Fyeball, what increases a dog's endurance and stamina up to 75% is good quality (Animal Fat). In the proper amount and increased water intake. Using only a Vegetable source of fat, for a energy source may not work as well as a animal fat source. One of the best sources is whole Chicken meat with the added chicken fat.

This is IMHO, Some will disagree with me, because many new dog men have their mind on giving their dogs high amounts of protein in excess. Super Duper supplements like many body builders over do.

The reason I liked the Chicken necks and Chicken backs were three fold. First their is a lot of Chicken fat in the skin, on and around the back. Chicken fat is at the top of the Fat list source for energy, for a dog.

Second you get plenty of good natural bone that is safer for the dog to eat than a chicken leg bone. Unless one is going to grind up the leg bone leaving no sharp pieces in it. Still not a lot of extra fat on a Chicken leg but does have more meat. Maybe instead of just the neck and back, also add a leg. I would be afraid of sharp broken pieces from a Chicken leg. Unless properly ground up.

What was used to get enough protein and balance out the protein with more animal fat was simply one or two boiled eggs. Another product that balanced out the protein, contributed to building the blood count,increased endurance and stamina. Was Desiccated liver at one to two tablespoons per main meal. It takes four pounds of raw liver to make one pound of Desiccated liver. Then their was the Debitter Brewer's yeast at one tablespoon for good digestion and natural B vitamins.

Anymore extra needed protein/carbs/fats was provided by a good quality kibble. The Kibble/ Greens also act as a filler and help soak up extra needed water in the main feed. A member on this site sent me some info about this dog food company that sold a supplemental fat source designed for dogs. Would look into that, just using Wheat Germ by itself may not be balanced enough.

V. Jackson never used any wheat germ oil or Wheat Germ, not saying a little would hurt anything. If to many various supplements that a dog does not normally eat is added to the feed keep. The food will become to rich and causes the dog to work hot or have digestive problems leading into Dehydration.

I know, because I had a body building supplement taking back ground when I was younger. I was going to make V.J.'s feed keep ten times better. Boy did I give myself a fooling, causing the loss of two, maybe three of my first matches that I might could have won. Dogs simply ran hot their whole show time. Heat and the ability for a dog to cool itself will stop one quicker than punishment. Over time I learned a dog can take a lot of cold but not a lot of heat. Cheers