Table 4.

Correlation coefficients (r) between yellow catfish skin yellowness (b*-values) and skin lutein and oxidative stress response.

	Yellowness (b*)-Values
	Abdominal Skin	Dorsal Skin
Dorsal skin lutein content	0.82 *	0.87 *
Abdominal skin lutein content	0.90 **	0.67 *
Plasma LD content	−0.59 *	−0.66 *
Liver sod relative mRNA level	0.76	0.95 *
Liver gr relative mRNA level	0.91	0.99 **
Kidney gpx relative mRNA level	0.96 *	0.99
Kidney gr relative mRNA level	0.80	0.98 *

* p < 0.05; ** p < 0.01.