PMID: 9430613Jan 31, 1998Paper

Metabolic requirements of red drum, Sciaenops ocellatus, for protein and energy based on weight gain and body composition

The Journal of Nutrition
B B McGoogan, D M Gatlin

Abstract

Precise formulation of diets that meet but do not greatly exceed nutritional requirements should assist in lowering feed costs for commercial aquaculture of red drum, Sciaenops ocellatus. In this study, protein and energy requirements of red drum for maintenance and maximum gain were determined by feeding a diet containing digestible protein (DP) at 36.5% and 14.2 kJ digestible energy (DE) per gram at various rates for 8 wk in two separate experiments. Changes in weight and whole-body energy and protein were measured and regressed against protein or energy fed using a nonlinear procedure. In the first experiment, juvenile fish [ approximately 3. 4 g initial body weight (BW)] were either starved or fed at one of the following g/(100 g BW.d): 0.5, 1, 2, 4, 6, or 8. The second experiment utilized larger red drum (approximately 5.5 g initial weight), fed 0.75, 1.5, 3, 5, 5.5, 6, 6.5 or 7 g/(100 g BW.d) to confirm and refine results from the first experiment. Based on maintenance of body weight in both experiments, red drum had a protein maintenance requirement of 1.5 and 2.5 g DP/(kg BW.d) whereas estimates based on maintenance of whole-body protein were 0.5 and 2.2 g DP/(kg BW.d). Energy requirements for maintenance of weight and ...Continue Reading

References

Oct 1, 1979·The Journal of Nutrition·K R RobbinsD H Baker
Jan 1, 1986·Annual Review of Nutrition·R P Wilson
Jun 1, 1973·The Journal of Nutrition·D J Lee, G B Putnam
Apr 1, 1993·The Journal of Nutrition·G R Nematipour, D M Gatlin

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