Table 2.

Effects of different dietary net energy concentrations on performance of sows and piglets.

Item	Dietary Net Energy Concentration, MJ/kg					SEM	p-Value
	10.05	10.47	10.89	11.30	11.72		ANOVA	Linear	Quadratic
Daily feed intake, kg/d
Lactation d1 to 21	5.18	5.15	4.98	4.30	4.93	0.11	0.082	0.079	0.358
Energy intake, MJ/d
Lactation d1 to 21	52.09	53.92	54.27	48.59	57.82	1.20	0.172	0.455	0.366
Sow backfat thickness, mm
Lactation d0	26.50	27.50	26.83	28.50	28.50	0.47	0.561	0.149	0.934
Lactation d21	21.50	23.67	21.67	21.83	24.67	0.49	0.145	0.181	0.374
Backfat loss d0–21	−5.00	−3.83	−5.17	−6.67	−3.83	0.42	0.191	0.863	0.361
Average weight of piglets, kg
Lactation d0	1.71	1.70	1.58	1.53	1.54	0.05	0.657	0.158	0.789
Lactation d21	6.65	6.46	6.45	6.13	6.56	0.15	0.878	0.661	0.500
ADG of piglets	0.24	0.23	0.23	0.22	0.24	0.05	0.866	0.984	0.472

SEM standard error of the mean.