Vitamin D was long considered a compliance nutrient rather than a performance lever. In this episode, we break down what’s changed in the last couple of years, from BioMar doubling vitamin D₃ across salmon diets to new research suggesting salmon may synthesize vitamin D from sunlight, then zoom out to explain how vitamin D actually works in the body, why modern feeds increased the need for supplementation, and how the EU’s 2019 regulation opened the door to much higher inclusion rates. We also dig into what these findings could mean for different farming environments, and close with a conversation with Dr. Sebastien Rider (DSM-Firmenich) on the latest studies, open questions, and why 25-hydroxyvitamin D products like Hy-D are gaining attention. 

Sign up for DSM’s webinar on Vitamin D here.

For more aquaculture insights head to our Fish n’ Bits blog.