Table 5.

Total antioxidant capacity (TAC) of birds after supplementing MSM in feed with either fresh or oxidized oil.¹

Item	Plasma2			Liver2
	Day 7	Day 14	Day 21	Day 7	Day 14	Day 21
Interaction
Fresh oil
No MSM	2.54	3.24	2.97	6.74	6.69	6.81
MSM	2.89	3.22	3.61	5.90	6.72	6.87
Oxidized oil
No MSM	3.14	2.26	4.03	7.50	7.07	10.42
MSM	3.60	2.42	4.17	6.04	6.62	10.19
SEM	0.182	0.211	0.316	0.695	0.867	0.600
Main effect
Oil
Fresh	2.72a	3.23b	3.29a	6.32	6.71	6.84a
Oxidized	3.67b	2.34a	4.10b	6.77	6.84	10.31b
SEM	0.126	0.151	0.205	0.496	0.585	0.428
MSM
No	2.84a	2.74	3.50	7.12	6.88	8.62
Yes	3.24b	2.81	3.89	5.97	6.67	8.53
SEM	0.122	0.151	0.205	0.496	0.585	0.428
P-values
Cohort	0.11	<0.001	0.005	0.011	0.81	0.003
Rep (cohort)	0.005	0.47	0.71	0.72	0.84	0.049
Oil	0.006	0.002	0.002	0.51	0.85	<0.001
MSM	0.023	0.73	0.16	0.10	0.78	0.88
Oil × MSM	0.73	0.67	0.36	0.66	0.75	0.81

Abbreviation: MSM, methylsulfonylmethane.

^a,bMeans lacking a common superscript letter in a column differ (P < 0.05).

¹Least square means derived from 11 replicates total (4 and 7 reps in cohort 1 and 2 respectively; n = 11) initially containing 12 birds per cage. All birds received their assigned diets from study days 0 to 21. Time points reflects day of study.MSM was fed at 0 or 0.05% with 5% of either fresh or oxidized oil.

²Values expressed as millimole of trolox equivalence per gram of wet tissue or liter of plasma.