Comparison of colostrum feeding by nipple bottle versus oroesophageal tubing in Holstein dairy bull calves.

Objective: To compare the apparent efficiency of absorption of IgG and failure of passive transfer of immunity rates between calves fed colostrum by nipple bottle (NB) and oroesophageal tubing (OET).

Design: Randomized controlled study.

Animals: 26 Holstein bull calves (age, 4 to 8 hours).