Table 1.

Results from the multivariate permutational analyses (PERMANOVA) of differences in Bray–Curtis indices of dissimilarity according to the feed supplementation and the experimental series

Explanatory variable	d.f.	SS	Mean Sqs	Pseudo F	r2	Pr (>F)
Series	1	0.179	0.179	48.908	0.153	0.001
Feed	1	0.237	0.237	64.969	0.204	0.001
Series × feed	1	0.091	0.091	24.991	0.078	0.032
Residuals	18	0.658	0.036		0.564

d.f., degrees of freedom; SS, sum of squares; Mean Sqs, mean sum of squares; pseudo F, F value by permutation.