Effects of Dietary Protein-to-Energy Ratios on Growth, Immune Response, Antioxidative Capacity, Liver and Intestinal Histology, and Growth-Related Gene Expression in Hybrid Yellow Catfish (Pelteobagrus fulvidraco × Pelteobagrus vachelli )

Table 6

Plasma oxidative & immunological status of hybrid yellow catfish fed different dietary P/E ratios for 7 weeks.

P/E ratio mg/kcal	LZM^1 (ng/ml)	IgM^2 (ug/ml)	SOD^3 (ng/ml)	CAT^4 (U/ml)
84	^a	^a	^ab	^b
88	^ab	^ab	^ab	^b
90	^ab	^ab	^cd	^bc
93	^b	^b	^bc	^b
95	^b	^b	^d	^c
96	^ab	^ab	^a	^a
99	^b	6^ab	^b	^b
103	^ab	^ab	^a	^a

Values are of three replications. Values in the same line with superscripts are significantly different (). LZM¹: lysozyme; IgM²: immunoglobulin; SOD³: superoxide dismutase; CAT⁴: catalase.