13 Mar 2023

Grape polyphenols (NuxaFen®) can replace synthetic vitamin E

Dry grape extracts (Vitis Vinifera spp. Vinifera, NuxaFen®, Nuproxa Switzerland) contain high levels of polyphenols, including proanthocyanidins, which confer high antioxidant capacity...

grape icon nuxafen

Grape polyphenols (NuxaFen®) can replace synthetic vitamin E under standard and challenging formulations

Dry grape extracts (Vitis Vinifera spp. Vinifera, NuxaFen®, Nuproxa Switzerland) contain high levels of polyphenols, including proanthocyanidins, which confer high antioxidant capacity.

Polyphenols work as:

polyphenols icon nuxafenantioxidants by quenching of free radicals,

polyphenols icon nuxafenchelating metal ions that induce the production of free radicals and

polyphenols icon nuxafenby increasing the activity of antioxidant enzymes like SOD, CAT and GPx.

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Previous work has shown that NuxaFen® can partly replace synthetic vitamin E in broiler diets without altering zootechnical performance (Dewez et al., 2022).

vitamin E nuxafen

objective icon nuxafenOBJECTIVE

Evaluate the capacity of NuxaFen® to partially or totally, replace synthetic vitamin E in broilers fed a diet with high levels of polyunsaturated fatty acids, Fe and metabolizable energy (ME).

methods icon nuxafenMATERIAL AND METHODS

The study was conducted with the research service of ZOOTEST, Ploufragan and within a commercial barn (GAEC de La Ville Gestin, Gestin 22640).

One thousand and twenty (1020) day-old ROSS-308 chicks (100% males) were weighed and




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