Vitamin D-biofortified beef: a comparison of cholecalciferol with synthetic versus UVB-mushroom-derived ergosterol as feed source
Duffy, Sarah K.; O'Doherty, John V.; Rajauria, Gaurav; Clarke, Louise C.; Hayes, Aoife; Dowling, Kirsten G.; O'Grady, Michael N.; Kerry, Joseph P.; Jakobsen, Jette; Cashman, Kevin D.; Kelly, Alan K.
Date:
2018-02-21
Copyright:
© 2018 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Citation:
Duffy, S. K., O'Doherty, J. V., Rajauria, G., Clarke, L. C., Hayes, A., Dowling, K. G., O'Grady, M. N., Kerry, J. P., Jakobsen, J., Cashman, K. D. and Kelly, A. K. (2018) 'Vitamin D-biofortified beef: A comparison of cholecalciferol with synthetic versus UVB-mushroom-derived ergosterol as feed source', Food Chemistry, 256, pp. 18-24. doi: 10.1016/j.foodchem.2018.02.099
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.
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