Abstract
AbstractExperimental diets were fed to juvenile Macrobrachium rosenbergii with subsequent measurement of metabolic response in terms of oxygen consumption and nitrogen excretion. Dietary formulation was evaluated by correlating observed metabolic response with levels of protein, lipid and carbohydrate in the diet. Rates of oxygen uptake and nitrogen production were also used to quantify sparing and specific dynamic action (SDA), 2 physiological processes known to influence nutrient utilization. Comparative analysis of the magnitude of sparing and SDA as well as calculation of several closely related qualitative indices of assimilation (atomic O:N, respiratory quotient) provide a suitable means of determining the dietary formulation producing the most efficient utilization of dietary protein.Preliminary results indicate that protein influences the magnitude Of SDA in the 15–25% range of dietary protein levels; levels in excess of 25% had no effect on SDA. In addition, SDA appears to be a threshold phenomenon, operating independently on the quantity of food intake. Measurements of exogenous nitrogen excretion and corresponding O:N ratios suggest that a fat:carbohydrate ratio of 1:3‐1:4 results in more efficient utilization of dietary protein than ratios of 1:l or 1:2, which result in excessive mobilization of protein for catabolic purposes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the annual meeting - World Mariculture Society
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
