Table 2.

Skin mucus stress biomarkers of gilthead seabream fed an experimental diet supplemented with a blend of garlic essential oil, carvacrol and thymol, and the control diet devoid of the feed additive (n = 24 per dietary treatment).

	Diet
	Control	Phytogenics
Skin mucus stress biomarkers
Protein (mg/mL)	16.73 ± 2.22	12.86 ± 1.77
Glucose (μg/mL)	13.43 ± 3.95	6.88 ± 1.63*
Lactate (μg/mL)	9.80 ± 2.62	3.62 ± 1.09*
Cortisol (ng/mL)	3.47 ± 0.85	0.35 ± 0.05*
FRAP (μmol/mL)	1,923 ± 244	1,790 ± 315
Skin mucus stress biomarkers ratios
Glucose/Protein (μg/mg)	0.74 ± 0.16	0.60 ± 0.17
Lactate/Protein (μg/mg)	0.46 ± 0.05	0.31 ± 0.12
Glucose/Lactate (mg/mg)	0.69 ± 0.14	0.77 ± 0.15
Cortisol/Protein (ng/g)	208 ± 48.80	31.85 ± 7.03**
FRAP/Protein (μmol/mg)	114 ± 16.9	139 ± 23.1

Asterisks indicate significant differences between experimental diets (*P < 0.05, **P < 0.01; t-test).