The Importance of Colostrum in Newborn Calves – Vet Guide 2025 🐄🥛

Greetings! I’m Dr Duncan Houston BVSc. For every calf born, colostrum is the most powerful tool we have—it kickstarts immunity, fuels early growth, and sets the stage for lifelong health. In 2025 we prioritize timely feeding, proper storage, and evidence-based protocols—and Ask A Vet is here to support each step of the journey.

1. Why Colostrum Matters ⚕️

• Only passive immunity source: Calves are born with no antibodies. Colostrum supplies IgG within hours.
• Contains immune-boosting proteins: Transferrin and lactoferrin bind iron, limiting bacterial growth.
• Gut absorption window: Maximal in the first 4–6 hours, declines rapidly after 12 hours, near zero by 24 hours.

2. Timing Is Critical ⏱️

Feeding colostrum as soon as possible is essential. While absorption continues up to 24 hours, about 65% is absorbed in the first 6 hours, and just 35% by 12 hours. Delay beyond 12 hours greatly reduces effectiveness.

3. Storage & Handling Best Practices 🧊

• Freeze fresh colostrum: One-quart portions lay flat in freezer bags.
• Thaw gently: Warm water bath ≤122°F (~50°C) for ~1 hour.
• Avoid: Microwaves or high heat, which degrade antibody proteins.

4. What If the Calf Missed Nursing? 🤔

If uncertain whether nursing occurred, feed stored colostrum or high-quality replacement to ensure passive immunity—don’t wait for natural nursing and risk missing the absorption window.

5. Ask A Vet 2025 Colostrum Support 📱

• 📋 Create herd-specific colostrum feeding protocols (volume, timing, quality)
• 📞 Support during thawing, mixing, feeding processes
• 🧪 Help interpret blood test results—serum total protein as success marker
• 📈 Track trends in passive transfer and neonatal health

Conclusion

Colostrum defines a calf’s start in life. Prioritize timing, quality, and proper handling—and lean on Ask A Vet for customized protocols, real-time support, and quality tracking in 2025 and beyond. 🐾🥛