Table 2.
Mean blood pCO2, pO2, SaO2 (arterial oxygen saturation, or oxyhemoglobin concentration), and sO2 (oxygen concentration dissolved or carried in the blood) values at 8 woa in layer pullets before a RlowMycoplasma gallisepticum (RlowMG) challenge at 8 and 10 woa and that belonged to basal (control) and XPC-supplemented (XPC) dietary treatment groups.1
| Variable | pCO2 (mm Hg) | pO2 (mm Hg) | SaO2 (%) | sO2 (%) |
|---|---|---|---|---|
| Diet2 | ||||
| Control | 49.7 | 68.3 | 82.2 | 47.0 |
| XPC | 48.9 | 69.1 | 82.6 | 48.5 |
| Pooled SEM | 0.5 | 0.9 | 0.4 | 1.1 |
| Main effect P-value | 0.2765 | 0.4764 | 0.4589 | 0.3352 |
| Challenge3 | ||||
| Unchallenged | 48.6 | 68.8 | 82.7 | 48.5 |
| RlowMG challenged | 50.0 | 68.6 | 82.2 | 47.0 |
| Pooled SEM | 0.5 | 0.9 | 0.4 | 1.1 |
| Main effect P-value | 0.0667 | 0.9186 | 0.3305 | 0.3632 |
| Diet-Challenge4 | ||||
| Control and unchallenged | 48.7 | 68.4 | 82.6 | 48.0 |
| Control and RlowMG challenged | 50.6 | 68.1 | 81.8 | 45.9 |
| XPC and unchallenged | 48.4 | 69.1 | 82.8 | 48.9 |
| XPC and RlowMG challenged | 49.3 | 69.1 | 82.5 | 48.1 |
| Pooled SEM | 0.7 | 1.2 | 0.5 | 1.6 |
| Interaction P-value | 0.5024 | 0.9186 | 0.6785 | 0.6675 |
Abbreviation: woa, wk of age.
Challenge treatment designations were preassigned, as main and interaction effect means involving challenge were before challenge.
Main effect means based on 4 birds in each of 16 units in each dietary treatment group across challenge treatment (64 total birds).
Main effect means based on 4 birds in each of 16 units in each challenge treatment group across dietary treatment (64 total birds).
Interaction effect means based on 4 birds in each of 8 replicate units in each diet-challenge treatment combination group (32 total birds).