Protein to fats ratio; phosphorus%

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Kiran - 12 Jun 2006 21:40 GMT

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.

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treeline12345@yahoo.com - 15 Jun 2006 02:16 GMT

> 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)
[quoted text clipped - 3 lines]
>
> 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.

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treeline12345@yahoo.com - 15 Jun 2006 15:23 GMT

> 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'll take back that "no mouse or bird is 50%." I had read half that in
this newsgroup before. I thought I read that in a post by Phil P. but I
probably made a mistake. He usually got his facts correct. If the
reference below is correct, then it's around 57% protein. Don't know
for sure unless double-checking the facts. But it seems more accurate
that what I read here a while ago. And it's possible I remember
incorrectly.

http://www.catnutrition.org/nutritionbreakdown.html

"If you're interested, an adult mouse is roughly 67 percent water, has
a calcium-to-phosphorus ratio of 1.1:1, has 3 percent carbohydrates,
consists of about 57 percent crude protein, and contains 23 percent
fat.2"

2 Profiles of nutrient composition of whole vertebrate prey, excluding
fish (fed in zoos), May 29 2002, conducted by Ellen S. Dierenfeld, PhD
(Animal Health Center, Wildlife Conservation Society, Bronx NY),
Heather L. Alcorn (Dept. of Animal Science, Cornell University, Ithaca
NY), and Krista L. Jacobsen, MS (Animal Health Center, Wildlife
Conservation Society, Bronx NY).

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PawsForThought - 15 Jun 2006 15:49 GMT

> 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

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Gaznapiro - 15 Jun 2006 16:15 GMT

>> What is the ideal ratio proteins and fats in a cats diet? What about
>> Phosphorous?
[quoted text clipped - 6 lines]
>
> See my cats: http://community.webshots.com/album/56955940rWhxAe

Great pics, I liked this one the best:

http://community.webshots.com/photo/56955940/1056987444042460320WbePqA

;-)

Signature

Gaznapiro
http://orphanedkittens.kruimelhuis.nl/

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PawsForThought - 15 Jun 2006 22:52 GMT

> Lauren
> >
[quoted text clipped - 3 lines]
>
> http://community.webshots.com/photo/56955940/1056987444042460320WbePqA

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.

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Gaznapiro - 15 Jun 2006 23:10 GMT

>> Lauren
>>>
[quoted text clipped - 5 lines]
>
> Thanks so much!! :)

Your welcome ;-)

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

It is not my site, but the site of a friend. She raised orphaned
kittens for years in The Netherlands.

I'll pass your compliment on to her. Thank you ;-)

Signature

Gaznapiro
http://orphanedkittens.kruimelhuis.nl/

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