How can horse owners restrict weight gain, prevent laminitis during time of inactivity and extended turnout?

New research from Great Britain shows that a pasture management system known as strip grazing can help prevent weight gain in horses this spring. Horse owners are advised to heed warnings about weight gain and laminitis risk if quarantine conditions are reducing exercise and increasing turnout time for inactive horses.

Shoeing Rule Change in Great Britain: Racehorses Must Be Fully Shod

On Friday, the British Horseracing Authority (BHA) announced a change to its rules determining how racehorses must be shod in order to race in Great Britain. In this case, the rule change was about the fact that the horses must be fully shod, in the first place.

Grass's (Missing) Link to Laminitis: Hormonal Imbalance Sets the Stage for Disease

For years, laminitis has been characterized as a disease of the horse's foot. Treatment has centered on relieving pain to the foot and facilitating healthy new growth. But just as important is understanding what caused the laminitis to occur and treating laminitis as a disease of the entire horse, not just the feet. (HC Biovision photo of a laminitis-ravaged horse foot by Dr. Christoph von Horst)

Just when you thought laminitis research was starting to make some sense, the landscape changes. If you haven't been keeping up with laminitis research for the past few years, you've missed grass being given a get-out-of-jail-free card for its lack of a direct role in causing laminitis.

What Do Laminitis and Wimbledon Have in Common?

Lush grass at Wimbledon is being blamed for the literal downfall of several players this year. This much higher casualty rate is blamed on the late spring, which is keeping the grass so lush at the end of June. According to a British newspaper article, Wimbledon's high-sugar grasses are also more slippery than non-lush grass.

Grass Laminitis: What You Don’t Know Can Hurt You (and Your Horse) and Surprise the Researchers

New ad promo and publicity from Boehringer-Ingelheim Vetmedica perhaps oversimplifies grass laminitis. But it might get the attention of horse owners.

When it comes to laminitis, I feel like a whirling dervish: what’s going on in Australia, what’s going on in Europe? what’s going on here in the USA? (whirl)

Laminitis: Obese Horses and Ponies in Greater Danger

by Fran Jurga | 7 May 2009 | Fran Jurga's Hoof Blog

A British study has examined the factors that affect the likelihood of recovery from grass-related laminitis, and concluded that obese horses are more likely to die.

In the study, members of the British Equine Veterinary Association (BEVA) documented cases over four years and found that when overweight horses develop grass-related laminitis, they tend to have more severe signs than those of optimal weight.

Reporting on the study conclusions, principal investigator and veterinary surgeon Celia Marr said “When (grass-related) laminitis does occur, overweight animals are more likely to die of the disease than their thinner counterparts. The animals with the best outcome tended to be those that had received acepromazine, a drug that improves the blood supply to the feet and relaxes the animal."

Marr's advice to horse owners: "Horse owners and vets are encouraged to ensure that horses and ponies are not allowed to become excessively fat as this can have a significant effect on their health, as we have seen in this study.”

Summary points of the study:

1. 107 cases of acute pasture-associated laminitis were recruited from first-opinion veterinary practices to study factors associated with clinical severity, survival and return to ridden exercise.

2. Of the horses in the study, 83 percent were overweight and there was a trend towards severe laminitis cases having a higher Body Mass Index (BMI).

3. Eight weeks after disease onset, 95% were alive.

4. Lower body weight, optimal body condition, mild rather than severe laminitis and acute/chronic founder were significantly associated with survival.

5. The clinical outcome was judged by a panel of three veterinarians as good in 72% of cases.

6. The clinical outcome was significantly associated with horse type; outcome was bad in none of the small horses compared with 34.1 percent of large ponies/cobs, 32.4 percent of small ponies and 30.0 percent of large horses.

The study was sponsored by the British Veterinary Association Animal Welfare Foundation (BVA AWF) and Merial Animal Health.

Hoof Blog note: Please remember that this study relates only to horses with pasture-type laminitis. There are several types of laminitis and perhaps one thing this study does is accentuate the differences in expectations that horse owners may have in their horses' recovery chances.

© Fran Jurga and Hoofcare Publishing. No use without permission. You only need to ask. Fran Jurga's Hoof Blog is a between-issues news service for subscribers to Hoofcare and Lameness Journal. This blog may be read online at the blog page, checked via RSS feed, or received via a digest-type email (requires signup in box at top right of blog page). To subscribe to Hoofcare and Lameness (the journal), please visit the main site, www.hoofcare.com, where many educational products and media related to equine lameness and hoof science can be found. Questions or problems with this blog? Send email to blog@hoofcare.com.

Grass Laminitis: Something Else to Blame on Global Warming?

by Fran Jurga | 26 March 2009 | Fran Jurga's Hoof Blog

This pony is demonstrating the typical stance of a horse that is in pain from laminitis. It is stretching its legs out in front to get weight off painful hoof tissue in the toe area. (Photo courtesy of World Horse Welfare)

Spillers, the British feed manufacturer, thinks the answer to that question in the title might be “yes!”

I checked today, and the store on the corner still has rock salt, windshield fluid and ice scrapers on display when you walk in the door. But I'm sure it is getting to be spring somewhere. And I'm anticipating that the flower seeds, suntan lotion and seasickness remedies will be on the shelves here any day now--evidence that winter has finally passed. The only more sure sign of spring will be the first case of laminitis. But I can wait on that one.

In an interesting press release, Spillers warned British horse and pony owners of the impact that climate change could have on horses and ponies prone to laminitis, and their theory is as valid on this side of the still-icy Atlantic as it is in Britain.

"Winter" grass laminitis is a new way of looking at things, but it does make some sense...except around here, of course, the grass was very safely buried under many feet of snow most of the last four months!

Here’s the idea, as put forth by Spillers:

As if it's not bad enough already, in the coming years, laminitis really could be the single biggest risk to a horse’s health. The climate is changing and the seasons are beginning to merge into each other. Milder, wetter winters are countered by unpredictable summers that bring about flooding or droughts--and all this can have a severely detrimental effect on the way that grass grows and the "sugar" it contains.

Horses and ponies are designed to eat a variety of grasses, plants and shrubs that are typically of low nutrient value and in particular are lower in soluble carbohydrate ("sugar"). But the pasture that we keep horses on today tends to be much richer. With our milder winters too, grass may be growing all year round now. Recent research worryingly suggests that the nutrient value of winter grass in Britain is now very similar to spring/summer grass in years past.

Laminitis is now a real risk throughout the whole year.

Clare Lockyer, nutritionist and research and development manager at Spillers says: “Don’t ignore the predisposing signs in your horse or pony, such as a cresty neck, sore feet or a change in hoof shape, as these are all warning signs. It is at this time that you have the chance to take preventative action because waiting until it happens could prove disastrous for your horse.”

If you think a horse or pony could be prone to laminitis, it is sensible to provide or recommend a high-fiber, low-starch, low-sugar, low-calorie diet...and more exercise.

Thanks to Spillers for sharing that cheerful news.

Want to know (a lot) more about laminitis? Click here for a free download of the Australian Equine Laminitis Research Unit and Dr. Chris Pollitt's 34-page discourse What Causes Equine Laminitis? The role of impaired glucose uptake as provided by the Rural Industries Research and Development Corporation of the Australia government.

© Fran Jurga and Hoofcare Publishing. No use without permission. You only need to ask. Fran Jurga's Hoof Blog is a between-issues news service for subscribers to Hoofcare and Lameness Journal. This blog may be read online at the blog page, checked via RSS feed, or received via a digest-type email (requires signup in box at top right of blog page). To subscribe to Hoofcare and Lameness (the journal), please visit the main site, www.hoofcare.com, where many educational products and media related to equine lameness and hoof science can be found. Questions or problems with this blog? Send email to blog@hoofcare.com.

Autumn Laminitis Warning: Restrict Grazing During Fall Months When Grass Risk is as High as Spring

(The following health alert was received from Spillers Feed/Waltham Trust and is not an original post.)

We all know that spring is a dangerous time for laminitis but it is important to remember that the second flush of grass in autumn can be just as risky. We get numerous calls during the autumn from worried owners wanting to know what they can safely feed laminitis prone ponies and how to manage those that have suffered a further attack.

Laminitis is second only to colic as the most common reason for presenting a horse for veterinary treatment. In a recent study in the UK it was found that over 1 in 10 horses were affected by laminitis with a greater prevalence during times of high grass growth. Work completed in the USA has also found that an overload of lush grass or cereals ("grain") is the cause of laminitis in more than 50% of the cases reported.

Recent research has identified a grass-storage carbohydrate called "fructan" as a possible trigger for laminitis; however, the level of fructan in pasture is difficult to estimate, as it varies because of the type of grass and the climatic conditions. Until further work is done to more accurately assess fructan concentrations in grassland and the exact mechanisms are identified as to how a hindgut disturbance can cause laminitis, the best way of reducing the risk is to follow these simple guidelines:

1. Restrict access to pasture at high risk times (spring and autumn) by strip grazing, grazing ponies with sheep and turning out in a bare paddock. In the case of known laminitics, avoid all grazing;
2. Turn your horse or pony out at night, as this is when the fructan concentrations are likely to be at their lowest;
3. Feed a high fibre, low starch diet. Choose a feed approved by The Laminitis Trust such as SPILLERS HAPPY HOOF® or High Fibre Cubes;
4. Put your pony on a diet to reduce bodyweight if he is overweight, but do not starve him;
5. Don’t feed high cereal (grain) mixes as these can increase the risk of another attack.

To learn more about insulin resistance in horses, visit
http://www.ecmagazine.net/ecSummer06/insulinResistance.htm

OLYMPIC FOOTING: Controversy underhoof at the Athens Olympics Games

It's either too hard or too soft. Too dry or too wet. Anyone who has ever worked in show management knows the importance of good footing, particularly for outdoor show jumping.