Table 5.

Energy and lipid digestibility, nitrogen balance, and intestinal permeability in finishing pigs fed various levels of peroxidized soybean oil, experiment 2

	Processed soybean oil1				Statistics
Parameter	22.5	45	90	180	SEM	P-value2
DE, % of GE	90.09	90.53	89.61	90.75	0.46	0.35
ME, % of DE	98.10	98.22	97.99	98.08	0.09	0.35
AEE digestibility, %	83.62	86.15	84.64	85.06	0.87	0.23
Nitrogen digested, %	88.77	88.33	87.16	89.08	0.55	0.12
Nitrogen retained, %2	85.92	87.12	86.14	85.07	0.09	0.40
Urinary L:M ratio3	0.13	0.12	0.12	0.08	0.02	0.35

¹Data are least-square mean of 14 observations for 22.5 and 90; and 13 observations for 45 and 180. Processing temperatures: 22.5 = fresh oil; 45 = oil heated for12 d at 45 °C with constant compressed air flow rate at 15 L/min; 90 = oil heated for 72 h at 90 °C with constant compressed air flow rate at 15 L/min; 180 = oil heated for 6 h at 180 °C with constant compressed air flow rate at 15 L/min. Pigs were fed diets for 21 d with an initial BW of 9.16 ± 1.56 kg (P = 0.48) and a final BW of 12.77 ± 1.69 kg (P = 0.36).

²Nitrogen retained as a percent of N digested.

³Urinary lactulose:mannitol ratio.