Growth of Red Drum,Sciaenops ocellatus, to Maturity on Experimental Diets
| Autor: | John W. Tucker, Daniel E. Roberts, William A. Lellis, Gregory K. Vermeer, Peter N. Woodward |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Journal of Applied Aquaculture. 7:93-108 |
| ISSN: | 1545-0805 1045-4438 |
| Popis: | Red drum, Sciaenops ocellatus, were raised from juveniles averaging 2.5 g to adults averaging 6.1 kg. Growth rates with simple experimental starter and grower feeds were similar to those with one of the best-performing commercial starter feeds for marine fish. Over the size range of 4.3-2,243 g, experimental feed cost per unit of growth gradually increased from $0.88/kg to $ 1.54/kg live weight (1996 prices). Thereafter, feed conversion and cost fluctuated, apparently because of temperature variation and fish maturation. Growth from 4.3 to 4,740 g was accomplished in 27 months with an average feed cost of $1.74/kg growth. Raising the fish beyond 4.7 kg was more costly because of worsening feed conversion. Thus, considering feeding costs, an increase in harvest size of red drum from the usual 1.0-2.0 kg range up to 4.0-5.0 kg seems feasible. |
| Databáze: | OpenAIRE |
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