no, actually its the opposite, the meat HIGH in fat is better. its the fat soluble vitamins A and D that is IMPOSSIBLE to get from any vegetable source. there is not vegetable source for these absolutely critical nutrients. they say carrots are high in vitamin A, but no, they are high in beta caratene, which is NOT vitamin A.
A adn D are the activator nutrients, they are the nutrients that allow you to utilize the minerals. without them its very hard for the body to actually use the minerals you eat. read the weston price articles chava linked to you above.
also read up on bone broths on the weston price website, they are a VERY energizing and bioavailalbe source of nutrients.