Table 6.

Residual correlations of performance variables, endotoxin permeability, serum acute phase proteins and alkaline phosphatase in gilts divergently selected for residual feed intake¹

	ADFI2	ADG2	G:F	RFI Index3	Serum endotoxin2	Serum Haptoglobin2	Serum CRP2	Serum LBP2	Ileum Endotoxin permeability2	Ileum ALP2	Ileum Lysozyme2
ADFI2	1.00	0.35	-0.58	0.65	0.57	0.45	0.28	0.02	0.50	-0.45	-0.21
		0.003	0.003	0.0008	0.003	0.14	0.19	0.92	0.10	0.14	0.49
ADG2		1.00	0.55	0.02	0.14	-0.49	-0.24	0.14	-0.29	0.28	0.40
			0.006	0.92	0.52	0.11	0.25	0.51	0.35	0.38	0.20
G:F			1.00	-0.55	-0.40	-0.59	-0.47	0.08	-0.47	0.47	0.34
				0.007	0.052	0.042	0.019	0.72	0.13	0.12	0.27
RFI Index3				1.00	0.34	0.34	0.20	-0.01	0.57	-0.43	-0.26
					0.13	0.27	0.36	0.95	0.052	0.17	0.41
Serum endotoxin2					1.00	0.66	0.13	-0.04	0.66	-0.63	-0.43
						0.019	0.53	0.84	0.019	0.027	0.16
Serum Haptoglobin2						1.00	0.35	0.02	0.47	-0.18	-0.39
							0.26	0.95	0.12	0.57	0.21
Serum CRP2							1.00	0.12	-0.17	0.01	0.12
								0.57	0.60	0.96	0.57
Serum LBP2								1.00	-0.36	-0.28	-0.32
									0.24	0.37	0.31
Ileum Endotoxin permeability2									1.00	-0.40	-0.49
										0.19	0.11
Ileum ALP2										1.00	0.25
											0.43
Ileum Lysozyme2											1.00

¹Upper row = residual correlations. Bottom row = P-values.

²ADFI = kg/d; ADG = kg/d; Serum endotoxin = EU/mL; Serum haptoglobin = mg/mL; Serum C-reactive protein (CRP) = ng/mL; Serum lipopolysaccharide binding protein (LBP) = ng/mL; Ileum endotoxin permeability = Papp; Ileum alkaline phosphatase (ALP) = mU/mg; Ileum lysozyme = U/mg.

³Residual feed intake (RFI) = ADFI-β₁(ontest BW deviation)+β₂(offtest BW deviation)+β₃(metabolic mid-BW)+β₄(ADG)+β_{5(offtest backfat)}