Table 2.

Effects of weaning age on growth performance of nursery pigs fed diets with increasing levels of whey permeate at 7 to 11 kg BW

Weaning age	21 da				25 db					P value
Whey permeatec, %	7.50	11.25	15.00	18.75	7.50	11.25	15.00	18.75	SEM	Age	Linear	Log-Linear	Age x Linear
BW, kg
d 0	7.4	7.4	7.4	7.4	7.1	7.1	7.1	7.1	0.3	0.189	0.989	0.990	0.994
d 10	11.1	11.2	11.3	11.6	10.4	10.5	10.7	10.7	0.4	0.020	0.320	0.329	0.852
ADG, g/d	371	379	394	422	328	342	357	360	15	< 0.001	0.005	0.014	0.567
ADFI, g/d	508	513	515	531	404	415	421	426	16	< 0.001	0.174	0.401	0.994
G:F	0.73	0.74	0.76	0.80	0.81	0.83	0.85	0.85	0.02	< 0.001	0.002	0.014	0.352
Mortality, %	0.0	0.5	0.0	0.5	0.0	1.0	0.5	0.5	0.5	0.425	0.535	0.574	0.999
Fecal scorec	3.31	3.56	3.66	3.23	3.60	3.39	3.27	3.32	0.2	0.770	0.446	0.763	0.576

^aPigs were weaned at 21.2 ± 1.3 d of age and fed a common diet for 11 d until pigs reach 7 kg BW

^bPigs were weaned at 24.6 ± 1.1 d of age and fed a common diet for 2 d until pigs reach 7 kg BW

^cDietary treatments were supplemental levels of whey permeate in the diets (Agri-Mark, Inc., Middlebury, Vermont, USA)