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GREYHOUND ATHLETE

January 18th, 2019
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VET NEWS
By John Konkhe
Reprinted courtesy Greyhound Star

Some people are fascinated by the horsepower, cornering dynamics and top speed of a fast car, the climb speed and maneuverability of a fighter plane, or endless records broken at last year’s Olympic Games.

But is there a limit to athletic performance?

Having been a greyhound vet and admirer for 20 or more years, I am awed by the specialised running machine and athlete we call a racing greyhound. So, in this article, I thought I would gather a few statistics on the greyhound as an athletic and physiological marvel for those who are equally fascinated by this lovable, elite breed of dog.

Over the past 20 years, starting with Dr Ross Staaden in Perth who ran greyhounds on a high speed treadmill to measure their energy and oxygen use, heart rates and other physiological parameters, until today with Dr Robert Gillette of Alabama University in the USA, measuring stride lengths, galloping patterns and weight forces, we have gained an insight into how a
greyhound functions as a finely tuned and well adapted canine athlete.

The statistics below illustrate the adaptation of the greyhound to the high speed chase.

The figures are based on the average 30kg greyhound, at the peak of fitness and obviously injury free.

Energy Use

In the first 7.5 seconds of a 30-second race, a greyhound metabolises high energy creatine and glycogen stores in its muscles without the need for oxygen.

It uses the creatine energy base during the first 3.5 seconds acceleration phase to the first bend of a standard circle track.

In fact, a greyhound expends half of its total energy used in a race for this acceleration stage.

However, surprisingly greyhounds and even racing sprint horses performing for less than one minute expend in a race only about 6% of their total energy intake required each day to meet the exercise needs in training.

Acceleration Speed

At maximum acceleration, a greyhound reaches a full speed of 70 kmh within 30 metres or six strides from the boxes, traveling at almost 20 metres per second for the first 250 metres of a race.

The only other animal that can accelerate faster over a short distance is a cheetah that can reach speeds of 109 kmh over 3-4 strides from a standing start.

The greyhound can maintain an average speed of 16.45 metres per second over a 500 metre race, decreasing to around 14.6 metres per second as it crosses the finish line.

A thoroughbred racehorse can achieve a maximum speed of around 49 kmh or 13.6 metres per second.

An elite human sprinter can reach 40kmh in a 10 second sprint race at an all out speed of 11 metres per second.

The muscles of a greyhound generate 75-80% of their power from anaerobic metabolic pathways during a 30 second race.

In distance races, or coursing trials in excess of 40 seconds duration, 80% of the total energy in the final half of the race or gallop is metabolised using oxygen.

The Heart

In a racing greyhound, the heart output increases from about 200mL per kg body weight per minute at rest to over 1000mL per kg at the full gallop. A greyhound circulates up to 15 litres of blood around its body, or half its own body weight in a 30 second-race.

A racing greyhound circulates its entire blood volume between 4-5 times during a 30 second gallop.

These figures equate to a greyhound pumping its entire blood volume of around 3.4 litres up to 4-5 times around its body during a 30 second gallop. A greyhound’s heart weight ranges from 1.18 to 1.73% of body weight, or 270 grams to 519 grams for a 30kg greyhound, which is higher than an elite racehorse at 1.0-1.3% of its body weight.

Other breeds of dogs have a heart weight equal to 0.77% of their body weight, compared to 0.5% for humans.

An average 70kg human athlete has a heart size similar to a 30kg greyhound, but the greyhound’s heart delivers blood at almost twice the rate, beating at 310-340 beats/minute at the gallop, compared to humans at 170.210 beats/minute.

Blood Volume

A fit greyhound has the highest blood volume of any athlete, relative to its body size, with blood contributing 11.4%, compared to 10.5% for a racehorse, 9.5% for a human sprint athlete and 7.2% for a normal pet dog.

A greyhound has around 35 x 1012 red blood cells in its body, producing around 5 million replacement red cells per second in its bone marrow and spleen.

A fit greyhound has about 3 litres of blood consisting of around 2 litres red cells, or about 6.6% of its body weight or a PCV of 60% of blood volume. A racehorse has a blood volume of around 55 litres, but a PCV of around 40% when fit, or 4.4% of its body weight.

Track Contact

At a gallop, a racing greyhound is only touching the track surface for 25% of its stride distance, and during the remainder of the stride, it is suspended above the ground until the next limb hits the ground.

Up the straight, a greyhound carries 2.26 times its body weight on the weight bearing front limb at each stride, increasing to 5 times (or roughly 150kg) in downward weight force on its left inside front limb when leaning over around a sharp bend on the track.

A greyhound has a stride length of around 5 metres making 4 strides per second as it accelerates from the traps, decreasing to 3.25 strides per second up the home straight, with each limb touching the ground for about 0.11 seconds.

The forelimbs have a flight distance (off the ground) of 1.23 metres, and the rear legs 2.45 metres or double the distance.

Wrist/Bone Joints

The wrist joint bones on the front limbs sustain pressure of 500psi or 20,000 newtons per square cm when cornering at the gallop.

The wrist and lower limb structures withstand up to 150kg of downward pressure when galloping around a corner, which is created by the centrifugal force in proportion to the speed of the greyhound and the radius of the track circle.

This sideways force is imposed on the greyhound’s front limb on the second stride into the corner and if the track surface is unstable or shears, the outward flinging force causes increased sideways pressure on the joint, which can result in injury to the wrist.

Respiratory & Blood Pressure Dynamics

A greyhound draws in 60-90 litres of air in 50-90 breaths in a 30-second gallop, extracting 1500 mLs of oxygen from the air to metabolise the energy in its muscles.

During the gallop, the blood pressure in the lung arteries increases from 7 mm mercury pressure units at rest, to 40 units at the gallop, similar to the pressure peak in a human athlete, but only one third of the maximum pressure in a racehorse’s lung artery, which reaches 120 mm mercury pressure, or roughly 2.1 psi of pressure.

A greyhound produces around 100Kcals or 100,000 watts of waste heat energy during a 30 second race, sufficient to bring 600mL of tap water to the boil in around 2 minutes.

After a race, the gut function is restored over a 30 minute period to digest food, but the immune system is depressed for 30-120 minutes after a hard gallop.

Loading stress placed on the limb bones is repaired over a 7-10 day period after a race.

What a dog !!!!!!!!

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Greyhound people: Robert Parker

April 20th, 2018
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When and how was you involved in Greyhounds?
Used to be involved in horse racing, won French Champion Hurdle twice, went with a friend to a Greyhound auction at Hackney – knew nothing about dogs, but bought one named Daytona Bay £70 (Dougle to his friends) and took him home, won many opens over long distances.

Where are you located?
I am now located in Lincolnshire, UK.

Who is the Greyhound you remember the most?
Daytona Bay, without him I would never have got involved with dogs.

What was your biggest succes regarding Greyhounds?
I have won every Classic and Cat. 1 races, incl. the Oaks twice, St. Leger, TV Trophy, Golden Jacket, etc. I have had 3 Derby finalists, the best I was involved with I suppose Tico who won the Pall Mall and the Derby – bought him after watching him race at Clonmel. The fastest: a dog called Dayleys Gold who was acknowledged as fastes EP dog in country, won Scurry and Laurels and several other top races, did not quite stay Derby distance.

Did dogs changed your life? If so in which direction?
They did as I began to realise: the best dogs came from Ireland, and started up an agency selling dogs, and was I suppose acknowledged as the top greyhound agent in the country. Went on to be involved with various tracks, including buying Hackney for 17 million, unfortunately all ended in tears and huge loss of money.

Plans for the (near) future?
Stay alive and fight the cancer I have.

What do you think about a racing system where no prize moneis are given? Would you still involved?
Not nowadays but one track I owned Edgeware Straights – had a system were everyone paid an entry fee for each race, from £5 to £500 and the winner took all, was very successful.

What are the main problems – in your opinion – in Greyhound racing right now?
Main problem in Greyhound racing at moment is most tracks are owned by bookmakers and look at it as glorified roulette, the other big problem is that the people running the sport are unelected, disliked and pretty clueless a bit like Sepp Blatter at FIFA.

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Promising Greyhound pups

March 5th, 2017
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Promising Greyhound pups

Hungary, near Budapest:
Csontrakéta Rapid Penge x Fridays Fortune
Born on the 29th June 2017
Pedigree
More information: https://www.facebook.com/Cserihegyi/
or cserihegyi.com

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Official MAVE website – CHANGES!

January 13th, 2017
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A raba-agar.hu 2017-től már nem a Magyar Versenyagár Egyesület (MAVE) hivatalos weboldala, a MAVE 2016. december 30-ai vezetőségi ülésén hozott döntésnek megfelelően.

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Puppy-Veteran Coursing Derby 2016

October 22nd, 2016
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NEVEZÉSI FELHÍVÁS

Magyar Versenyagár Egyesület
CACL, Kölyök Coursing Derby + Veterán Coursing Derby

Helye: Alsónémedi, Agárpark
Ideje: 2016. 11. 05. SZOMBAT

Nevezési cím: coursingnevezes@gmail.com (Nevezési határidő: 2016. 10. 31. hétfő éjfél)

Agarak bejelentkezése: 9:15-től 9:45-ig
A coursing kezdési ideje: 10 óra

Coursingbírók:
Lugosi Andrea (HU)
Gálik István (HU)

Lebonyolítás:
A Kölyök Coursing Derby-n a 2014. október 1-én vagy azután született (de minimum 11 hónapos), tréningfüzettel vagy licenckönyvvel rendelkező agarak indulhatnak (tehát licenc nem szükséges, de legalább egy igazolt tisztán futott társas futam igen). A „Veterán Coursing Derby” alsó korhatára angol agaraknak 5 év, az összes többi fajtánál 6 éves kor; a felső korhatár: az a szezon, amikor az agár a 8. életévét betölti.
A „Kölyök Coursing Derby Győztes” és „Veterán Coursing Derby Győztes” címet magyar és külföldi agár egyaránt elnyerheti. A Derby-ken kanok és szukák együtt versenyeznek (akkor is, ha az adott fajából 6 szuka és 6 kan indul). Ha egy fajta esetében mindkét nem figyelembevételével összesen kevesebb, mint 6 agár indul, győztes címet elnyerni nem lehet. Ebben az esetben azonban a versenyvezető és a zsűri közösen dönthet a cím kiadásáról, ha a körülmények ezt indokolttá teszik. Ha egy fajtán belül négynél kevesebb agár indul, az adott fajtában nincs verseny MAVE címversenyen.
A coursing versenyen a MAVE Teljesítményvizsgálati Szabályzata az irányadó, a CACL cím kiadása a Szabályzat 8. pontja alapján. A CACL címre jogosító kiállítási eredményt kérjük a nevezési laphoz csatolni (ennek hiányában a címet nem áll módunkban kiadni)!

A coursing versenyen csak előre lejelentett licencfutamokra van lehetőség!

Nevezési díjak: az első agár 5.000 Ft, minden további agár nevezési díja 4.000 Ft. Licencfutam: 1.000 Ft/agár. Nem MAVE/MEOESz tagoknak ezek duplája. Az érvényes tagság meglétét kérjük igazolni, illetve a tulajdonjogot az eredeti származási lapok bemutatásával!

Díjazás: „Kölyök Coursing Derby Győztes 2016”, illetve „Veterán Coursing Derby Győztes 2016” feliratú zöld színű takaró az 1. helyezettnek, trófea a 2-6. helyezettnek.

A nevezési lap elküldésével a tulajdonos vállalja, hogy a nevezési díjat abban az esetben is befizeti, ha kutyáját a versenyen nem indítja el. Helyszíni nevezés nincs!

NEVEZÉSI LAP:
Tulajdonos neve:
Irányítószám + város:
Utca + házszám:
Telefonszám:
E-mail cím:
Kutya neve:
Fajtája:
Neme: kan – szuka
Törzskönyv száma:
Születési dátum:
Licenszkönyv száma:
CACL címért fut: igen – nem
Versenytípus: CACL verseny – Veterán Derby – Kölyök Derby – licencfutam

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MAVE Bajnokság 2016

September 30th, 2016
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Bírói képzések

August 15th, 2016
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A MEOESz Magyar Versenyagár Egyesület vezetősége kanyarbírói, coursing bírói és versenybírói vizsgát hirdet.

Tájékoztató letölthető itt:

>> Bírói képzések 2016 (1126)

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CACL Hungarian Coursing Derby 2016

August 2nd, 2016
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ENTRY INFORMATION

Hungarian Sighthound Club (MAVE)
CACL + Hungarian Coursing Derby

Place: ALSÓNÉMEDI – Sighthound Park

Date: 2016. 09. 03. Saturday

Entry address: coursingnevezes@gmail.com
ONLINE ENTRY: http://www.raba-agar.hu/online-nevezes/
(Entry deadline: 2016. 08. 29. Monday midnight)

Check-in: from 9:00 to 9:45
Start of coursing: 10:00
Distance: 700 meters
Terrain: flat, sand ground with natural grass

Coursing leader: Gyóllai Emese

Coursingjudges:
Molnár Ágnes (HU)
Peter Dömény (SK)

Regulation: MAVE Regulations for National Sighthound Races and Lure Coursing events.
Participation CACL: For CACL title, at the minimum age of 15 months, the dog must have earned a grading not lower than “very good” on a dog show. Proof of the qualification obtained has to be attached to the coursing entry form. (A CACL can only be awarded to a sighthound which has achieved at least two thirds of the possible total points.)

Dogs and bitches run and compete together (even if there are enough sighthounds for separately runs). The “Hungarian Coursing Derby Winner 2016” title may win by Hungarian or foreign sighthound equally. The condition of giving the title and the champion blanket is minimum 6 starters from the breed.

Training or hobby coursing category is not available – only license runs!

Entry fee: 25 € per dog (the 2-3. dog of the same owner: 20-20 €, from the 4th dog: free). With MEOESZ/MAVE (Hungarian Kennel Club) membership: first dog 5.000 Ft, the 2-3. dog of the same owner: 4-4.000 Ft, from the 4th dog: free. Price of license run: 7 € or 2.000 Ft per dog, per run.

Prizes: “Hungarian Coursing Derby Winner 2016” labeled blue champion blanket for the 1st placed sighthounds, trophies for the podium placements.

The entry puts you under the obligation to pay the fee. No entry on spot!

ENTRY FORM:
Owner:
ZIP code + city:
Street + house nr.:
Phone nr.:
E-mail:
Name of dog:
Breed:
Sex: dog – bitch
Date of birth:
Pedigree nr.:
License nr.:
Chip nr.:
CACL title: yes – no
Type of race: Coursing Derby – license run
MEOESZ/MAVE membership: yes – no

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Nemzetközi Magyar Bajnokság CACIL pontszerző pályaverseny 2016.05.28.

May 27th, 2016
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FCI Coursing Európa-bajnokság 2016

April 5th, 2016
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