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...

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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:

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antioxidants by quenching of free radicals,

chelating metal ions that induce the production of free radicals and

by 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

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).

MATERIAL 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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