pumaward
Posted : 3/4/2008 7:07:37 AM
(sorry if this is a repeat, I haven't read all the posts)
I have a cat who had developed fairly severe urinary crystals as well and another that has them on a more mild note (he simply showed symtoms more quickly than she did).
I don't know about studies, personally, but the evolution of the cat can give you some big clues. Domestic cats have a close cousin (the african wild cat?) that lives in similiar areas to where cats were first domesticated. Areas that were and are dry and arid. Cats evolved to get larger amounts of moisture from their prey items.
Enter kibble. Many cats still retain a behavior that puts them at risk for urinary problems, primarily, they don't consume enough water. One thing you can do is get a fountain for your cat, as many are stimulated to drink from moving water rather than a water dish. Second, don't give any kibble. Kibble is dry and there's no real amount of moisture to dilute problem ingredients such as those that cause crystals in cats that have alkaline urine. Hill's C/D contains a urine acidifier and that's why they can get away with dry. Other kibbles don't have this component, in general.
My "bad" cat gets NV raw medallions and they have worked beautifully at solving her problems (better than the C/D canned). Meat has both moisture an acidic properties and the medallions meet AAFCOs nutrition standards for cats (for what little that means). It's also the closest you're going to get to a natural diet for cats without going whole prey model or preparing food yourself. She's been on the raw for over a year now with no problems.
Canned is another option and I'm not sure you need anything special. Wellness turkey is a good can and it's grain free, which is a plus. Not all Wellness cat formulas are grain free so be sure to check the label, if that matters to you. Our male, whom refuses to eat raw, gets canned only. Primarily, he gets EVO forumlas, California Natural formulas, Eagle Pack, and Nature's Variety, but I'm always willing to try something new.
Finally, while you're trying to get the urine crystals under control/switching from C/D, I would look into cranberry powder. Again, it worked beautifully for us and we no longer need to add it to the cats' food.
Good Luck, whatever you choose!
ETA:
Expect to keep your cat off of dry indefinately. Their system isn't really equipped to handle it, and, therefor, old problems will eventually re-emerge.
From my experience, the water does matter as much as the food, but if you want to know the conditions of your water, including the pH, you can buy a fairly cheap testing kit from Home Depot or other department store, usually.