Vitamin D deficiency is prevalent worldwide and identification of alternative food-based strategies are urgently warranted. In two studies, 12-week old crossbred pigs (Duroc x (Large White x Landrace)) were exposed daily to narrowband UVB radiation for ∼10 weeks or control (no UVB exposure) until slaughter. In Study 1 (n = 48), pigs were exposed to UVB for 2 min and in Study 2 (n = 20), this duration was tripled to 6 min. All pigs were fed the maximum permitted 2000 IU vitamin D /kg feed. Loin meat was cooked prior to vitamin D LC-MS/MS analysis. In Study 1, pork loin vitamin D did not differ between groups. Study 2 provided longer UVB exposure time and resulted in significantly higher loin vitamin D (11.97 vs. 6.03 μg/kg), 25(OH)D (2.09 vs. 1.65 μg/kg) and total vitamin D activity (22.88 vs. 14.50 μg/kg) concentrations, compared to control (P < 0.05). Pigs remained healthy during both studies and developed no signs of erythema. Biofortification by UVB radiation provides an effective strategy to further safely increase the naturally occurring vitamin D content of pork loin, alongside feed supplementation. [Abstract copyright: Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.]
|Number of pages||11|
|Early online date||14 Jan 2023|
|Publication status||Published online - 14 Jan 2023|
Bibliographical noteCopyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.
This work was funded as part of a Department for the Economy (DfE) Co-operative Awards in Science and Technology (CAST) PhD studentship, supported by Devenish Nutrition Limited and Agri-Food Quest Competence Centre (AFQCC).
© 2023 The Authors
- UV radiation
- Feed supplementation
- 25-hydroxyvitamin D (25(OH)D)