Table 6.
Multivariable linear regression model for ADG1, ADG2, and ADG-overall1 in 153 weaned beef calves according to their CRS status2 and TUS status3
| Variable | ADG1 | ADG2 | ADG-overall | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Estimate ADG (kg/d) | SE | P-value | Estimate ADG (kg/d) | SE | P-value | Estimate ADG (kg/d) | SE | P-value | |
| Intercept | 0.54 | 0.055 | <0.0001 | 0.17 | 0.035 | <0.0001 | 0.32 | 0.027 | <0.0001 |
| CRS status | |||||||||
| − | Referent | Referent | Referent | ||||||
| + | 0.01 | 0.088 | 0.9029 | 0.03 | 0.057 | 0.6316 | 0.02 | 0.043 | 0.5745 |
| TUS status | |||||||||
| − | Referent | Referent | Referent | ||||||
| + | −0.28 | 0.088 | 0.0016 | 0.05 | 0.057 | 0.4028 | −0.09 | 0.043 | 0.0346 |
1ADGs calculated with individual body weights (kg) from day 0 to 28 (ADG1), day 28 to 65 (ADG2) and ADG-overall.
2Classification is based on the CRS developed by McGuirk and Peek (2014). Calves with CRS ≥ 5 were CRS+.
3Classification is based on the thoracic ultrasound evaluation. Animals with lung consolidation ≥ 1 cm2 in at least one ultrasound evaluation were TUS+.