Table 4.

Blood metabolites of cattle divergent for RFI

Variable	RFIc			Gd			Day			P-value
	High	Low	SDe	Bulls	Heifers	SD	1	72	SD	RFI	Gender	Day	RFI× G	Day × G	RFI × Day
No. of animals	17	17	–	18	16	–	34	34	–	–	–	–		–	–
BHBa, nmol/L	0.18	0.22	0.03	0.15	0.25	0.03	0.18	0.21	0.01	0.18	0.017	0.13	0.22	0.06	0.97
Albumin, g/L	34.7	33.7	0.9	32.5	35.9	1.06	31.7	36.7	0.3	0.32	0.006	< 0.0001	0.59	0.86	0.56
Creating umil/L	117.6	118.35	5.7	116.19	119.71	6	110.25	125.75	1.72	0.9	0.56	< 0.0001	0.45	0.7	0.37
Globulin, g/L	40.6	38.5	2.1	40.4	38.7	1.6	38.6	40.5	1.9	0.3	0.4	0.01	0.8	0.5	0.26
Glucose, nmlo/L	4.7	4.8	0.11	4.9	4.6	2	4.5	5	0.11	0.53	0.09	0.0005	0.36	0.17	0.99
NEFAb, nmol/L	0.08	0.04	0.017	0.02	0.09	0.018	0.06	0.06	0.006	0.05	0.002	0.18	0.77	0.21	0.35
Total Protein, g/L	75.4	72.2	2.3	73	74.6	2.5	70.3	77.3	0.85	0.2	0.51	< 0.0001	0.73	0.53	0.24
Triglycerides, nmol/L	0.16	0.17	0.03	0.17	0.15	0.03	0.14	0.19	0.009	0.68	0.67	0.001	0.87	0.48	0.93
Urea, nmo/L	3.9	3.7	0.39	3.4	4.17	0.42	5.1	2.55	0.17	0.71	0.13	< 0.0001	0.07	0.01	0.89

^aBHB Beta-hydroxybutyrate

^bNEFA Non esterified fatty acids

^cRFI Residual feed intake βHB

^dG Gender

^eSD Standard Deviation