Dietary Thymol Improved Growth, Body Composition, Digestive Enzyme Activities, Hematology, Immunity, Antioxidant Defense, and Resistance to Streptococcus iniae in the Rainbow Trout (Oncorhynchus mykiss)

Table 6

The immune components of blood and mucus () in rainbow trout, Oncorhynchus mykiss () over 60 days feeding with dietary levels of thymol (TYM). For each parameter, the differences between the means are indicated as different superscripted letters ().

	Thymol concentrations (g/kg diet)					values
	Nonsupplemented	1	1.5	2	2.5
Plasma immune components
Lysozyme activity (IU/ml)	^a	^ab	^b	^c	^c	0.011
C3 activity (IU/ml)	^a	^a	^ab	^b	^b	0.021
Ig (mg/ml)	^a	^a	^b	^b	^b	0.03
Bactericidal activity (No. of. CFUs)	^a	^a	^b	^b	^b	0.01
Total protein (g/dl)	^a	^b	^b	^c	^c	0.013
Mucosal immune components
Lysozyme activity (IU/ml)	^a	^a	^b	^b	^c	0.02
Ig (mg/dl)	^a	^a	^b	^b	^c	0.014
Protease activity (IU/ml)	^a	^ab	^bc	^bc	^c	0.01
Alkaline phosphatase activity (IU/ml)	^a	^a	^b	^c	^d	0.022

C3: complement C3, Ig: total immunoglobulin.