Is it bad to give more than one protein?

I've been having issues with one of my babies, Cream, I still am not 100% sure if it was chicken her allergic reaction came from, bc I had given my kitties numerous treats, wet and dry food. So the most common theme was chicken. She has been eating NV Pride duck flavor, it's the ONlLY new food she will eat (and very little of it) So I am still giving her Mid East Feast by weruva. And less n less of dry food . No
More treats either. But I do have other kittys n they do t like duck. They seem to like the lamb and also get fish (which I love to get them all away from). I thought rabbit seemed like the best choice, health wise but the only form of rabbit Cream will eat is the raw natures variety boost, is it bad to give her this also? Btw- her excessive itching n little bumps that she had under n around her neck n face r getting better. So I
Must be doing something right. I just bought NV Insticxt raw boost duck n turkey meal dry food, it says it has raw inside with the dry food, I always left kibble out at night for them n I can not just get them
Off cold turkey, the other kitties, still
Want their kibble. Lol! Sorry for the long story, just would really like to know if you guys give your babies more than protein? And is this bad to do ? I never want this to happen again! Thank you all for everything u post! This site has been everything to me through this horrible time! Cat (well animal) people are truly the best!!!!

It's totally fine to mix proteins!  My only concern would be that you won't be able to tell which protein a reaction is coming from if there is one.  But if she is continuing to improve I see no issue with mixing.

Normally there isn't an issue with more than one protein unless dealing with something like IBD.  It can make isolating an allergic reaction difficult if not impossible,

Thanks talking peanut! The new proteins I'm trying to get her like, duck, rabbit, lamb. Buffalo, venison, she has never had before. She's been a chicken eater since she was little, and eats fish occasionally, bc that's what the other kitties always ate. Since I've pretty much eliminated her chicken, there's just a little in her old kibble that she loves, but I haven't gave her canned chicken in over a week. She loved paw licken chicken and EARTHBORN. So it's been really hard getting her like new food. Thank U again for responding [emoji]128522[/emoji]

Hi Denice, is IBD an allergy? I thought that was when they have issues with stool? She had patches that was scratching to the point her hair fell out, small spots under and behind her neck and also by her ear.

She is going back to a new vet Wednesday, I wasn't happy the way the vet who treated twice for this problem treated me, she didn't like my questioning her and was very dismissive to my baby's illness!

I would hold off until she is completely healed before adding in a new protein. I understand trying to find something she likes and will eat enough of; but, you don't want to add too many things at a time.

Also, I personally leave at least one or two proteins off, so that if, in the future, other allergies develop, you have something else to try. (For me, I haven't fed Kangaroo, Buffalo, Quail or Lamb.)

If you want to add a new protein, do so and then wait 4-6 weeks before trying another new protein.

The causes of IBD are varied but it is auto immune in nature and tends to go hand in hand with allergies and other auto immune disorders.  I would take it really slow when adding other proteins and add only one at a time with several weeks between additions.

With allergies and food sensitivities it is actually good in time to feed multiple proteins.  Many kitties do seem to develop issues when only one protein is fed over a very long period of time.