摘要：This study was conducted to evaluate the digestibility of biofloc meal collected from catfish culture as a feed
raw material for Pacific white shrimp Litopenaeus vannamei diet. A basal feed with 43% crude protein content
was used as a control diet and mixed with 2% of binders and 0.5 % of Cr2O3 as a marker for digestibility. The
experimental diets were made by mixing 67.5% of the basal diet with 30% of biofloc meal, 2% of binders and
0.5 % of Cr2O3. Nine units of glass tanks (90 cm×40 cm×35 cm) filled with 100 L seawater were used as the
experimental culture units. White shrimp with an average body weight of 5.61 ± 0.09 g was randomly distributed
to each experimental tank at a density of 20 shrimp/tank. The feed was offered at a level of 5% shrimp biomass per
day at a frequency of four times a day. The results showed that the dry matter digestibility of feed with 30% biofloc
meal in shrimp were similar to that of the reference diet. However, protein and fat digestibility of feed containing
biofloc meal were considerably higher than those of the reference diet. Feeding shrimp with 30% biofloc meal diet
resulted in higher survival and specific growth rate and lower feed conversion ratio than those of the control. The
digestibility of bioflocs dry matter, protein and lipid in Pacific white shrimp obtained in this study were 54.9%,
76.3% and 79.3%, respectively.
