Early weaning of yellowtail amberjack Seriola lalandi dorsalis (Gill 1863) larvae
Journal Title: Journal of Coastal Life Medicine - Year 2017, Vol 5, Issue 5
Abstract
Objective: To understand the effect of weaning time on the rearing performance of yellowtail amberjack Seriola lalandi dorsalis in the experimental condition. Methods: The same weaning protocol started on four different days of post hatching (DPH), including 12 DPH (W12), 15 DPH (W15), 18 DPH (W18), and 21 DPH (W21), respectively. Growth, survival, and jaw malformation were used as the assessment criteria to evaluate the impact of weaning time on the performance of yellowtail amberjack larvae. Results: The highest specific growth rate was observed in W21 treatment, and the lowest specific growth rate was found in W12 treatment. The highest survival was achieved in W21 treatment, and the lowest survival was recorded in W12 treatment. With postponing the weaning started time, jaw malformation rate significantly reduced. At the end of this study, the highest malformation rate was observed in W12 treatment, and the malformation rate was not significantly different in W15, W18, and W21 treatment. Conclusions: Base on the results obtained in this study, we suggest that weaning of yellowtail amberjack larvae should be started from 15 DPH.
Subchronic oral toxicity evaluation of ethanolic whole plant extract of Eleucine indica on haematological and biochemical indices in Wistar albino rats
Objective: To evaluate the effect of ingestion of ethanolic whole plant extract of Eleucine indica on haematological and biochemical parameters of Wistar albino rats. Methods: Subchronic toxicity study was carried out by...
Stress-preventing effects of the anaesthetic agents 2-phenoxyethanol, MS-222, clove oil and metomidate in the Senegalese sole Solea senegalensis
Objective: To determine the effectiveness of the anaesthetic agents 2-phenoxyethanol, MS- 222, clove oil and metomidate in attenuating acute handling stress in juvenile specimens of Solea senegalensis subjected to two ro...
Marine bacterial extracellular polysaccharides: A review
Marine ecosystems are of great importance to humans since evolution. Conventionally, polysaccharides were isolated from plants, algae, etc. As science advanced, various sources of exopolysaccharides have been found. Exop...
Effiacy of oxytetracycline and potentiated sulphonamide oral therapies against Aeromonas hydrophila infection in Nile tilapia Oreochromis niloticus
Objective: To assess the efficacy of feeds containing approved antibiotics, viz., oxytetracycline (OTC) or potentiated sulphonamide [(sulphamethoxazole-trimethoprim) SMZ-TMP] at 1 g, 2 g, 3 g and 4 g of respective antibi...
Variability in patterns of macro-epiphytic leaf community of Posidonia oceanica in the Islands of Kuriate: Western coast of Tunisia
Objective: To test the response of the epiphyte community structure and biomass of the Posidonia oceanica (P. oceanica) leaves to natural disturbance. Methods: Sampling of P. oceanica was carried in winter and summer on...