- Jun 13, 2012
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Up to what age do I need to add a niacin supplement to my ducklings' food? I've been using brewers yeast (they are almost 3 weeks old now & all doing fine). But I can't find any solid answer on how long to continue adding it to their food...
![hu.gif](https://www.backyardchickens.com/styles/byc-smilies/hu.gif)