You don't have feel like you are bad. We all make mistakes!Oh man, now I feel like a bad duck Momgoing to TSC now!!
You can still use the other feed if you can supplement with the niacin correctly. The Jumbo Pekin grows so fast they are often the first to show symptoms.
Just do your best now!
Maybe someone will know how to get that duckling back on track more quickly... I'm mostly useless in that area.
