Table 3.

Exploratory factor analysis (varimax rotation) with correlation coefficients for growth performance, feeding behavior, and plasma response of finishing pigs^a

Variable	Factor 1: feeding behavior	Factor 2: plasma Thr	Factor 3: LD	Factor 4: PD	Factor 5: FI rate	Communality
Average BW	0.10	−0.08	0.70	−0.36	0.04	0.63
PD, g/d	0.11	−0.16	−0.07	0.93	−0.14	0.94
LD, g/d	−0.04	0.01	0.86	−0.16	0.25	0.83
G:F efficiency	−0.18	0.11	−0.13	0.85	0.14	0.81
Lysine intake	−0.02	−0.45	0.74	0.20	−0.18	0.82
Threonine intake	−0.02	−0.85	0.38	0.14	−0.12	0.90
Threonine efficiency of utilization	0.05	0.73	−0.28	0.54	0.06	0.91
FI rate	0.11	−0.14	0.04	0.00	−0.82	0.70
FI per meal	0.96	−0.08	0.19	0.00	−0.05	0.97
Number of meals	−0.92	−0.05	0.12	0.01	0.11	0.88
Time interval between meals	0.94	−0.01	−0.13	−0.08	−0.07	0.92
Plasma threonine	0.07	−0.88	−0.12	0.02	0.16	0.81
Plasma urea	0.12	−0.32	0.26	0.02	0.60	0.54
Varianceb	3.62	2.39	2.19	2.11	1.27	11.58
Proportionc	0.26	0.17	0.16	0.15	0.09	0.83

FI, feed intake; PD, protein deposition; LD, lipid deposition.

^aLoadings were assumed to be significant above 0.6.

^bThe variability (eingenvalue) in the data explained by each factor.

^cProportion of variability in the data explained by each factor (ranging from 0 to 1).