Purina UR cat food

My cat Muffin has history of struvite crystals with several total blockages. In May he was diagnosed with liver cancer and hyperthyroid. After his surgery, the vet wanted to take him off Hill's dry and put him on a wet food diet. He would finally eat the third wet food we tried, which was Purina UR.
However, sometimes, in spite of all I could do, he would refuse to eat unless I gave him the dry kibble. I fed it to him until it was about to be gone and the vet wanted him to eat the Purina UR if he had to have a dry. I now have him eating a combination diet of the wet and dry. I didn't notice any change in the litter box when he ate the wet and the Hills. But since he is now eating the total diet of Purina UR wet and dry, I am seeing far more wet clumps in the litter box. Does anyone know if this food will make a cat urinate more.

No clue. Do you know if he's drinking more water? Is the volume total the same and he's just peeing more frequently? Or the volume of pee has gone up?

The salt component of the dry food seems much higher on the list... (being before the list of vitamins/supplements, vs the wet food, where it's after the list of supplements starts). So the dry may make him thirstier (with a higher sodium component), so he drinks more water.

http://www.purinaveterinarydiets.com/Product/URUrinaryStOxCatFood.aspx

Dry ingredients: Corn gluten meal, chicken, poultry by-product meal, brewers rice, oat fiber, wheat gluten, whole grain corn, animal fat preserved with mixed-tocopherols (form of Vitamin E), salt, animal liver flavor, phosphoric acid, dried egg product, calcium carbonate, potassium chloride, fish oil, choline chloride, taurine, zinc sulfate, Vitamin E supplement, ferrous sulfate, manganese sulfate, niacin, Vitamin A supplement, calcium pantothenate, thiamine mononitrate, copper sulfate, riboflavin supplement, Vitamin B-12 supplement, pyridoxine hydrochloride, folic acid, Vitamin D-3 supplement, calcium iodate, biotin, menadione sodium bisulfite complex (source of Vitamin K activity), sodium selenite.

Wet Ingredients: Meat by-products, water sufficient for processing, liver, chicken, poultry by-products, rice, calcium gluconate, oat fiber, guar gum, sodium bisulfate, potassium chloride, caramel color, carrageenan, salt, taurine, Vitamin E supplement, calcium phosphate, zinc sulfate, thiamine mononitrate, ferrous sulfate, manganese sulfate, Vitamin A supplement, pyridoxine hydrochloride, copper sulfate, niacin, Vitamin B-12 supplement, riboflavin supplement, calcium pantothenate, menadione sodium bisulfite complex (source of Vitamin K activity), Vitamin D-3 supplement, folic acid, potassium iodide, biotin.

LDG said:

No clue. Do you know if he's drinking more water? Is the volume total the same and he's just peeing more frequently? Or the volume of pee has gone up?
The salt component of the dry food seems much higher on the list... (being before the list of vitamins/supplements, vs the wet food, where it's after the list of supplements starts). So the dry may make him thirstier (with a higher sodium component), so he drinks more water.
http://www.purinaveterinarydiets.com/Product/URUrinaryStOxCatFood.aspx
Dry ingredients: Corn gluten meal, chicken, poultry by-product meal, brewers rice, oat fiber, wheat gluten, whole grain corn, animal fat preserved with mixed-tocopherols (form of Vitamin E), salt, animal liver flavor, phosphoric acid, dried egg product, calcium carbonate, potassium chloride, fish oil, choline chloride, taurine, zinc sulfate, Vitamin E supplement, ferrous sulfate, manganese sulfate, niacin, Vitamin A supplement, calcium pantothenate, thiamine mononitrate, copper sulfate, riboflavin supplement, Vitamin B-12 supplement, pyridoxine hydrochloride, folic acid, Vitamin D-3 supplement, calcium iodate, biotin, menadione sodium bisulfite complex (source of Vitamin K activity), sodium selenite.
Wet Ingredients: Meat by-products, water sufficient for processing, liver, chicken, poultry by-products, rice, calcium gluconate, oat fiber, guar gum, sodium bisulfate, potassium chloride, caramel color, carrageenan, salt, taurine, Vitamin E supplement, calcium phosphate, zinc sulfate, thiamine mononitrate, ferrous sulfate, manganese sulfate, Vitamin A supplement, pyridoxine hydrochloride, copper sulfate, niacin, Vitamin B-12 supplement, riboflavin supplement, calcium pantothenate, menadione sodium bisulfite complex (source of Vitamin K activity), Vitamin D-3 supplement, folic acid, potassium iodide, biotin.

Click to expand...

I am paying closer attention to him overall now. I have another cat and they both sleep together in the garage at night. So I would have to separate him to tell for sure if he is the one doing it. Both cats are acting fine and I didn't notice anything until he started with this food. But I am watching the water supply and keeping him on the porch some during the day alone so I can determine if he is drinking more. I know the dry is not as good if he were eating all wet. I just haven't been able to make it happen. He has been through so much getting over cancer surgery and taking thyroid meds that I hate to do much I don't have to. I am trying to hold the dry until I am certain he is absolutely not going to eat the wet.

Yeah, there comes a point when what they eat is not as important as how much, or if they're enjoying it. :nod:

If he's drinking more water because of a higher salt level in the dry (which I'm not at all certain is the case), then it may really not be an issue.