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Abnormal yolk color and mottling caused by dietary tannic acid and tannins

, : Abnormal yolk color and mottling caused by dietary tannic acid and tannins. Poultry Science 52(5): 1784-1786

Eggs with olive green yolks were produced by hens housed on litter of red gum (Eucalyptus camaldulensis) sawdust, which was found to be eaten. Hens given experimentally 0.5% tannins extracted from the sawdust gave eggs of similar colour and with 0.05% tannins the yolks were mottled.


DOI: 10.3382/ps.0521784

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