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image of Crustaceana

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'établir les effets du niveau de protéines alimentaires sur la bioénergétique de la crevette d'eau douce, Macrobrachium rosenbergii (De Man, 1879), des animaux ont été élevés avec des régimes alimentaires à teneurs différentes en protéines, soit 20%, 30%, 40% et 50%, respectivement. Les crevettes nourries avec un régime à 20% de protéines ont montré une prise de nourriture et un taux de croissance spécifique significativement inférieurs à celles nourries avec les autres régimes. L'excrétion moyenne d'ammonium des crevettes dans le groupe ayant un régime à 40% de protéines, est significativement plus élevé que chez les groupes à 20 et 30%. Le taux métabolique standard des crevettes nourries avec un régime à 30% de protéines est significativement inférieur à celui des crevettes nourries avec un régime à 20 et 50% de protéines. La valeur et le coefficient de l'action dynamique spécifique (SDA) augmentent significativement avec l'augmentation du niveau de protéines alimentaires.


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