There is so much conflicting information on the web about supplementing ducklings with niacin it's frustrating. And I can't find mention of how often to provide niacin no matter the form that it is administered to the ducklings. I bought a pack of BVS Poult Start from Metzer farms thinking that I'd give this to my ducks as a good source of vitamins and niacin. But on the package it says it's used for times of stress. Does anyone else use this product? The dosage comes out to about 1/8th of a teaspoon per gallon of water. Essentially a small pinch. If this product is sufficient for their niacin needs, should I provide it daily, once weekly or at some other time interval? I'm going to look for Brewers yeast on my way home today. With Brewers yeast it seems best to just sprinkle some over their feed. How many times per week should this be added to their feed? I'm not having trouble with my ducks but I want to be sure they are getting enough niacin. I have them on Dumor chick starter/grower. They are now 8 days old. There is some sitting when they are eating and drinking. If I can't find Brewers yeast but can find the non-flush niacin tablets I'll add it to their water. 100 mg/gallon as far as I understand it. Again, how many times per week should I do this? Or is it once daily? Moving on... If I want to provide my ducklings with some chopped leafy greens in a bowl of water do I have to provide grit? Should I just provide grit anyways? Looks like grit is sprinkled over their feed once weekly. Thanks for the help.