TABLE 2.

Number of samples included for each gene target by treatment group^a

Day	No. of samples
	16S rRNA gene		S. alvi (minD)		Gilliamella spp. (rimM)		Bifidobacterium spp. (groEL)
	CTL	TYL	CTL	TYL	CTL	TYL	CTL	TYL
0	40	40	34	33	27	34	31	31
7	39	38	32	16b	29	31	37	16b
14	40	40
21	40	40	35	25	40	38	33	16b
49	39	40	38	37	40	40	17	23

^aSamples that did not amplify or have sufficient reads pass quality control for analysis were not included. Group proportions were compared to 16S amplifications by one-way Fisher’s exact test. CTL, control; TYL, tylosin treated.

^bP < 0.05.