3.4. Respiratory burst activity
The results of RBA are presented in Table 3. The respiratory burst
activity of head kidney macrophages was significantly higher
(P < 0.05) in treatment groups at both points of time (Table 3). After
30 days of feeding, highest RBA activity was observed in fish group
fed the diet containing 1010 cfu g1 VSG3. However, fish fed the diet
containing 108 cfu g1 VSG3 exhibited the highest RBA activity at
the end of feeding trial.