Growth Performances of Clarias gariepinus Fry Fed Hermetia illucens Based Diet Supplemented with Synthetic Amino Acids (Methionine and Lysine)

Objective: this study focused on the effect of a local feed supplement with synthetic amino acids (methionine and lysine) on the survival and growth of Clarias gariepinus fry in happas. Study Design: the study took place at the DJOKWE aquaculture farm located in the Cameroon Littoral Region, Moungo Department, Nkongsamba 1st District. Methodology: Six (06) local T0- diets without synthetic amino acid negative control, T0+ coppens imported feed positive control, T1 (L1.5/M1) containing 1.5% lysine and 1% methionine, T2 (L1, 5/M1.5) containing 1.5% lysine and 1.5% methionine, T3 (M1/L2) containing 1% methionine and 2% lysine, T4 (M1/L2.5) containing 1% methionine and 2.5% lysine were tested in triplicate on 540 fry of 10± 3.1g distributed in 18 happas of 0.5 m2. The fish were fed 3 times per day at a rate of 8% of the ichthyo biomass. Every 14 days, zootechnical parameters were evaluated. Results: depending on the level of supplementation, the survival rate was higher for the T0+ coppens treatment, 96.66%, and lower for T4 (M1/L2.5) supplemented with 1% methionine and 2.5% of lysine with 80%. The significantly highest average weight gain (p<0.05) was recorded with the T0+coppens treatment (89.67±1.52g) compared to the T1 (L1.5/M1) and low (66. 33 ±00g) compared to treatment T3 (M1/L2). The specific growth rate was higher (p˃0.05) or (2.83%±0.16g/d) with T2(L1.5/M1.5) and lower (0.78%±0 .02%g/d) for T0+ coppens. As for the condition factor K, it is significantly higher for the T0+coppens treatment (0.46%±0.030) and lower for the T4 treatment (0.29±0.023). Conclusion: the incorporation of 5% of black soldier fly larva into local feed supplemented with 1.5% lysine and 1% methionine makes it possible to improve the survival of Clarias gariepinus fry but also their growth as well as the production cost

Additional file 1: of A survey for potentially zoonotic gastrointestinal parasites in domestic cavies in Cameroon (Central Africa)

Values in the table are the optical densities obtained from the analysis of fecal samples for the presence of Giardia/Cryptosporidium coproantigen. Values A1 and B1 refer to positive control while value H12 refers to negative control. (XLS 20 kb