Pot Marigold (Calendula officinalis) Powder in Rainbow Trout (Oncorhynchus mykiss) Feed: Effects on Growth, Immunity, and Yersinia ruckeri Resistance

Table 4

Serum immunological parameters (, ) of O. mykiss fed with various levels of pot marigold (C. officinalis) powder for 60 days.

Parameter	Different experimental diets
	Control	MP 0.5%	MP 1%	MP 1.5%	MP 2%
LYZ (U/ml)	^c	^bc	^a	^ab	^abc
Total Ig (mg/ml)	^b	^ab	^a	^ab	^ab
C3 (g/dl)	^c	^bc	^ab	^a	^bc
C4 (g/dl)	^c	^c	^ab	^a	^bc
ACH50 (U/ml)
NBT (540 nm)	^c	^bc	^ab	^a	^b
MPO (450 nm)	^b	^ab	^ab	^a	^ab

Different letters in a row denote significant difference ().