Table 1 Total phenol in feeding diets (a, b, c: different letters within the same column indicate significant differences among levels (p ≤ 0.05)

Basal diet, minerals and 2% Lemon balm

Le

2.89^a

0.15

146

Basal diet, minerals and 2% Sage

Sa

2.73^a

0.15

138

Basal diet, minerals and 2% St. John's wort

Jo

2.39^b

0.10

121

Basal diet, minerals and 2% Small-flowered Willowherb

Wi

2.31^b

0.11

117

Basal diet and minerals

Min

1.98^c

0.10

100

Only basal diet (control)

B

1.98^c

0.10

100