Details

Autor(en) / Beteiligte

• 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.

Titel

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

Ist Teil von

• Food chemistry, 2018-08, Vol.256, p.18-24

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •UVB-exposed vitamin D2-rich mushroom used as a natural novel feed ingredient.•Dietary biofortification can successfully enhance beef vitamin D content.•Vitamin D3 is efficient supplementation source to boost beef vitamin D activity.•Consumption of vitamin D3-biofortified diet can contribute ∼20% to the current EAR. 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.