I recall we were talking about individual birds' developing dietary deficiency from commercial food in the context of FLHS. Which is true of everything really. There will always be a very small number of outliers which is precisely why good husbandry can't be performed by rote. There's always a small chance of encountering the outlier and having to apply creative problem solving.Yes exactly. I researched it and checked that conclusion with the vet. She says it just washes through just like with people. I also learned (from hands on experience) that it turns everything yellow. Fortunately it washes off but I got pretty splattered when she shook her head to let me know she had drunk enough of it!
I also learned that there is individual variation in Vitamin metabolism (makes sense, I just never thought about it before) and that commercial feeds of course cater to the 'typical' (some say minimum) need. So it isn't absurd that a chick could become deficient even if on commercial feed if they have a higher than typical need for it.
All to say that I am not stopping her B vitamins yet, though I may ease off on E and K which she is also getting.
A long way of saying: you did it!!! She's an outlier and you succeeded in not only keeping her going, but in helping her heal.
Brilliant work RC!! And hats off to your vet too.
Glad you also found your way through this bumpy road too RC 
