Lysozyme is an important component in the immune system of
fish. It is bactericidal by hydrolysing bacterial cell wall peptidoglycans
resulting in bacteriolysis. It is also known to act as opsonin
[25]. In the present study, enhanced serum lysozyme activity
(P < 0.05) was recorded in all the treatment groups throughout the
study period. Similar results of elevated lysozyme activity were
observed in E. bruneus [8] and Epinephelus coioides [13] after 2 and 4
weeks of dietary administration of Lactobacillus enriched diet,
respectively. Also, Panigrahi et al. [32] noted a significantly higher
serum lysozyme activity in Oncorhynchus mykiss fed with Lactobacillus
rhamnosus JCM 1136. In contrast, lysozyme activity in