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Supplementation of an Immunomodulator, Ergosan in Early Larvae Rearing of Indian White Prawn, Fenneropenaeus indicus


Affiliations
1 Department of Marine Biology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
2 National Aquaculture Group, Al Lith 21961, Saudi Arabia
 

Efficacy of an algine-based immunomodulator, Ergosan was tested on growth and survival of early larval stages (nauplii – PL3) of Indian white shrimp, Fenneropenaeus indicus in fibreglass tanks (10,000 l) for two larval rearing cycles. Larvae fed on a diet with Ergosan were considered as treatment and those fed on a diet without Ergosan as control. Both control and treatments were replicated in five tanks and arranged in a completely randomized design. Significant difference (P < 0.01) in survival was observed between control and treatment. However, growth of larvae was not influenced by the supplementation of Ergosan. Total colony forming units, yellow, green Vibrio and luminescent bacterial colonies were found to be significantly decreased in treatment tanks. Thus Ergosan was found to be a safe immunomodulator for improving larval survival and reducing bacterial load in rearing water.

Keywords

Bacterial Colonies, Immunomodulator, Larval Rearing, Supplementation, White Shrimp.
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  • Supplementation of an Immunomodulator, Ergosan in Early Larvae Rearing of Indian White Prawn, Fenneropenaeus indicus

Abstract Views: 296  |  PDF Views: 72

Authors

Sambhu Chithambaran
Department of Marine Biology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Nasser K. Ayaril
National Aquaculture Group, Al Lith 21961, Saudi Arabia

Abstract


Efficacy of an algine-based immunomodulator, Ergosan was tested on growth and survival of early larval stages (nauplii – PL3) of Indian white shrimp, Fenneropenaeus indicus in fibreglass tanks (10,000 l) for two larval rearing cycles. Larvae fed on a diet with Ergosan were considered as treatment and those fed on a diet without Ergosan as control. Both control and treatments were replicated in five tanks and arranged in a completely randomized design. Significant difference (P < 0.01) in survival was observed between control and treatment. However, growth of larvae was not influenced by the supplementation of Ergosan. Total colony forming units, yellow, green Vibrio and luminescent bacterial colonies were found to be significantly decreased in treatment tanks. Thus Ergosan was found to be a safe immunomodulator for improving larval survival and reducing bacterial load in rearing water.

Keywords


Bacterial Colonies, Immunomodulator, Larval Rearing, Supplementation, White Shrimp.

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DOI: https://doi.org/10.18520/cs%2Fv114%2Fi08%2F1760-1762