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Season’s Greetings Valued Subscribers,
Calving in January and February presents unique challenges, especially during periods of extreme cold, wind, and fluctuating temperatures. Cold stress increases nutrient requirements, weakens immune response, and raises the risk of dystocia, weak calves, scours, pneumonia, and delayed rebreeding.
Proactive management—including proper vitamin and mineral supplementation—can significantly improve calving success, calf vigor, and cow recovery during winter calving.
Why Cold Weather Increases Nutrient Needs
When temperatures drop below the cow’s lower critical temperature (around 32°F for dry cows and higher for wet or wind-exposed animals), energy and nutrient demands increase rapidly. Cows divert nutrients to maintain body heat, leaving fewer nutrients available for fetal development, colostrum quality, and immune function.
Without adequate supplementation, producers may see:
- Increased retained placentas
- Weak or slow-to-nurse calves
- Higher calf morbidity and mortality
- Lower colostrum quality
- Delayed return to estrus
Key Vitamins & Minerals Needed for Winter Calving
Vitamin A
Role: Fetal development, immune function, calf vigor
Risk in Winter: Stored forages and weathered feeds are often deficient
Deficiency Signs: Weak calves, poor vision, higher disease pressure
Recommendation:
- Supplement 60–90 days prior to calving
- Critical for cows consuming hay or silage with limited green forage
Vitamin D
Role: Calcium absorption, skeletal development, muscle strength
Risk in Winter: Limited sunlight exposure reduces natural synthesis
Deficiency Signs: Weak calves, increased milk fever risk
Recommendation:
- Supplement beginning 45–60 days pre-calving
- Especially important during prolonged confinement or cloudy conditions
Vitamin E
Role: Immune function, colostrum quality, calf health
Risk in Winter: Levels decline in stored feeds
Deficiency Signs: Increased scours, pneumonia, retained placentas
Recommendation:
- Begin 30–60 days prior to calving
- One of the most critical winter vitamins for calf survival
Selenium
Role: Antioxidant protection, immune response, muscle function
Risk in Winter: Many Midwestern soils are selenium-deficient
Deficiency Signs: White muscle disease, weak or stillborn calves
Recommendation:
- Supplement 60 days prior to calving
- Ensure levels are adequate but within legal limits
Copper
Role: Immune response, reproductive performance, hair coat quality
Risk in Winter: Antagonists like sulfur and iron reduce absorption
Deficiency Signs: Poor immunity, faded hair coat, increased sickness
Recommendation:
- Provide a highly bioavailable copper source
- Start 90 days pre-calving for best results
Zinc
Role: Immune health, hoof integrity, udder health
Risk in Winter: Increased stress and disease exposure
Deficiency Signs: Poor healing, higher mastitis risk
Recommendation:
- Supplement 60 days pre-calving
- Organic zinc sources improve absorption
Magnesium & Calcium
Role: Muscle function, calving ease, metabolic health
Risk in Winter: Increased demand during cold stress
Deficiency Signs: Muscle weakness, milk fever, slow calving
Recommendation:
- Balance rations 30 days pre-calving
- Ensure proper dietary ratios, not just total intake
Supplementation Timeline for Winter Calving
90 Days Pre-Calving
60 Days Pre-Calving
30 Days Pre-Calving
At Calving
- Ensure mineral access remains uninterrupted
- Consider targeted supplementation for thin or high-risk cows
Additional Winter Calving Management Tips
- Provide windbreaks and dry bedding to reduce energy loss
- Increase energy density of rations during extreme cold
- Ensure mineral feeders are protected from snow and ice
- Monitor intake—cold reduces mineral consumption if feeders freeze
- Keep fresh, unfrozen water available at all times
Bottom Line
Winter calving can be successful and profitable—but only with proper preparation. Adequate vitamin and mineral supplementation prior to calving improves calf vigor, strengthens immune response, and supports cow recovery during the most stressful time of the year.
Partner with Livestock Nutrition Supplies LLC
Our premium vitamin, mineral, probiotic, and garlic supplements are formulated for maximum bioavailability and performance. Whether you're feeding cattle, hogs, sheep, goats, or poultry, we can help ensure your animals get the nutrients they need to thrive — and your operation gets the results you deserve.
Questions or need help setting up a mineral program?
Contact your livestock nutritionist, veterinarian or local extension office—they're here to help!
Check out our High-Quality Vitamin, Mineral and Protein Supplements to help maximize your herds health. https://livestocknutritionsupplies.com/shop/
Stay informed, stay proactive, and together, let’s safeguard the well-being of our livestock.
Happy Holidays!
Stay Warm, Stay Ready!
Livestock Nutrition Supplies LLC
Info@LivestockNutritionSupplies.com
(531)333-3150
https://livestocknutritionsupplies.com/shop/
For any questions or further information, please do not hesitate to contact us. We’re here to help you provide the best care for your animals.
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