Effects of protein and lipid content of three artificial foods on survival and growth of common dentex during the on-growing phase (Dentex dentex Linneaus, 1758)
Journal Title: Journal of Research in Biology - Year 2011, Vol 1, Issue 4
Abstract
The purpose of this work is to highlight the effects of three different foods containing protein and lipids on the survival and growth of common dentex during the on-growing phase. Common dentex fingerlings weighting 5-6g were grown for one year in polyester tanks. Three diets were used (A1, A2 and A3), respectively, had a protein content of 55%, 45%, 33% and lipid level of 10%, 15% 23%. At the end of the experiment, fishes have reached a weight of 310.20 ± 7.76, 406.24 ± 11.01, 230.20 ± 6.41g, respectively, for A1, A2 and A3. The respective survivals were of 60%, 80% and 88%. The specific growth rates were of 1.04, 1.13 and 1.04 while the respective food conversion rates were of 1.45, 1.30 and 2.0. Diet containing 45% protein and 15% lipid gave the highest specific growth rate and the lowest food conversion rate with an intermediate survival of 80%. Results obtained during this phase are encouraged to undertake large-scale farming in sea cages, knowing that to transfer the fries into cages must have a weight greater than 6g. This study showed that during one year common dentex reached commercial size despite a thermal profile whose values have not reached the optimum temperatures for the majority of sparidae
Authors and Affiliations
Ali Ait Ali, Azeddine Abrehouch, Kamal Chebbaki
Keywords
Related Articles
- EP ID EP561455
- DOI -
- Views 70
- Downloads 0
Remediation of crude oil polluted soil in Otuogidi town in Bayelsa State of Nigeria using poultry manure
Remediation by poultry manure (RPM) is a farming treatment technology, which relies on biological processes to cleanup pollution in soil. In this study, remediation by poultry manure was employed on oil contaminated site...
Biochemical investigation - diagnostic tools of multiple myeloma
In this study biochemical technique was used as supportive tool for early diagnosis of multiple myeloma suspected cases. Samples of suspected cases were collected from histopathological diagnostic center. Serum calcium,...
Studies on the insecticidal properties of Chromolaena odorata (Asteraceae) against the life cycle of the mosquito, Aedes aegypti (Diptera: culicidae)
Leaf extract of the species, Chromolaena odorata was evaluated for the egg hatchability, larvicidal and pupicidal activity of mosquito, Aedes aegypti under the room temperature in the laboratory. Dosage value as expresse...
A Checklist of Butterflies of Meenachil River Basin, Kerala, India
Butterflies are highly sensitive to environmental change and are delicate creatures that act as good bio-indicators of the health of an ecosystem. Meenachil river basin has attracted considerable amount of public interes...
Effect of some abiotic factors on the growth of Oreochromis niloticus Linnaeus, 1758 (Perciformes: Cichlidae) in tropical ecosystems (Cameroon)
The Growth of Oreochromis niloticus (2.6g initial average size) was studied in 100m2 earthen ponds for 180 days under tropical field environment. Varying fertilizing regimes consisting of Pennisetum purpureum (PP) and Mu...