Table 3.

Influence of weaning age on finishing performance¹

Item	Weaning age, d				SEM	Probability, P-value <
	19	22	25	28		Linear	Quadratic
BW, kg
Day 0	18.7	20.4	23.4	25.8	0.42	<0.001	0.516
Day 40	53.0	55.2	60.2	63.5	0.64	<0.001	0.354
Day 80	94.7	97.6	105.3	107.1	1.01	<0.001	0.582
Day 94	114.9	117.8	124.7	126.5	1.33	<0.001	0.708
Day 164 of age	125.2	124.4	128.0	126.5	1.53	0.277	0.816
ADG, g
Days 0 to 40	801	811	857	877	14.0	0.001	0.723
Days 41 to 80	1,127	1,145	1.221	1.175	19.6	0.017	0.112
Day 81 to 94	1,444	1,441	1,383	1,385	62.0	0.402	0.968
Days 0 to 94	1,024	1,036	1,077	1,072	45.6	0.001	0.479
Birth to 164 d of age	754	751	774	762	8.9	0.250	0.620
Removals, %	1.5	2.4	1.0	0.0	0.12	0.242	0.400
Mortality, %	0.9	1.0	1.0	1.4	0.12	0.677	0.765
Days in finisher to 135 kg of market weight, d	108.7	106.8	102.2	100.9	2.34	<0.001	0.800

¹A total of 824 pigs weaned at 19, 22, 25 and 28 d of age were used from the nursery to the finishing phase. A total of 10 replication pens (5 pens per sex) per weaning age were used across 40 pens.