Research Article

**Effects of Different Macroalgaediets on Growth Performance on Impatient Sea Cucumber Holothuria impatiens Forskaal, 1775 (Echinodermata: Holothuroidea)**

Objective: This experimental work was aimed to study the effect of different ration of some different local macroalgae species diets on the significant growth rate and the survival rate of H. impatient juveniles to provide a preview for the large-scale sea cucumber aquaculture. Materials and Methods: A three natural seaweeds diets Caulerpa racemosa (green algae), Cystoseira indica (brown algae) and Jania rubens (red algae) were used as a powder (1, 2 and 3% of their initial body weight)to feed sea cucumber juveniles Holothuria impatiens. Growth performance of H. impatiens was calculated for 12 weeks to identify the optimal diet for this species. There was no significant difference between sea cucumber juvenile's weights at the beginning of the experiments. Data (Mean±SE) were analyzed with a one-way ANOVA. The SPSS version 18.0 for Windows was used. Results: Sea cucumbers fed on C. indica diets, showed SGRs were significantly higher than those fed C. racemosa and J. rubens diets (F = 25.5, p<0.05). Sea cucumbers fed 2 and 3% powdered seaweeds C. indica (0.5% day‾¹) obtained the best growth than the other treatments (p<0.05). The ingestion rate was higher when fed the C. racemosa and C. indica diet than when fed the J. rubens diet (p<0.01). Ammonia-nitrogen production was much lower in H. impatiens fed the C. indica and C. racemosa diet than when fed in J. rubens diets. No mortalities were found in sea cucumber juvenile for 12 weeks. Conclusion: This study concluded that C. indica was optimum seaweeds for use in the culture of the seacucumber H. impatiens then C. racemosa seaweeds but the J. rubens seaweeds were the worst.

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Mostafa Ahmed Mohamed Mahmoud, Mahmoud Ibrahim El-Saman and Esameldin Ali Babeker, 2017. Effects of Different Macroalgaediets on Growth Performance on Impatient Sea Cucumber Holothuria impatiens Forskaal, 1775 (Echinodermata: Holothuroidea). Journal of Fisheries and Aquatic Science, 12: 177-183.

DOI: 10.3923/jfas.2017.177.183

URL: https://scialert.net/abstract/?doi=jfas.2017.177.183

Journal of Fisheries and Aquatic Science

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Authors

Mostafa Ahmed Mohamed Mahmoud

Mahmoud Ibrahim El-Saman

Esameldin Ali Babeker

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Research Article

**Effects of Different Macroalgaediets on Growth Performance on Impatient Sea Cucumber Holothuria impatiens Forskaal, 1775 (Echinodermata: Holothuroidea)**

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