Why cider vinegar and cod liver oil? — The Poultry
2008-4-24 · I have kept and bred poultry for over 50 years and have always used both Cod liver oil and Cider Vinegar. The chicks go on CV from day 1 and stay on it for life. Cod liver oil is liquid sunshine and vitamins A and D are derived from it by poultry. If your birds are not out in the sunshine making thier own Vit D they require it.
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