Table 8.

Results of a linear mixed model on the relationship of serum protein fractions determined by routine electrophoresis and the serostatus for respiratory pathogens measured at arrival with average daily gain (kg/day) in 147 rosé veal calves.

Variable	Level	Reference	β	95% CI	P-value
Intercept			0.391	0.079–0.703	<0.001
Alpha-2 globulin (g/L)			−0.012	−0.024 to −0.0	<0.05
Immunoglobulin (Ig) (g/L)	<7.5 g/L	>7.5 g/L	−0.079	−0.129 to −0.029	<0.01

CI = confidence interval.

Arrival batch was added as a random effect (1% of total variation in average daily gain was situated at the arrival batch level).