Uploaded July 2026 | Updated September 2026, 2 days ago

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Colostrum has maternal antibodies that will be the immune system for the calf. Since it's not making its own antibodies that's the "passive transfer". So we're measuring the calf's antibodies that it got from the colostrum. So that's where the evaluating passive transfer of immunity comes from.


https://extension.usu.edu/dairy/research/colostrum-and-rethinking-passive-transfer-in-dairy-calves

https://extension.usu.edu/dairy/research/colostrum-management-for-dairy-calves-key-practices-for-calf-health-and-performance