Hello, I purchased 2 pekin ducks I believe about 2 weeks old. I mistakenly was not giving them duck feed but chicken feed nit realizing the niacin concern. Well yesterday I noticed they are both limping with somewhat turned in foot and maybe little swollen hock/joint. They seem to only walk a few steps and plop back down. Now with knowing what I know now, i purchased duck feed and a the durvet b complex. Can you assist in how I can administer it to them, how much? should it be diluted or added to their water? How many times a day should give this to them,
Any assistance would be great I feel so terrible