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Objective: To evaluate juvenile tilapia (O. niloticus) growth fed with different inclusion levels of ordinary cricket flour (A. domesticus).
Design/methodology/approach: The juveniles (2.16±0.46 g) were placed in 60 L semicircular tanks with 15 fish per tank, and fed at 5% of their biomass in 5 daily rations (08:00; 10:00; 12:00; 14:00, and 16:00 hrs.) for 45 days; temperature (28 ± 2 ºC), oxygen concentration (7.2 ± 1 mg/L) and pH (7.02 ± 0.1) were constant. Five treatments were tested: T1-0%, T2-25%, T3-50%, T4-75%, and T5-100%, respectively, with biweekly biometrics. Growth parameters were determined using the biometric data.
Results: Results suggest that AWG, SGR, and PER were higher in T2 but without significant differences with T3; the highest FE was presented in T2 and T3, and the lowest FC, PC, and FCR were found in T3.
Limitations on study/implications: Using insects with sustainable and healthy production can be a viable response to the shortage of fishmeal in aquaculture. However, its use can cause a decrease in palatability and digestibility and a nutritional imbalance in the fish.
Findings/conclusions: Inclusions of 50% showed better growth levels with more vigorous and reactive fish, while higher inclusions affected the growth of O. niloticus.