Protein to fats ratio; phosphorus%

What is the ideal ratio proteins and fats in a cats diet? What about
Phosphorous?

To take one example, Fancy Feast chopped grill feast that my cat loves:

According to http://webpages.charter.net/katkarma/canfood.htm

Protein= 51%, Fat= 35%,
Phosporous= 1.55%.
all presumably by weight.

According to http://www.geocities.com/jmpeerson/canfood.html

Protein= 37 %, Fat= 61%, (by Kcal)
Phosporous= 1.55% (mg/100 Kcal)

OK, so is the protein to fats ratio here good or bad or so so but
acceptable?

What about phosphorous?

Thanks.

Kiran wrote:
What is the ideal ratio proteins and fats in a cats diet? What about
Phosphorous?

To take one example, Fancy Feast chopped grill feast that my cat loves:

According to http://webpages.charter.net/katkarma/canfood.htm

I thought the whole point to the above URL was to spell out the dangers
of high phosphorus levels for her cats which died of renal failure?
Does she not emphasize that enough? 1.55% is TWICE what you want for
phosphorus. TWICE. TWICE. TWICE, I say thrice times


Protein= 51%, Fat= 35%,
Phosporous= 1.55%.

This is twice the ratio of phosphorus compared to all of the Science
Diet foods.
I prefer half this ratio, that is, 0.75%, maximum, dry matter basis
[the water removed, usually around 78% moisture for this brand, so
divide by 0.22]

Of all the Fancy Feast varieties, I found only five under 0.80%, only
five.

And the protein is a bit high although maybe okay. I prefer around 40%.
Why? Although cats are obligate carnivores, I read, half protein is
more work for the kidneys, again renal concerns [which is also the
problem with phosphorus]. In any case, no mouse or bird is 50% protein,
more like half that.

I would be afraid to continually feed my feline anything with this
ridiculously high amount of phosphorus. Yet it's in most of the typical
supermarket foods. I think this is very bad.

all presumably by weight.


According to http://www.geocities.com/jmpeerson/canfood.html

A good URL but confusing without spelling out the dry matter basis
which allows things to be compared across brands.

Protein= 37 %, Fat= 61%, (by Kcal)
Phosporous= 1.55% (mg/100 Kcal)

OK, so is the protein to fats ratio here good or bad or so so but
acceptable?

What about phosphorous?

Terrible, way too high. Double. The good foods, Science Diet, and the
rest, are half that. I am not kidding. Go to hillspet.com. All their
foods are around 0.70% and it is no accident and no accident that cats
fed foods in low phosphorus levels have low renal or kidney problems,
compared to the high phosphorus levels.

In any case, why can't we use percentages on a dry matter basis. The
mg/100kcal is probably okay and if you eyeball the data, Purina/Nestle
Fancy Feast is twice the others. But still, Dry Matter Basis percentage
is what I'm used to so I'll pass on this type of analysis. It's late.
I'm tired. And I think I answered your question. At least I tried.


Thanks.

Kiran wrote:
What is the ideal ratio proteins and fats in a cats diet? What about
Phosphorous?

Here's a webpage for the nutrient requirements:

http://www.serve.com/BatonRouge/nrc1.htm

Lauren

See my cats: http://community.webshots.com/album/56955940rWhxAe

Gaznapiro wrote:
Lauren

See my cats: http://community.webshots.com/album/56955940rWhxAe

Great pics, I liked this one the best:

http://community.webshots.com/photo/...42460320WbePqA

Thanks so much!!

I looked at the pics on your site and they are all so beautiful. I
especially liked the one of Betje. What beautiful coloring.