Effect of Artemia sp. enriched with fatty acids on the performance of Penaeus vannamei postlarvae

Authors

Melany Dayana Anaguano Quijia Universidad Estatal Península de Santa Elena, Facultad de Ciencias del Mar, Santa Elena, Ecuador.
Yahira Licia Piedrahita Falquez Universidad Estatal Península de Santa Elena, Facultad de Ciencias del Mar, Santa Elena, Ecuador.

Keywords:

Aquaculture , larval nutrition , lipid , carbohydrate , growth , survival

Abstract

The absence of highly unsaturated fatty acids (HUFAs) in the diet of Pacific white shrimp (Penaeus vannamei) alters its development, decreases its immunological capacity, and reduces survival during the initial stages of larval culture, which compromises the bioeconomic efficiency of the system by increasing susceptibility to infectious agents. This study evaluated the effect of providing Artemia sp. enriched with fatty acids (AEAG) on productive and compositional indicators in post-larval Penaeus vannamei. A total of 45 million nauplii were used in 18 experimental units, applying two treatments: (1) feeding with AEAG and (2) Artemia sp. non-enriched (control), during a culture cycle of 18 days. Yield per ton, specific growth rate (SGR), proximal chemical composition, fatty acid profile, and survival rate were calculated. Postlarvae treated with AEAG showed increases in yield (+26.90%), SGR (+13.64%), and survival (+21.40%); together with a biochemical pattern characterized by lower lipid content (–22.19%) and a higher proportion of carbohydrates (+12.02%) and proteins (+1.30%). These findings demonstrate a metabolic optimization associated with increased efficiency in energy use during the larval phase under controlled conditions, thereby improving the production and survival of P. vannamei postlarvae.

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