Table 4.

Permutational ANOVA results partitioning effects of bird age and experimental pen on microbial community composition as calculated at a 95% OTU cutoff as described in the text for fecal samples.

	Degrees of freedom	Sums of squares	Mean squares	F	Pr (>F)
Age	2	3.31	1.66	5.95	0.001
Pen	3	1.02	0.34	1.23	0.204
Age:pen	6	2.12	0.35	1.27	0.124
Residuals	45	12.54	0.27
Total	56	19.00