We can't get the full variety of nutrients because meat sources are generally farmed and grain fed and we can't fully replicate 'whole prey' as our dogs bred down from wolf size cannot manage digesting a large ungulate whole. Most premade raw products are made from animal parts and not the whole animal. This is why variety of proteins is emphasized- its one way to ensure that nutrition is maximized and omega 3 is supplemented because its actually missing from farmed meat.
It's necessary to have a working grasp of the principles behind how to feed this way but it also isn't rocket science- we manage to do it with our own food on a daily basis. Somehow we know how to balance what we eat without spreadsheets or having to take a course in it - but we learn a lot about this from our families and other humans. With a different species like the carnivore, we do need to understand what are the basic nutrition principles that are necessary for them- its a steep but short learning curve- Canine Nutrition Basics and Starting Raw- are a minimum reading requirement.
Feeding raw is also not just about what you feed - its also a lifestyle choice- one that you will be challenged on by your vet, other people, family members and things you read ( usually information perpetuated by kibble manufacturers). You really need to know a little more about how raw food truly impacts health and medical issues or its going to be extremely confusing when your dog gets sick and your vet (and everyone else) tells you its because you're feeding him a raw diet. This is why the reading list includes many articles explaining the many myths and typical fears about this diet. The most successful raw feeders are the ones that take the time to read, understand the information and are then confident that this method of feeding makes good sense. Understanding first principles also helps to avoid common mistakes and problems and quickly find solutions when there are problems.
When you understand that this diet is natural, nutritionally appropriate for this species and enables dogs to thrive and in many cases fight disease, you are more committed to it and have a better perspective on its value- the price of it is also the price of good health with minimal vet visits.
