What is the critical window after foaling to absorb colostrum?

What is the critical window after foaling to absorb colostrum?

• A. 6-12 hours
• B. 12-18 hours
• C. 18-24 hours
• D. 24-36 hours

Answer: (B)

The foal’s gut is permeable to large immunoglobulins from colostrum for a limited time after birth, allowing passive transfer of maternal antibodies. Absorption is strongest early on and begins to decline as intestinal closure progresses. By about 12–18 hours after birth, the foal can still absorb a meaningful amount of IgG, but after roughly 24 hours absorption drops off dramatically. This is why the window for absorbing colostrum is considered to be around 12–18 hours post-foaling. Ensuring the foal nurses and receives high-quality colostrum within this period is crucial for establishing adequate passive immunity.

The foal’s gut is permeable to large immunoglobulins from colostrum for a limited time after birth, allowing passive transfer of maternal antibodies. Absorption is strongest early on and begins to decline as intestinal closure progresses. By about 12–18 hours after birth, the foal can still absorb a meaningful amount of IgG, but after roughly 24 hours absorption drops off dramatically. This is why the window for absorbing colostrum is considered to be around 12–18 hours post-foaling. Ensuring the foal nurses and receives high-quality colostrum within this period is crucial for establishing adequate passive immunity.