Table 1 Comparison of preweaning morbidity, growth and mortality in a randomized trial of the effect of feeding a lacteal-derived colostrum replacer (CR) or pooled maternal colostrum (MC) in calves
Treatment group | P value | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Lacteal-derived CR | Pooled MC | ||||||||
Estimate | n | 95% Confidence interval | Estimate | n | 95% Confidence interval | ||||
Lower | Upper | Lower | Upper | ||||||
Number of calves enrolled | 295 | 273 | |||||||
Preweaning health events | |||||||||
Diarrhea (%) | 15.9 | 47 | 11.8 | 20.1 | 24.5 | 67 | 19.4 | 29.6 | 0.011 |
Respiratory disease (%) | 21.4 | 63 | 16.7 | 26.0 | 21.2 | 58 | 16.4 | 26.1 | 0.974 |
Omphalitis (%) | 0.3 | 1 | 0.0 | 1.0 | 0.4 | 1 | 0.0 | 1.1 | 0.956 |
Treatment with antibiotics (%) | 33.6 | 99 | 28.2 | 38.9 | 43.2 | 118 | 37.3 | 49.1 | 0.018 |
No health events or treatments (%) | 63.4 | 187 | 57.9 | 68.9 | 54.2 | 148 | 48.3 | 60.1 | 0.026 |
Preweaning mortality/100 calves, 60-day follow-up period | 2.4 | 7 | 0.6 | 4.1 | 3.3 | 9 | 1.2 | 5.4 | 0.506 |
Mean birth weight (kg) | 39.1 | 293 | 38.5 | 39.7 | 39.4 | 269 | 38.8 | 40.1 | 0.452 |
Weaning weight (kg) | 58.9 | 275 | 57.9 | 59.8 | 57.0 | 248 | 56.0 | 57.9 | 0.006 |
Mean daily weight gain (kg/day) | 0.405 | 274 | 0.388 | 0.422 | 0.355 | 247 | 0.337 | 0.372 | <0.001 |