Hi NectarMom –
If Darwin’s telling you the fat levels aren’t what I told you then they’re likely trying to give you the “unconverted” fat levels. To obtain the true fat level it’s necessary to convert the fat to a dry matter basis (same goes for protein) – to get an accurate representation of the nutrient values this is especially crucial for foods with high levels of moisture (raw and canned). Darwin’s general analysis states that the food has 7% fat, but the food is 74% water (this means the fat levels are much higher they’re just diluted by the water). To calculate you first need to determine the percentage of dry matter, we’ll do this by subtracting the wet matter from 100%: 100% – 74% moisture = 26% dry matter (this means that for every 100 g. food you feed 74 g. are water and 26 g. are actual food, this is why the fat levels appear lower than what they actually are on the general analysis). Next, we divide the “as fed” fat level provided on the general anlysis by the percentage of dry matter we just calculated: 7% fat/26% dry matter = 0.26923. We now want to convert this value to a percentage: 0.26923 X 100% = ~27% fat. This is the only accurate way to truly compare fat levels because for example, the fat levels for kibble are practically on a dry matter basis. Kibble is generally only 10% moisture so if the fat level is, say, 15% on an as fed basis the “true” fat level is 17% (doesn’t change much). I hope all that makes sense.
My question is this – did Darwin’s tell you the fat levels I stated were higher that what the actual fat levels after you told them your dog got pancreatitis? They should have a general analysis with all the nutrient values on a dry matter basis and to try and fool you into believing what I told you is not accurate – especially after when you have a dog with pancreatitis – tells me they’re either 1) clueless or 2) trying to be deceptive in an attempt to sell food. I’m not a fan of Darwin’s customer service so neither would surprise me.
I’m going to have to agree with Patty – use a pre-mix and make your own food using extra lean ground turkey. Steve Brown has a great balancer powder that’s specifically designed to balance the fats in poultry (seespotlivelonger.com).
