Table 5.
Evenness and diversity of colon microbiota of pigs fed diets with two Cu and Zn sources (SF and HCl) at two Cu levels (15 and 160 mg/kg)1
| Cu and Zn source | Cu level, mg/kg | Shannon | Inverse Simpson |
|---|---|---|---|
| SF | 15 | 2.38ab | 4.31b |
| 160 | 2.31b | 4.07bc | |
| HCl | 15 | 2.54a | 5.18a |
| 160 | 2.12c | 3.36c | |
| SEM | 0.047 | 0.220 | |
| P-value | |||
| Source | 0.761 | 0.715 | |
| Level | <0.0001 | <0.0001 | |
| Source × Level | 0.0006 | 0.0009 |
1Data are means of 12 replicate pens for the two-way interaction, whereas for the main effects of source and level are means of 24 replicate pens (one pig per replicate pen was sampled).
a–cValues within the same column with different letters differ significantly (P < 0.05).