I am reading my Storey's Guide book and a few web links and am trying to figure out what i need to do for my ducklings with niacin They are now 2 weeks old. I have been feeding them the Mazuri starter food (20% protein & 83ppm Niacin) and i also have the Mazuri Maintenance food (14% protein & 38ppm Niacin). Both foods are available to them, although they have been eating the starter much more, since it lasts longer and the adults eat up the maintenance food pretty fast, and plus it's smaller and easier to eat. Storey's guide mentions that they should eat starter for just the first 2 weeks and then move onto a lower protein, so i figure that means stop providing it and just have the Maintenance out. My question is that i see varying thoughts on Niacin. The starter has more niacin in it and i see some articles and the book saying they should be given niacin until about 8-10 weeks, so does that means i should stop giving them the starter food and supplement their water?