A Study on the Fatty Acid Enrichment of Artemia franciscana for the Healthy Rearing of Penaeus vannamei Post-larvae

Abstract

Background: The study aimed to investigate the growth performance of Penaeus vannamei PL through the supplementation of fatty acid enriched Artemia franciscana.Methods: The animals were stocked at 3000PL/m3 in triplicates. The experimental diet (100nauplii/PL/day) fed initially for 7days include Artemia franciscana (unenriched) as control and Fatty acid (0.5%, 1%, 2% and 3 %) enriched nauplii as treatments (T1, T2, T3 and T4) and later switched to commercial diet for 18 days.Result: No significant difference in water quality parameters between the experimental groups was observed. Highest weight gain percentage and survival was found in T3. Fatty acid profile of Artemia franciscana and shrimp at day 7 and 25 were analysed. Higher W-6 fatty acid accumulation was found in shrimp on day 7. Histological analysis of muscles, hepatopancreas and intestine showed different fatty acids levels reflected structural changes in epithelial cells. The current study revealed that Artemia franciscana enriched with 2% fatty acid emulsion can be used as an optimum level to improve the zootechnical performance of P. Vannamei.

Effects of Microalgae Chlorella vulgaris Density on the Larval Performances of Fresh Water Prawn Macrobrachium rosenbergii (De Man, 1879)

“…In addition, larvae may be benefited from the indirect nutrition by the supplementation of live Artemia that depends microalgae as their food source. Even though Artemia is considered as the best live feed for the larvae of many crustacean species lacks several essential nutrient components (like HUFA, DHA and EPA) in it may limit the survival and growth of crustacean and fish larvae (Léger et al 1986;Felix et al 2020). C. vulgaris contains valuable source of LC-PUFAs with presence of ARA, DHA and EPA (Pakravan et al 2017;Maliwat et al 2017) that possibly enhanced the nutritional profile of Artemia.…”