|Thank you for this website as well. The food that I have him on now is Hills S/D and then I have to move on to Hills C/D. Both of them are dry. Do these foods have a high magnesium level? Also does Purina Indoor Formula have a lot of Magnesium, because before I had found he was forming crystals in his urine and had UTI, he was eating PIF. If I keep him on the dry food prescription diet, is he more likely not to develop a UTI again and crystals? Or if I switch him to wet food will that help prevent those two things even more than the dry?
The Hills script diets are specifically formulated to meet each diagnoses. This link will go over all the Hill's Rx plans: http://www.hillspet.com/zSkin_2/prod...=1177087463750
The Purina Indoor formula (http://www.catchowindoor.com/products_4.aspx
) doesnt' read too impressively, especially in light of recent recall scares (though not on the recall list at this time, I believe). I cannot decipher the mag levels off the link, but maybe another poster (Sharky?) may see this and reply.
I think if you are comfortable with that food you can certainly rotate it but I would like to see a more whole food plan, more wet foods, and food geared toward urinary tract health.
I actually have used the Purina One Urinary Tract formula with great success for a couple years. http://www.purinaone.com/products_cat_uth.asp
but you can see there are other questionable grains on there to worry about now. Cats just don't need a lot of extra processed grains.
Both magnesium and ash are key in uti health and I believe the recommended uti % are:
ASH: (5.5% to 4.5%)
MAGNESIUM: (0.095% to 0.08%)
According to this vet, best = less than 0.12%http://www.petplace.com/cats/best-lo...ood/page1.aspx
The thing is, you want a 'whole' approach. You want to incorporate as much wet food as possible, and a high degree of wet. You want to use a mid to premium range cat food, and watch the mag levels. Many say ideal for urinary tract health. They don't necessarily HAVE to unless a pet is diagnosed with FLUTD....(not to confuse you more) but it's best to just feed a high quality diet regardless. Encourage water drinking (have afew water stations available, toss in ice cubes now and then....) Cat foods with fish tend to be high in mag too.
And certainly, use the vet's recommendations with the Hill's script diet. I still use both c/d dry and canned. My only suggestion is to look at the whole approach, again. That way you cover all your bases.
And believe it or not, stress can affect urinary tract health so note if your cat has any stressors.