Effectiveness of Putak Starch Flour as an Energy Source for the Growth of Siamese Catfish (Pangasius hypophthalmus) | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 162, Volume 29, Issue 4, July and August 2025, Page 4965-4975 PDF (448.81 K) | ||||
| DOI: 10.21608/ejabf.2025.446727 | ||||
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| Author | ||||
| Nalle et al. | ||||
| Abstract | ||||
| The high cost of feed in Siamese catfish (Pangasius hypophthalmus) aquaculture encourages the exploration of alternative energy sources based on local raw materials. Putak starch flour, extracted from the pith of the gebang palm (Corypha gebanga), is a potential carbohydrate source with abundant availability in Indonesia, yet its utilization remains suboptimal. This study aimed to evaluate the effectiveness and determine the optimal inclusion level of putak starch flour as an energy source in feed on the growth performance of Siamese catfish. The study used an experimental method with a completely randomized design (CRD) consisting of five feed treatments with five replicates. The treatments were a commercial feed as a control (P0) and four levels of carbohydrate substitution with putak starch flour: 25% (P1), 30% (P2), 35% (P3), and 40% (P4). Test fish specimens, with an initial average weight of 6.88±0.99g, were cultured for 60 days. The results showed that the substitution of putak starch flour had a highly significant effect (P< 0.05) on absolute growth, specific growth rate (SGR), and feed conversion ratio (FCR), but no significant effect (P> 0.05) was detected on the survival rate. The highest growth performance was achieved by the P0 control treatment (absolute growth 107.29±17.26g; SGR 2.45±0.24 g%/day; FCR 0.90±0.10). Increasing the level of putak starch flour above 30% significantly decreased growth performance and feed efficiency, with the FCR increasing to 1.95±0.35 in the P4 treatment. The survival rate was high across all treatments, ranging from 80-96%. It was concluded that putak starch flour has the potential to be used as an alternative energy source in Siamese catfish feed, with a recommended maximum inclusion level of 30% to maintain optimal growth performance and feed efficiency. | ||||
| Keywords | ||||
| Pangasius hypophthalmus; Alternative feed; Putak starch flour; Growth performance; Feed conversion ratio | ||||
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