So, for the beef HVM here, it states No carbs. I don't know what they think blueberries, apples and cranberries have in them. Not to mention the rest of the vegetables.
( BTW I'm not trying to poke holes, I'm trying to learn about it too : )
It states 1609 kcal/kg (about 730 calories per POUND according to this calculator http://www.endmemo.com/sconvert/kcal_lbkcal_kg.php
That means, in order for the dog to get 1609 calories it needs to eat 1 kg of food a day. (1 pound for 730)
I'll have to go back to crummy American for this because that's just what i know best, lol
So my 55 lb basset hound requires 1500 calories a day (about right, and can be seen on this chart http://tails.co/requirements.html
He would have to eat two pounds of food a day, or so, to get enough calories. NOW this still does not mean biological value. This just means calories. Those are made up of fats, protein, fiber, sugars, etc. SO this does not mean he is getting enough PROTEIN. Dogs do not store and process much of this food...they need the protein and fats most. And, this says that in 1 pound, the dog is only getting 18% protein. Dogs truly need closer to 30%-50%, depending on age and metabolism.
Therefore this is just simply not the correct nutrition. It's just what looks good on paper, and, this is the most important thing....this is an OLD AND OUTDATED reference for what dogs need to survive. 18% is what the big dog food manufactures decided dogs need, NOT actually what dogs need. It just fit their production. THAT is what needs to change.
Now, it's correct that added water will change the weight. But that should make it even more clear that what you'd be feeding the dog then, is water. Far LESS nutrients and just FOOD. You'd need more and more to get a higher caloric value.
And, as stated, caloric value is different than biologic value.
There are tons of ways to google this information, this is just the first i chose. "The Biological Value (BV) is a scale of measurement used to determine what percentage of a given nutrient source is utilized by the body. The scale is most frequently applied to protein sources. Biological Value is derived from providing a measure intake of protein, then determining the nitrogen uptake versus nitrogen excretion. The theoretical highest BV of any food source is 100%. In short - BV refers to how well and how quickly your body can actually use the protein you consume.
The BV is particularly used in protein, as the body can not store excess amino acids (other main nutrients, such as fat and carbohydrates can be stored by the body). The daily diet should thus always provide enough protein, and protein of the proper quality, to fulfill the need of the body." (http://www.food-info.net/uk/protein/bv.htm
This is any health, nutritional, and some biology text books (so no fussing over web pages lol).
The bottom line is that it's too expensive for companies to really put the proper nutrition into dog food, so they just don't do it.
Again, just looking at any diagram of a dogs digestive anatomy versus a humans, shows why it is essential that they need protein, and more of it. Compared to us, they have very fast digestion, in a short digestive tract. Just that in itself says they need more of what's valuable, so they can have a chance to absorb it!
That is why 18% is just NOT enough.
Another proof, is remember how dogs cannot eat certain foods, or they get poisoned? That is because their body is made to eat prmarally protein. Excess of these foods will kill them, because their body cannot metabolize it. It's not meant to. So it's pretty silly to feed your dog tons of veggies, fruits, grains, etc. It is a waste of food. They will gain NOTHING from it, except as maybe fiber...meaning, stuff that helps move the poo out because it literally has no other value.
(here's an okay page with diagrams http://pawcastle.com/human-canine-digestive-system/
Actually....This is a short, to the point video...that is the BEST I'VE SEEN so far in my search. Please, I encourage all of you who glance at this to please watch. I don't know who this Vet is, but he is RIGHT.
From "top quality dog food page"
Moisture Maximum: 82%
Protein (crude) Minimum: 17%
Fat (crude) Minimum: 8%
Fiber (crude) Maximum: .20%
Calories 1607 Kcal/kg
Ground 80/20 Beef with our Health Variety Mix (HVM). Our HVM consists of: 7% Veggie/Fruit mix,10% Beef Heart, Liver and Kidney, Organic whole eggs, NO BONE!! The vegetables and fruits consist of equal parts: Kale, Romaine Lettuce, Celery, Carrots, Broccoli, Cauliflower, Sweet Potatoes, Blueberries, Apples, and Cranberries. Weights are approximate.