Growth Performance and Feed Utilization of Snubnose Pompano (Trachinotus blochii) Fed with Pirenella sp. as a Dietary Supplement
DOI:
https://doi.org/10.61326/actanatsci.v7i1.430Keywords:
Growth, Survival, Trachinotus blochii, Sea snail, Pirenella sp.Abstract
Sustainable aquaculture requires the exploration of alternative, eco-friendly feed sources that can reduce production costs and dependence on commercial feeds. Pirenella sp., a common brackish water snail often considered a pest in aquaculture ponds, has potential as a natural feed ingredient for carnivorous fish species such as the snubnose pompano (Trachinotus blochii). This study assessed the growth performance, survival rate, and feed conversion ratio (FCR) of snubnose pompano fed with Pirenella sp. as a dietary supplement. Nine hapa nets (5 × 5 × 1.5 m) were installed in a brackish water pond and assigned to three treatments with three replicates each: 100% commercial feed (T1), 50% commercial feed + 50% snails (T2), and 100% snails (T3). Results showed that Treatment I achieved the highest growth performance, while Treatment II exhibited comparable outcomes, indicating that partial replacement of commercial feeds with Pirenella sp. did not significantly affect growth. Treatment III, which used only snails, produced markedly lower growth metrics (p<0.05). Survival rate remained at 100% across all treatments (P > 0.05). The lowest FCR (0.34) was recorded in Treatment II, suggesting optimal feed utilization. Although Treatment III had lower growth performance, it was the most cost-efficient due to the natural availability of snails. Overall, the incorporation of Pirenella sp. as a supplemental feed demonstrates potential for enhancing sustainability and reducing feed costs in pompano aquaculture while contributing to the biological control of pest snails in brackish water ponds.
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