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. 2017 Jan 4;7:2125. doi: 10.3389/fmicb.2016.02125

Figure 6.

Figure 6

Qualitative comparison of galliforme and anseriforme caeca contents at the phylum level. Row (A) Mid-Week 1. Chicken data from Lu et al. (2003). ND, no data available. Row (B) End of week 1. Chicken 1 data from Lu et al. (2003) and Chicken 2 data from Asrore et al. (2015). Row (C) End of Week 3. Chicken 1 data from Lu et al. (2003) and Chicken 2 data from Asrore et al. (2015). Row (D) End of week 4. Chicken 1 data from Lu et al. (2003) and Chicken 2 data from Choi et al. (2014). Overall, chickens show predominately Firmicutes in the cecae early in life whereas ducks show near equal proportions of both Firmicutes and Proteobacteria. Though compositionally chicken and duck are similar, the levels of Firmicutes decline by the end of the growth period in chickens (left 2 columns), while they maintain levels in ducks (two right columns). As chickens age (rows), Fusobacteria increases and Bacteroides varies. Proteobacteria is much higher in ducks throughout the grow-out. Ducks raised in the aviary at Hope College showed no Bacteroidetes whereas ducks raised in the barn setting showed high levels of Bacteroidetes compared even to the chicken data. Turkey data could not be included due to collection only at 18 weeks.