2 month Pekin barely walks and hasn't grown much

[MastermindRitsu]

I'm sure this sounds like an open and shut case of Niacan deficiency, but I wanted to come here just in case for advice. I bought several Pekin ducks from Tractor Supply, and none of them showed signs of sickness or injury. I've taken care of ducks for about 3 years so I know exactly how to care for my children. But I'm stumped at this case. This duck started sitting down and not following its flock about a week ago. Hes eating and drinking just fine, and it doesn't act sick at all. But he's half the size of his siblings and despite the Nican suppliments he's been given, his condition hasn't been improving at all.

Heres a video if it helps illustrate the situation: https://streamable.com/1wt9oy

 

[Isaac 0]

Looks like he is deficient in B3 to me. Could you pick him up some Cattle B injectable? TSC will have it.

 

[Ratchnick]

Ok, so what are you feeding them?

 

[Ratchnick]

What niacin supplement are you giving and how much.

 

[Miss Lydia]

Bless that little one! If this is a niacin deficiency the liquid b complex will help so much more than any niacin on its own. Def worth trying. What feed are you using? You’ll need to start it out on Half ml daily over a tasty treat. Just enough treat the little one gets full dose.