Figure 6
![Figure 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2180-11-19/MediaObjects/12866_2010_Article_1306_Fig6_HTML.jpg)
Similarity of DGGE profiles generated from PCR-amplified 16S-rRNA in cattle fecal deposits under field conditions. DNA from replicate fecal deposits (N = 3) were pooled for analysis. The time points were days (d) 7, 28, 56, 98, 112, and 175. The treatments were: Control, no antimicrobial agents added to the diets of steers from which fecal deposits originated; A44, chlortetracycline (44 ppm); AS700, chlortetracycline and sulfamethazine (each at 44 ppm); T11, tylosin (11 ppm).