Table 1. Average daily gain, average daily feed intake and feed conversion ratio (mean ± standard error of the mean) for pigs provided with in-feed antibiotics (n = 420) and for pigs with no in-feed antibiotics (n = 420) during the first and the second weaner stages.

Variables	Treatment		P-value
	No In-feed antibiotics	In-feed antibiotics
First weaner stage
Average daily gain, g	402.2	435.6	0.018
	±18.20	±13.03
Average daily feed intake, g	584.6	646.5	0.048
	±39.88	±28.83
Feed conversion ratio	1.48	1.52	0.483
	±0.034	±0.032
Second weaner stage
Average daily gain, g	711.0	743.7	0.774
	±32.31	±42.58
Average daily feed intake, g	1380.9	1440.2	0.589
	±29.29	±60.09
Feed conversion ratio	1.95	1.95	0.944
	±0.054	±0.045