Utilization of Pretreated Jack Bean (Canavalia ensiformis) as Raw Material for Tilapia (Oreochromis sp.) Feed | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Volume 29, Issue 5, September and October 2025, Pages 213-234 PDF (412.89 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2025.366235.5678 | ||
| Authors | ||
| Azizi Putri Nurilita Hidayat1; Ichsan Achmad Fauzi* 2; Mia Setiawati1; Julie Ekasari1 | ||
| 1Department of Aquaculture, Faculty of Fisheries and Marine Sciences, IPB University, Bogor, Indonesia | ||
| 2Department of Aquaculture, Faculty of Fisheries and Marine Sciences, IPB University | ||
| Abstract | ||
| Tilapia (Oreochromis sp.) production has increased so that it must be supported by the fulfillment of nutrients through feed. Jack bean (Canavalia ensiformis) is one of the potential legumes with high nutrient content but its utilization is limited due to the presence of antinutritional factors such as phytic acid, trypsin inhibitor, and tannin. Thus this research is aimed to evaluate the effect of pretreatment of jack bean meal upon fed to tilapias. The peeled jack bean were pre-treated by soaking (6 hours; 1:10 w/v ratio), and autoclaving (30 minutes at 121℃). Proximate composition of the jack beans showed increase in protein and fat content from the soaking and autoclaving process. All of the antinutrient factors demonstrated decreased value upon pre-treatment process. For the fifteen fingerlings of tilapia (8,19±0,01 g) were stocked in 20 aquarium measuring 50 x 50 x 40 cm3 for 60 days, labeled in triplicate according to five isonitrogenous diets (28 % CP) formulated using the processed and unprocessed jack bean seed at an inclusion level of 0, 5, and 15 %. Chromium oxide (Cr2O3) was added as a feed digestibility test indicator. Afterward, faecal and blood were collected and fish samples were examined for growth performance, digestive enzyme activity, and histology of the inner intestinal wall. The highest total feed digestibility (51,71 %), final biomass (571 g), specific growth rate (2,56 %), feed conversion ratio (1,69), plasma protein (4,51 g dL-1), and protein retention (32,27 %) were observed at inclusion 5 % processed jack bean. These results indicate that processed jack bean can be used in tilapia feed at a dose 5 %. | ||
| Keywords | ||
| Antinutrients; Digestibility; Growth; Jack bean; Pretreatment; Tilapia | ||
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