Table 3.

Summary of associations between initial weight and average daily gain and enzyme linked immunosorbent assay (ELISA) antibody to Neospora caninum status

Animal health variable	Overall mean	Difference between N. caninum antibody-positive and antibody-negative calves (mean and 95% CI)
Initial weight (kg)a,b	261.1 (s = 36.7)	0.35 (−4.6, 5.3) P = 0.89
Average daily gain (kg/day)a,c	1.53 (s = 0.33)	−0.02 (−0.6, 0.03) P = 0.50
Initial weight (adjusted for log BVDV antibody concentration) (kg)b,d,e	259.6 (s = 34.0)	−0.14 (−6.8, 6.6) P = 0.97
Average daily gain (adjusted for log BVDV antibody concentration) (kg/day)c,d,e	1.55 (s = 0.42)	−0.04 (−0.10, 0.02) P = 0.19

CI — Confidence interval; BVDV — Bovine viral diarrhea virus

^an = 1861

^bAdjusted for occurrence of initial sick on arrival treatment

^c Adjusted for initial weight, initial sick on arrival treatment, initial undifferentiated fever treatment, initial no fever treatment, and designation as “chronic”

^dn = 283

^e Adjustments for presence or absence of antibodies to BVDV at various cutoff values did not change the interpretation or results