Colostrum management practices are considered successful when:
- 90% of the tested calves have a serum total protein concentration ≥ 5.2 g/dl
- 80% of tested calves have a serum total protein concentration ≥ 5.5 g/dl
In the UW-Extension Heifer Blueprint Assessing Failure of Passive Transfer, Oconto County Agriculture Agent Sarah Mills-Lloyd and Fond du Lac County Dairy & Livestock Agent Tina Kohlman share how to collect blood, determine if passive transfer failed, and reasons for failure of passive transfer.
For more information regarding calf management, please visit UW-Extension Dairy Calf & Heifer Management.