Thank goodness. My living room intermittently smells like a rotting chicken!

 Quote: Scott Garrett

Thank goodness. My living room intermittently smells like a rotting chicken!

What?

You don't care for that?

The switch-gas is short-lived. Days only, as I recall.

As far as I know, all animal protein is the same -- Casein (ref The China Study by Prof Cambell). However, I agree for a different reason that there should be a variety of meats -- different meats have different content of other nutrients. Therefore, I do feed chicken, beef, and beef heart. I also feed once per week organ meats (mainly livers and gizzards).

 Quote: Simon Raban

As far as I know, all animal protein is the same -- Casein

Casein is a milk phosphoprotein.

All animal protein is definitely not the same. Protein from each source can have amino acid profiles that are different -- even, for example, depending on the source's environment. Salmon from the Atlantic has a different profile than Pacific salmon. Even Texas longhorn cattle provides beef with a different amino acid profile than milking shorthorns or Guernseys. The differences in protein profiles between, say, a wild white fish and farm-raised slaughter poultry would be even greater.

Even different organs of one individual animal's body will differ in amino acid content. Every organ as well as every species (and animals within within species) has its own individual kind of protein.

There are other significant differences even if amino acid profiles were disregarded.

 Quote: Alyssa Myracle

..... Dogs need a variety of protein sources. .... While venison is incredibly healthy for dogs, one should also feed other meat sources as well....

Yes.

Fascinating information. I always thought a cow was a cow.

 Quote: Scott Garrett

Fascinating information. I always thought a cow was a cow.

Well .... a cow is a cow.

Really? What is the source of your information? Casein is milk protein, but there is no significant difference in amino acid contents between Casein and other animal protein sources. See for example http://www.jbc.org/cgi/reprint/148/2/431.pdf and The China Study by Dr. Campbell. There is some difference between amino acid content in all muscle meats, brain tissue and organ meat. This is one reason why experts recommend to include some organ meat in diet (more importantly is the other nutrient content in organ meat such as iron and viramin A).

 Quote: connie sutherland

 Quote: simon raban

As far as I know, all animal protein is the same -- Casein

Casein is a milk phosphoprotein.

All animal protein is definitely not the same. Protein from each source can have amino acid profiles that are very different -- even, for example, depending on the source's environment. Salmon from the Atlantic has a different profile than Pacific salmon. Even Texas longhorn cattle provides beef with a different amino acid profile than milking shorthorns or Guernseys. The differences in protein profiles between, say, a wild white fish and farm-raised slaughter poultry would be even greater.

Even different organs of one individual animal's body will differ in amino acid content. Every organ as well as every species (and animals within within species) has its own individual kind of protein. ...

 Quote: simon raban

Really? What is the source of your information? Casein is milk protein, but there is no significant difference in amino acid contents between Casein and other animal protein sources. See for example http://www.jbc.org/cgi/reprint/148/2/431.pdf and The China Study by Dr. Campbell. There is some difference between amino acid content in all muscle meats, brain tissue and organ meat. This is one reason why experts recommend to include some organ meat in diet (more importantly is the other nutrient content in organ meat such as iron and viramin A).

Come on, Simon. In five weeks you come back with a paper from 1943? And it does not even include casein, one of your main topics?

And even on your 1943 reference, using the clumsiest of methods by today's standards, you will see a "significant" difference between, say, the phenylalanine in beef and in chicken (beef being 25%+ higher).

Are you seriously asking me this or is this a joke? If you seriously want an answer, I will load you with material.

Two strains of broiler chickens fed the same diet can have different amino acid profiles. Knowledge and measurement accuracy and food science in general have developed a wee bit in the last 60 years.

Farmed fish and wild fish -- same kind of fish! -- have different amino acid profiles.

If you can reply without referring to The China Study, that will open your range quite a bit. Nothing against the book, as I said earlier, and there is some new and interesting material in it (well, new in the '80s, when he went to China), but it will help you a lot, I think, to keep in mind that PETA connection, and the book's purpose, which is to "prove" (and remember his PETA agenda) that eating animal protein is not only unnecessary but counterproductive.

Regardless of one's opinions about that (and I'm a vegetarian, Simon, just so you know), this is not in any way true for dogs. So on a dog forum, talking about feeding dogs, a book with a PETA agenda about animal meat is probably less than applicable.

Again, nothing against the book or the doctor. It's interesting! But if you read nothing but that book and a paper from 1943, you will have a narrow frame of reference.