Table 5.

Main effects of the impact of diet adequacy and super-dosed phytase on nursery pig growth performance, experiment 1¹

	Diet2		Phytase, FTU/kg				P values
Item	PC	NC	0	2,500	SEM	Diet	Phytase	Diet × Phytase
Initial BW, kg	6.26	6.27	6.27	6.26	0.285	0.094	0.693	0.629
Final BW, kg	22.44	21.68	21.89	22.23	0.501	0.002	0.144	0.342
ADG, kg/d	0.48	0.46	0.46	0.47	0.007	0.001	0.039	0.450
ADFI, kg/d	0.67	0.67	0.67	0.66	0.010	0.341	0.172	0.563
G:F	0.72	0.68	0.68	0.71	0.004	<0.001	<0.001	0.558
Energy efficiency, kg gain/Mcal ME or NE3
ME	0.22	0.21	0.21	0.22	0.001	0.001	<0.001	0.623
NE	0.29	0.30	0.29	0.30	0.002	<0.001	<0.001	0.233

¹Data are least square means; n = 10 pens per treatment with 10 pigs per pen, totaling 440 pigs; sexes were not split but were even across treatments; 35-d trial.

²The NC was achieved by reducing SID lysine by 10% with proportional lowering of all other essential AA, plus reducing added fat by 1 percentage point.

³Energy efficiency calculated as: ADG / (ME or NE of diet × ADFI).