Table 4.
Multilevel linear regression models of serum IgG concentrations and average daily gain to weaning in 219 beef calves assisted at birth and medicated with subcutaneous meloxicam (Metacam, 20 mg/ml, 0.5 mg/kg bodyweight, Boehringer Ingelheim, Ingelheim, Germany) or placebo (0.025 ml/kg) while adjusting for covariates and clustering by ranch
| Coefficient | se | P value | Proportion of variance (%) | ||
| Individual level | Ranch level | ||||
| Serum IgG concentration, g/l | >99 | <1 | |||
| Medication group | |||||
| Placebo | Referent | – | |||
| Meloxicam | 3.6 | 2.6 | 0.2 | ||
| Method of colostrum consumption | |||||
| Nursed from cow | Referent | – | |||
| Bottle-fed or tube-fed | −8.5 | 3.2 | 0.008 | ||
| Average daily gain to weaning, kg/day | 96.8 | 3.2 | |||
| Medication group | |||||
| Placebo | Referent | – | |||
| Meloxicam | 0.02 | 0.03 | 0.4 | ||
| Dam parity | |||||
| Mature cow | Referent | – | |||
| Heifer | −0.1 | 0.04 | 0.02 | ||
| Birth weight, kg | 0.009 | 0.002 | <0.0005 | ||
| Serum IgG concentration, g/l | 0.002 | 0.0008 | 0.008 | ||