Table 11.
Blood VFA concentrations from calves fed a CS without or with MON, or EOC, or combination of both MON and EOC (MON × EOC)
| Treatment1 | Main effects & Interaction, P-value < 2 | |||||||
|---|---|---|---|---|---|---|---|---|
| Measurement | CS | MON | EOC | MON + EOC | SEM | MON | EOC | MON × EOC |
| N | 20 | 20 | 20 | 20 | — | — | — | — |
| Acetate, µmole/L | 381.1 | 334.3 | 451.4 | 428.7 | 8.32 | 0.01 | 0.01 | 0.16 |
| Propionate, µmole/L | 41.5c | 49.5b | 55.2ab | 59.5a | 1.72 | 0.01 | 0.01 | 0.01 |
| Isobutyrate, µmole/L | 15.3 | 14.9 | 20.5 | 20.1 | 0.40 | 0.40 | 0.01 | 0.99 |
| Butyrate, µmole/L | 44.8 | 42.6 | 59.7 | 55.9 | 1.24 | 0.02 | 0.01 | 0.53 |
| Isovalerate, µmole/L | 14.4 | 14.6 | 23.4 | 23.5 | 0.44 | 0.81 | 0.01 | 0.93 |
| Valerate, µmole/L | 4.7 | 4.3 | 4.7 | 4.8 | 0.12 | 0.26 | 0.07 | 0.07 |
| Total VFA, µmole/L | 501.9 | 460.3 | 614.9 | 592.4 | 11.36 | 0.01 | 0.01 | 0.41 |
1CS, calf starter; MON, CS containing monensin; EOC, CS containing essential oil and cobalt; MON+EOC, CS containing monensin, essential oils and cobalt.
2 P-value for main effects of MON or EOC and interaction.
a–cMeans in the same row with unlike superscripts differ, P < 0.05.