if you can get a decent supply of meat this in my opinion is the best option for feeding all working dogs and is what i feed my terriers on. i feed mainly venison mixed with green veg, pasta and brown bread. slow burning carbohydrates are important as well as protien from the meat. i have never seen a dog work to its potential on a poor diet. give them the best fuel and you wont go far wrong on condition and fitness if they have plenty of exercise.