How much VitB3 complex?

[Khaki mama]

Could anyone tell me the dosage for a brand new duck? We have 5 so far...want to make sure there all good. One is showing leg issues, so please help quickly! Thank you!!!

 

[Wyorp Rock]

This article by @Isaac 0 may be helpful https://www.backyardchickens.com/articles/thiamine-deficiency-in-waterfowl-in-progress.75690/

 

[Isaac 0]

I responded to your other thread, but a drop or two very carefully on the side of their bill should suffice.

 

[Khaki mama]

Thank you