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Growth Rates of Juvenile Red Drum Sciaenops ocellatus Reared on Commercial Salmon Feed in Fresh and Salt Water
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wurts, William A. Stickney, Robert |
| Copyright Year | 1993 |
| Abstract | The red drum Sciaenops ocellatus meets the criteria for an excellent aquaculture species. Under ideal conditions, red drum have attained sizes from 0.45 kg to 1.36 kg in one year (Luebke and Strawn 1973; Robert L. Colura, personal communication). Red drum typically reach 450 g in one year on their natural feeding grounds (Simmons and Breuer 1962; Harrington et al. 1979). The purpose of this research was to evaluate growth equations and to calculate growth rates for red drum reared in fresh and salt water. The experiments were conducted at the Aquaculture Research Center of Texas A&M University. Red drum were cultured in three different environments: salt water containing 35 g/L total dissolved solids (TDS), dilute sea water (5 g/L TDS), and fresh water (0.9-1.9 g/L TDS) with different hardness concentrations. Experimental units (114 L tanks each maintained by an under-gravel airlift biofilter), replicated three times for each level of total dissolved solids and hardness, were stocked with 15 red drum weighing between 1-3 g each. Fish were fed daily at a rate of 5.0-6.0% of tank biomass with commercial salmon feed (48% protein). Feeding rates were adjusted biweekly after fish weights were obtained. Details of water treatment preparation and fish performance were presented by Wurts and Stickney (1989). Feasibility studies were conducted with larger fish (18-700 g). One of these experiments took place in a recirculating, dilute seawater system (5 g/L TDS) and the other in a freshwater pond (l. l g/L TDS with 123 mg/L calcium) as described by Wurts (1987). Weight data were transformed using the natural logarithm (ln weight). Linear regression analyses were performed on transformed, biweekly weight data from each experimental group of fish, weighing 1-3 g initially. This analysis was applied to determine if red drum growth was adequately described by the exponential growth function (Everhart et al. 1953): |
| Starting Page | 422 |
| Ending Page | 424 |
| Page Count | 3 |
| File Format | PDF HTM / HTML |
| DOI | 10.1111/j.1749-7345.1993.tb00174.x |
| Alternate Webpage(s) | http://www2.ca.uky.edu/wkrec/RedDrumGrowth.PDF |
| Alternate Webpage(s) | https://doi.org/10.1111/j.1749-7345.1993.tb00174.x |
| Volume Number | 24 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
