dsm-firmenich Hy-D 25-Hydroxyvitamin D3
By dsm-firmenich
Last reviewed: February 2026
25-hydroxyvitamin D3 that bypasses liver activation, providing immediately bioavailable vitamin D for calcium metabolism.
Active form of vitamin D3 from dsm-firmenich that bypasses liver conversion, improving calcium metabolism, immune function, and transition cow health in dairy cattle.
Key Features
- Pre-Activated Vitamin D: 25-hydroxylated form bypasses liver conversion, immediately available for calcium regulation
- Hypocalcemia Reduction: Research-backed reduction in subclinical hypocalcemia incidence around calving
- Immune Support: Enhances immune cell vitamin D receptor activation for better pathogen defense
- Low Inclusion Rate: 2-3 mg/head/day included in mineral premix
- Consistent Quality: Manufactured by the world's largest vitamin producer
Advanced Features
- Rovimix Vitamin Line: Complete fat-soluble vitamin portfolio (A, D3, E, K) for dairy premixes
- CRINA Ruminants: Essential oil blend for rumen function and feed efficiency
Ideal For
Farm Types: Commercial dairies, Herds with hypocalcemia challenges, Transition cow programs
Competitive Advantages
What sets Hy-D 25-Hydroxyvitamin D3 apart from alternatives:
- Only commercially available 25-hydroxyvitamin D3 for animal nutrition
- Backed by extensive dairy transition cow research
- Part of the world's largest vitamin production platform
- Pharmaceutical-grade manufacturing ensures consistent potency
Pricing Information
Here is the pricing information for Hy-D 25-Hydroxyvitamin D3:
Hy-D is a premium vitamin D source. Typical cost is $0.02-0.05 per cow per day in the transition cow mineral. Contact dsm-firmenich for pricing.
Pricing Model: Per kilogram, included in premix cost
Pros & Considerations
- Only pre-activated vitamin D product available
- Extensive research base in dairy cattle
- Consistent pharmaceutical-grade quality
- Premium cost vs. standard vitamin D3
- Greatest ROI is in transition period
- Requires proper premix formulation expertise
Implementation & Setup
How to implement Hy-D 25-Hydroxyvitamin D3 on your dairy operation:
Implementation Timeline: Immediate, included in dry cow and fresh cow mineral premix
Training & Support
Training and support options available for Hy-D 25-Hydroxyvitamin D3:
Support Channels:
Evaluation Questions
Key questions to consider when evaluating Hy-D 25-Hydroxyvitamin D3:
- What is your herd's current subclinical hypocalcemia rate at calving?
- Are you already using oral calcium boluses or IV calcium at calving?
- Is Hy-D being targeted to dry and fresh cows or fed to the whole herd?
- What is the total vitamin D budget in your current transition cow mineral?