les groupes a 20 et 30%. Le taux metabolique standard des crevettes nourries avec un regime a 30% de proteines est significativement inferieur a celui des crevettes nourries avec un regime a 20 et 50% de proteines. La valeur et le coefficient de l'action dynamique specifique (SDA) augmentent significativement avec l'augmentation du niveau de proteines alimentaires.
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Li Du (2002) studied this question.
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