High density culture of white bass X striped bass fingerlings in raceways using power plant heated effluent
White bass (Morone chrysops) X striped bass (M. saxatilis) hybrids weighing 1691/lb were initially stocked in five 24 ft/sup 3/ floating screen cages for 20 days. Hybrids averaging one inch in total length and 361 fish/lb were released in four 614 ft/sup 3/ concrete raceways. Two stocking densities, 2.6 and 5.1 fish/ft/sup 3/, were evaluated in the 94-day study using a flow rate of 300 gpm/raceway. Water temperatures averaged 79/sup 0/F and water quality was adequate throughout the production period. Fish were hand fed to satiation daily. Columnaris and Aeromonas hydrophila caused the most serious disease problems. Gas supersaturation was suspect in high mortality levels during cage culture of hybrid bass fry. Cannibalism may have been responsible for unaccountable losses prior to raceway stocking and at harvest. The study yielded 5773 hybrids weighing 658 lb. The high density treatment showed greater weight gain, average weight, average length and percent survival as well as improved food conversion. Results suggest that higher stocking densities and periodic grading may increase production and suppress cannibalism. 10 references, 3 figures, 3 tables.
- Research Organization:
- Tennessee Valley Authority, Knoxville (USA). Div. of Air and Water Resources
- OSTI ID:
- 5523327
- Report Number(s):
- TVA/ONR/WR-83/11; ON: DE84900282
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
FISHES
AQUACULTURE
POWER PLANTS
WASTE HEAT UTILIZATION
ANIMAL GROWTH
CULTIVATION TECHNIQUES
DISEASES
EXPERIMENTAL DATA
HYBRIDIZATION
STRIPED BASS
THERMAL EFFLUENTS
ANADROMOUS FISHES
ANIMALS
AQUATIC ORGANISMS
DATA
GROWTH
INFORMATION
NUMERICAL DATA
VERTEBRATES
WASTE PRODUCT UTILIZATION
320304* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization
520400 - Environment
Aquatic- Thermal Effluents Monitoring & Transport- (-1989)