However, replacing 40% PBM instead of fish meal is the optimum level in terms of keeping both fish survival and fish welfare in the best levels. Results clearly demonstrated that, replacement of fish meal with PBM up to 60% of Seabass diets is acceptable. coli in fish carcass and rearing water were less than control. Protein and lipid content in fish carcass increased in PBM diets. FCR, PER, PPV, EU values revealed that replacing fish meal with PBM did not negatively affect the efficiency of feed utilization and the best results were obtained at 60% PBM. Contrary, survival decreased significantly (P < 0.05) at 60% PBM (94%), while other treatments showed no mortalities. However, the best growth rate was obtained at 60% PBM giving the best SGR (3.52%/day). Growth performance results showed a non-significant differences between control and both 20% PBM and 40%PBM. Results of survival, growth, feed utilization, carcass composition and microbial load were evaluated. Fish were fed at 10% BW/day through three meals and gradually decreased to 6% during the last week of experiment that continued for 70 days.

Fish fry (0.73 gm/pceIW) were stocked in 12 fiberglass tanks at density of 25 fry/m3.

In these diets, fish meal was replaced with PBM at levels 0, 20, 40, and 60%. Four diets were formulated to contain 48% protein, 14% lipid and 4.8 kcal/g. Replacement of fishmeal with poultry by-product meal (PBM) on an ideal isonitrogenous/isocaloric diets for seabass was evaluated.

Golden pompano farming