Table 3.

Basal, postfeeding cortisol concentrations, and AUC with reference to first partial or full feeding (least squares means)¹

	Treatment
Variable	T12	T23	T34	SEM	P-value
Time 0 (baseline), ng/mL	0.66	0.53	0.76	0.11	0.276
1 hr after feeding, ng/mL	0.69	0.43	0.52	0.13	0.083
3 hr after feeding, ng/mL	0.45ab	0.31a	0.56b	0.06	0.043
5 hr after feeding, ng/mL	0.32	0.20	0.34	0.06	0.128
Total AUC5, ng hr/mL	108.27a	72.73b	102.82ab	13.53	0.030
Total AUC6, ng hr/mL	154.16a	103.07b	156.74a	15.61	0.005

¹Total AUC was calculated using the trapezoidal summation method.

²Sows received their daily gestation ration once at 0730 hours.

³Sows daily gestation ration was split into 2 and each portion offered at 0730 and 1530 hours.

⁴Sows daily gestation ration was split into 3 and each portion offered at 0730, 1130, and 1530 hours.

⁵AUC from time 0 to 3 hr after first partial or full feeding.

⁶AUC from time 0 to 5 hr after first partial or full feeding.

^abLeast squares means within a row uncommon superscript significantly differ (P < 0.05) (Tukey–Kramer adjusted).