Table 2.

Meta-regression of growth performance in weanling pigs to changes in different concentrations of dietary lactose

Items	Response variable	Linear R2	Linear RMSE	Linear AIC	Linear P-value	Quadratic R2	Quadratic RMSE	Quadratic AIC	Quadratic P-value
d 0–7 post-wean
ADFI, g/d	Lactose level, %	0.800	66.66	235.5	0.313	0.802	68.85	237.6	0.504
ADG, g/d	Lactose level, %	0.901	48.35	226.5	0.069	0.903	49.63	229.1	0.259
G:F	Lactose level, %	0.995	0.025	15.01	0.001	0.996	0.135	30.8	0.141
d 7–14 post-wean
ADFI, g/d	Lactose level, %	0.992	13.38	580.0	0.001	0.993	12.69	593.2	0.094
ADG, g/d	Lactose level, %	0.963	24.73	603.3	0.004	0.973	21.86	158.0	0.031
G:F	Lactose level, %	0.887	0.062	37.6	0.435	0.904	0.093	0.058	0.093
d 14–35 post-wean
ADFI, g/d	Lactose level, %	0.388	167.2	534.6	0.830	0.388	169.4	534.5	0.844
ADG, g/d	Lactose level, %	0.520	98.15	496.3	0.726	0.522	99.32	497.1	0.696
G:F	Lactose level, %	0.705	0.05	−49.2	0.723	0.708	0.051	−33.5	0.514