The results indicated that no significant difference of total haemocytes count was observed at different pH water levels (pH , , , ) at 0 - 72 hpc (hour post challenge). At 96 hpc, total haemocytes count at high pH water level () was increased and significant difference in comparison with the total haemocytes count recorded in low pH water levels (, , ). | Effects of water pH on susceptibility of whiteleg shrimp Litopenaeus vannamei to acute hepatopancreatic necrosis disease Vibrio parahaemolyticus
