Table 4.

Redox status in the liver of turkey poults fed diets with supplemental methionine.¹

		Supplemental DL-Met, %	Supplemental L-Met, %
Item	BD2	0.33	0.33	SEM	P value
Malondiadehyde, nmol/mg protein
d 7	1.31	1.33	1.44	0.09	0.16
d 28	1.32A	1.27A,B	1.16B	0.05	0.094
Protein carbonyl, nmol/mg protein
d 7	2.18	1.98	2.38	0.37	0.63
d 28	4.09A	3.00B	2.84B	0.36	0.065
Total antioxidant capacity, U/mg protein3
d 7	2179	2101	2014	138	0.68
d 28	1967	1883	2094	141	0.51
Glutathione, nmol/mg protein
d 7	2.80B	3.21A,B	3.45A	0.201	0.092
d 28	2.70	2.70	2.44	0.160	0.41

^A,BMeans within a row with different superscripts tend to differ (0.05 ≤ P < 0.10).

¹n = 12.

²BD = basal diet.

³Unit (U) represents 1 umol/L copper reducing equivalents per mg of protein in hepatic mucosa.