How can I help my duck get better with niacin deficiency?

[Drowsy_808]

We bought her nutritional yeast yesterday and gave her water, but we don’t know whether we’re supposed to let her walk and play like usual or if resting more will help her recover. We’ll also cook some niacin rich foods for her to help her get better quickly, but other than that, is there any way we can support her? How much and how often should we give her nutritional yeast everyday (for adult ducks)?

She’s an adult duck, currently one years old. She’s a Pekin duck and she lives inside the house. She has Manna Pro pellets as her main feed, corn, tomatoes and eggs as snacks every now and then.

 

[OneHappyDuckie]

Does she get a feed that's made for ducks?
Feed that's made for waterfowl has more niacin in it, which is why I'm asking. You got a lot of good advice in your other threads too.

 

[Wyorp Rock]

https://www.backyardchickens.com/th...in-and-or-nutritional-yeast-everyday.1560459/