Apparent digestibility coefficients of selected protein ingredients for juvenile <i>Totoaba macdonaldi</i>

Abstract Two feeding trials were performed to evaluate the apparent digestibility coefficients (ADCs) of dry matter, protein, and amino acids three animal‐origin four plant‐origin ingredients in Totoaba macdonaldi . In first trial, evaluated using totoaba juveniles with an initial weight 529.7 ± 104.2 g, for second trial 745.9 210.6 g. Evaluated were: poultry by‐product meal, meat bone feather meal (FM), soy protein concentrate, soybean (SBM), corn gluten (CG), wheat (WG). Each experimental ingredient was triplicate. ADCs matter ranged from 35.9% FM 67.9% by‐product, while values 41.7% CG 83.2% by‐product. Fish ADC (79.6%) similar but significantly higher than WG concentrate (72.5% 72.6%, respectively). The lysine WG, sardine SMB (94.5%, 79.8%, 79.4%, Based on results present study, are most promising alternative (i.e., fishmeal) formulation grow‐out feeds.