Vitamin AD3 is a combined premix that delivers vitamin A and vitamin D3 in a single stabilized powder or particle form. It is engineered for feed applications where both micronutrients are needed together to support vision, immune function, calcium metabolism and skeletal development. Because these vitamins are required by virtually every farmed species, AD3 has become a cornerstone of modern livestock nutrition.
Primary Uses of Vitamin AD3 in Animal Feed
The main use of vitamin AD3 is as a fortification ingredient in mash feed, pelleted feed, extruded feed and expanded feed formulations. It is added at carefully controlled inclusion rates to ensure that the final diet meets species-specific recommendations for both vitamin A and vitamin D3 activity.
Commercial AD3 premixes typically supply 500,000 to 1,000,000 IU of vitamin A acetate per gram alongside 100,000 to 200,000 IU of vitamin D3 per gram. This concentrated format allows feed mills to meter very small amounts into large batches while maintaining accurate vitamin levels.
Applications Across Species
Vitamin AD3 is used in diets for swine, poultry, ruminants, aquaculture species and companion animals. Each group has different requirements, but all benefit from the synergistic action of the two vitamins on growth, reproduction and bone health.
Poultry and Swine
In poultry, vitamin AD3 supports epithelial integrity, egg production, hatchability and skeletal development in fast-growing broilers and layers. Swine diets rely on it to maintain reproductive performance in sows, reduce the incidence of rickets in piglets, and promote normal vision and immune response throughout grow-finish phases.
Ruminants and Aquaculture
Beef and dairy cattle receive vitamin AD3 through feed or, in some cases, by deep intramuscular injection as a supplemental source of vitamins A and D3. In aquaculture, AD3 premixes are incorporated into fish and shrimp diets to support skeletal mineralization, stress tolerance and disease resistance under intensive farming conditions.
Why Combining Vitamin A and D3 Matters
Vitamin A contributes to vision, cellular differentiation, epithelial integrity and immune function, while vitamin D3 is essential for the absorption and metabolism of calcium and phosphorus. Delivering both together helps prevent deficiencies such as xerophthalmia, poor growth, weak bones and reproductive disorders that often appear in parallel when diets are unbalanced.
The combined formulation also simplifies feed formulation, reduces handling errors at the feed mill, and lowers the risk of cross-contamination compared with managing two separate premixes.
Stability and Formulation Quality
High-quality vitamin AD3 products are microencapsulated or coated with antioxidants such as BHA and BHT to protect against oxidation, heat and moisture during pelleting and storage. Reliable bioavailability is critical, because vitamin losses during processing can leave animals short of their nutritional targets even when label claims look adequate.
Leading suppliers such as BASF and NHU produce AD3 premixes with defined particle size, flowability and stability profiles tailored to pelleted, extruded and expanded feeds.
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