I've looked at a number of threads on fat-to-protein ratios and this seems to be about the best thread. On one of the other threads someone suggested that animals just eat, they don't worry about what the fat content is but I have read information to the contrary. What I have discovered is that I am very sensitive to carbs and fat. Carbs make me sluggish, inflame my damaged hip, and affect my skin negatively. With low carbs I am better able to sense my body's response to the foods I eat. The more fat, the better I feel. Even when I had no control over my diet I found that with moderate fat meals I had to add a few tablespoons of mayonnaise to alleviate sensitive teeth.
What I was hoping to find was how to manipulate the fat content in a raw animal diet. I couldn't seem to find an answer to this anywhere so I figured out the following which gave me rough proportions of fat to add to sirloin or round beef which has all visible fat removed. Of course there is no such thing as pure protein but trimmed sirloins and round beef are as close as it gets . . .
. . . from which I found that it takes ? 4 measures of fat to 1 measure of lowest-fat meat to be in the vicinity ratio of 90+% fat to <10% protein values.
It would be great if someone really conversant in maths or who has found a relevant formulae site would note them in this thread.
Accordingly, ground beef is typically 70 percent lean, ground chuck is 85 percent, ground round is 90 percent and ground sirloin is 97 percent lean. (University of Wisconsin Food & Safety Department) Read more:
http://www.livestrong.com/article/526300-how-to-calculate-fat-from-meat/#ixzz20csCfwi3Here are the rough proportions for fat to protein for meats with visible fat trimmed if you are going to be mixing fat with meat for a ketogenic diet, high fat diet or other plan. (Protein was kept as the constant at 1 measure (or weight) per variable measure of fat.) As noted, there is still going to be some fat in the beef so these are the minimal possible ratios of fat to protein. I mix suet (which is raw beef fat) with my meat. When I am short of suet I use home rendered lard.
Fat% (ratio of fat to protein)
90% (4f:1p) 4 measures fat (suet) to 1 measure protein
85 (5:2) (2½:1)
80 (9:5)
75 (4:3)
70 (1:1)
60 (2:3)
53 (1:2)
50 (?1:2) (4 ½:10 is more accurate)
40 (3:10)