Vitamin D-biofortified beef: A comparison of cholecalciferol with synthetic versus UVB-mushroom-derived ergosterol as feed source

Sarah K. Duffy, John V. O'Doherty*, Gaurav Rajauria, Louise C. Clarke, Aoife Hayes, Kirsten G. Dowling, Michael N. O'Grady, Joseph P. Kerry, Jette Jakobsen, Kevin D. Cashman, Alan K. Kelly

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

This study investigates dietary fortification of heifer feeds with cholecalciferol and ergocalciferol sources and effects on beef total vitamin D activity, vitamer, respective 25-hydroxymetabolite contents, and meat quality. Thirty heifers were allocated to one of three dietary treatments [(1) basal diet + 4000 IU of vitamin D3 (Vit D3); (2) basal diet + 4000 IU of vitamin D2 (Vit D2); and (3) basal diet + 4000 IU of vitamin D2-enriched mushrooms (Mushroom D2)] for a 30 day pre-slaughter period. Supplementation of heifer diets with Vit D3 yielded higher (p < 0.001) Longissimus thoracis (LT) total vitamin D activity (by 38–56%; p < 0.05) and serum 25-OH-D concentration (by 20–36%; p < 0.05), compared to that from Vit D2 and Mushroom D2 supplemented animals. Irrespective of vitamin D source, carcass characteristics, sensory and meat quality parameter were unaffected (p > 0.05) by the dietary treatments. In conclusion, vitamin D3 biofortification of cattle diets is the most efficacious way to enhance total beef vitamin D activity.

Original languageEnglish
JournalFood Chemistry
Volume256
Pages (from-to)18-24
ISSN0308-8146
DOIs
Publication statusPublished - 1 Aug 2018

Keywords

  • Cholecalciferol
  • Ergocalciferol
  • Heifers
  • Longissimus thoracis
  • Vitamin D₂-enriched mushrooms

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