Tag Archives: sled dogs

Hunting dogs may benefit from antioxidant boost in diet

Free radicals, those DNA-damaging single-oxygen atoms, are produced in spades during exercise. Dogs that exercise a lot, like hunting dogs, may need to consume more antioxidants than their less-active counterparts to protect against this damage. But what diet formulation best meets the needs of these furry athletes? A new University of Illinois study provides some answers in a real-world scenario.

Hunting dogs

Researchers visited a kennel of American Foxhounds in Alabama over the course of a hunting season, providing one group a high-performance commercial diet and another group a test diet similar to the commercial diet, but with added antioxidants (vitamins C and E, and lutein), zinc, and taurine. During the study, dogs from both groups went on two to three hunts per week, each 2 to 5 hours in length.

“We think of it as unstructured endurance exercise. They’re not running the entire time. They might stop to sniff or go more slowly to pick up a scent,” says Kelly Swanson, corresponding author on the study and Kraft Heinz Company Endowed Professor in Human Nutrition in the Department of Animal Sciences and the Division of Nutritional Sciences at U of I.

Before starting the diets and on four occasions during the seven-month study, researchers took blood samples from the dogs to examine oxidative stress markers and other blood metabolites.

“We hypothesized that dogs fed the test diet would have a lower concentration of oxidative stress markers and improved performance compared to the dogs fed the commercial diet,” Swanson says. “It turns out performance wasn’t affected by diet, but the test diet did improve indirect measures of oxidative stress. Therefore, improved performance may be expected with more strenuous exercise when metabolic demands are higher.”

The amino acid taurine, once thought to be non-essential for dogs but now recognized as an important nutrient for heart health, declined over the course of the season for dogs fed the commercial diet. The same pattern occurred with vitamin E. Although one dog did come close to a critically low level of taurine during the study, all dogs fed the commercial diet stayed within the normal range for all blood metabolites.

For dogs fed the test diet, taurine and vitamin E levels were maintained at or above the baseline. The results suggest to Swanson and his co-authors that these compounds are compromised in athletic dogs over months of unstructured exercise, and more-active dogs such as sled dogs may experience greater depletion.

“We can conclude that athletic dogs may benefit from supplementation of vitamin E and taurine to minimize oxidation and maintain taurine status,” he says.

The article, “Longitudinal changes in blood metabolites, amino acid profile, and oxidative stress markers in American Foxhounds fed a nutrient-fortified diet,” is published in the Journal of Animal Science [DOI: 10.1093/jas/skx070]. Funding was provided by The Nutro Company.

Source:  University of Illinois press release

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Unseasonable weather affects the Iditarod

 Kelly Maixner's team charges out of the chute at the 2015 ceremonial start of the Iditarod Trail Sled Dog race in downtown Anchorage, Alaska March 7, 2015. Credit: Reuters/Mark Meyer


Kelly Maixner’s team charges out of the chute at the 2015 ceremonial start of the Iditarod Trail Sled Dog race in downtown Anchorage, Alaska March 7, 2015.
Credit: Reuters/Mark Meyer

It’s been an unseasonably warm winter in Alaska (unlike in Boston, which I have featured on my Facebook page a number of times since I have family and friends there).  And for only the second time in the 43 year history of the Iditarod dog sled race, the race route has had to be shifted due to lack of snow pack and unsafe conditions.

The 1,000 mile race has begun following a new route that has never been used before – starting in Fairbanks instead of Willow.

The race takes about 9 or more days to complete and will finish in Nome.

Mush!

Kathleen Crisley, specialist in dog massage, rehabilitation and nutrition/food therapy, Canine Catering Ltd, Christchurch, New Zealand

 

 

What Dog Sled Teams Can Teach Us About Leadership

Sled dogs

Dr Ivan Misner, founder of BNI, an international business networking organization, wrote this really interesting piece on leadership.  For where you work now, ask yourself – who are the leaders?

SuccessNet Online – What Dog Sled Teams Can Teach Us About Leadership

Kathleen Crisley, specialist in dog massage, rehabilitation and nutrition/food therapy, Canine Catering Ltd, Christchurch, New Zealand

The ancestral roots of your dog

A genetic study by Peter Savolainen, a researcher in evolutionary genetics at KTH Royal Institute of Technology in Stockholm, has found that dog breeds from North and South America have Asian ancestry.

The Chihuahua definitely has Mexican heritage

The Chihuahua definitely has Mexican heritage

The native breeds have 30 percent or less modern replacement by European dogs.  It had been thought, prior to this study, that when Europeans settled in the American continent their dog breeds successively replaced the genetics of the native breeds.

Savolainen’s research group, in cooperation with colleagues in Portugal, compared mitochondrial DNA from Asian and European dogs, ancient American archaeological samples, and American dog breeds, including Chihuahuas, Peruvian hairless dogs and Arctic sled dogs.

They traced the American dogs’ ancestry back to East Asian and Siberian dogs, and also found direct relations between ancient American dogs and modern breeds.

The research confirmed conclusively that the modern day Chihuahua has Mexican roots.  The breed shares a DNA type uniquely with Mexican pre-Columbian samples.

The team also analysed stray dogs, confirming them generally to be runaway European dogs; but in Mexico and Bolivia they identified populations with high proportions of indigenous ancestry.

Source:  AlphaGalileo Foundation news release

Caring for Nunavik’s sled dogs

Andréanne Cléroux, a veterinary student at the University of Montreal International Veterinary Group, is conducting a project to design and deliver a first aid guide for dogs in northern Quebec.

A family with their dog in Nunavik. (Credit: Sylvie Ricard)

“The problem relates mainly to animal health care, immunization, and dog population control,” Cléroux explains. “We wanted to create a guide that would provide basic tools for pet owners so they can provide care to their animal while waiting to contact the remote veterinary consultation service to get advice from a veterinarian at the CHUV (University of Montreal Veterinary Hospital).” 

Cléroux spent time developing the guide before travelling to northern Quebec to work on the draft with residents.  One of the challenges has been to develop a product that was good for those unfamiliar with dog care and still make it useful to mushers, who tend to know more about their dogs.

Cléroux has also created a first aid kit that includes all the necessary material to provide the care described in the manual and delivered it to several villages, with a goal to make it more widely available to all 14 communities in Nunavik.

Source:  University of Montreal press release

 

Racing dogs wear leggings to prevent injuries

Sled dogs are appearing this season wearing a spandex legging that extends from ankle to shoulder, according to a new article in the Anchorage Daily News.

The leggings protect against “chicken leg” which is a problem when snow builds up on the back of the leg and balls up, eventually pulling the fur out, leaving raw spots that are prone to infection.

Dogs competing in the Yukon Quest International Sled Dog Race are amongst the first wearing the new invention, which has received praise from the head veterinarian in the competition.

Isn’t it great to see new products coming on the market that help dogs?

Sled dogs from Vancouver Olympics murdered

The Winter Olympics in Vancouver officially were closed on 28 February 2010. Less than a year later, news has broken that 100 healthy sled dogs were brutally murdered because tourism had dropped off post-Olympics.

More shocking is that the murders have only come to light after the worker who shot and, in some cases slashed the throats of the dogs, filed a worker’s compensation claim for post-traumatic stress disorder and depression.

Attorney Corey Steinberg told Vancouver radio station CNKW “It wasn’t always a clean, one-shot kill. Inevitably, (the employee) ended up seeing and having to put the end to some horrific scenes.”

The SPCA is investigating.

Read more here.

Kathleen Crisley, specialist in dog massage, rehabilitation and nutrition/food therapy, The Balanced Dog, Christchurch, New Zealand