Of greater interest to the greyhound trainer and breeder is Dr. John Kohnke's address made in Kentucky, USA, in May this year when he delivered an outstanding paper called, Feeding The Racing Greyhound. Speaking by invitation at Alltech's 18th Annual Symposium (Alltech specialises in nutritional biotechnology in the feed and food industries), Dr. Kohnke aroused tremendous interest when he described the optimum mineral, trace mineral, vitamin and electrolyte supplementation required by the racing greyhound.
Dr. Kohnke's findings, in my opinion, will be revolutionary information for most readers as they clearly show the requirements of the sedentary animal (a dog sitting around doing very little) compared to a fit greyhound racing frequently.
Here are some examples taken from Dr. Kohnke's address:
Calcium Intake:
A sedentary 30kg dog is estimated to require 357mg of calcium to maintain optimum skeletal strength. A greyhound in full race training is estimated to need 6000 to 8000mg daily. It is also estimated to add 20% more Vitamin D than N R C recommendations. Dr. Kohnke went on to say that "cereal based dry foods, even with added calcium have been associated with an increased incidence of bone fractures."
MINERALS AND TRACE MINERALS
The estimated requirement for racing greyhounds for most other minerals and trace minerals is 2-3 times higher in the racing greyhound compared to a resting dog.
B GROUP VITAMINS
"Recommendations for B vitamin intake and fortification of feed is at least three times higher than the N R C (1985), which reflects the higher metabolic rate during anaerobic exercise of a racing greyhound" N R C = National Research Council.
Dr. Kohnke describes how demineralisation of skeletal and joint structures occur as a result of high-loading athletic exercise and other factors. He also mentions the importance of adequate hydration and electrolyte replacement, especially potassium in the racing dog.
An important statement by this learned gentleman adequately sums up the need for extras in the diet.
He said, "The diet must be fortified with a large range of macro (large size) and micro (small size) nutrients to meet athletic demand and maintain body reserves, optimum metabolic function and race soundness."
THE IMPORTANCE OF VITAMIN E
I noted in the popular press earlier this year a small article about the benefits of Vitamin E after strenuous workouts and how it eases soreness and fatigue (Tufts University, Boston). The researchers believe that this vitamin acts as an antioxidant, mopping up excess free radicals (harmful substances) that can damage muscle tissue after exercise. Two groups of healthy men were involved, with the group taking Vitamin E reporting less inflammation and pain.
This report is powerful support for the use of Vitamin E, especially if combined with organic selenium (selenomethionine), in the animal athlete. Dr. John Kohnke says "of all the vitamins that are fed to greyhounds, Vitamin # is probably the one that gives most benefit to performance and stamina in racing greyhounds." The article Vitamin E….Some interesting Facts provides a great deal of information about Vitamin E. It appears in Volume 1 of The Greyhound Update, available from Natural Performance Products. For details call 02 4267 1199 or 0407 288997 during business hours.
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