Table 7.
Mean blood pCO2, pO2, SaO2 (arterial oxygen saturation, or oxyhemoglobin concentration), and sO2 (oxygen concentration dissolved or carried in the blood) values at 12 woa in birds after a RlowMycoplasma gallisepticum (RlowMG) challenge at 8 and 10 woa and that belonged to basal (control) and XPC-supplemented (XPC) dietary treatment groups.
| Variable | pCO2 (mm Hg) | pO2 (mm Hg) | SaO2 (%) | sO2 (%) |
|---|---|---|---|---|
| Diet1 | ||||
| Control | 49.6 | 73.0 | 85.3 | 53.6 |
| XPC | 48.8 | 72.4 | 85.3 | 53.6 |
| Pooled SEM | 0.6 | 0.8 | 0.3 | 0.8 |
| Main effect P-value | 0.2771 | 0.6043 | 0.8904 | 0.9759 |
| Challenge2 | ||||
| Unchallenged | 47.8b | 75.6a | 86.0a | 56.4a |
| RlowMG challenged | 50.6a | 69.9b | 84.6b | 50.8b |
| Pooled SEM | 0.6 | 0.8 | 0.3 | 0.8 |
| Main effect P-value | 0.0006 | 0.0001 | 0.0010 | 0.0001 |
| Diet-Challenge3 | ||||
| Control and unchallenged | 47.6 | 76.3 | 86.2 | 57.6a |
| Control and RlowMG challenged | 51.7 | 69.8 | 84.3 | 49.6b |
| XPC and unchallenged | 48.0 | 75.0 | 85.7 | 55.2a |
| XPC and RlowMG challenged | 49.5 | 69.9 | 84.9 | 52.0b |
| Pooled SEM | 0.8 | 1.1 | 0.4 | 1.1 |
| Interaction P-value | 0.1145 | 0.5489 | 0.1113 | 0.0356 |
a,bMeans in a column within type of variable and main effect or interaction treatment with no common superscript differ significantly (P ≤ 0.05).
Abbreviation: woa, wk of age.
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).