I'm not certain if I'm following correct protocol in putting my concern here. If not, please advise.
I'm new to ducks and have recently adopted two Pekin ducks from a young friend, a year old drake and a two-month old hen. I've had them for a few weeks. The hen was fine when she came here but appears to have injured a leg or a hip, I'm guessing from a mating effort as her head showed some activity as well. She can no longer stand up or walk and her ankles are hot to the touch when I pick her up. To make it worse, when I approached to pick her up the other night, he freaked out and ran over the top of her. He weighs about three times what she does and I could tell it hurt her. I've been giving her children's ibuprofen each evening when I put her to bed. I keep her in a kennel carrier at night so he can't have access to her and keep an eye on him during the day. I take her to the pool a couple of times each day and I feed her separately by hand, put electrolytes in her evening water. Their prior owners fed them chicken feed so that was her start in life. I feed Purina duck food which has 65 ppm niacin but I'm reading that she's going to need more than that if she's going to heal. Herewith my confusion: there's a ton of different niacin products out there! Brewer's yeast, niacin capsules, injectable liquid. What's the best source of niacin in this instance and how much? Does she need something in addition? Should I be doing anything to help her that I'm not already doing?