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Ten Tips to Keep Horses Healthy This Summer from Penn Vet's New Bolton Center

By Louisa Shepard Published: Jun 17, 2016
(June 17, 2016; Kennett Square, PA) -- Summer is a great time to ride, but summer heat can be dangerous for horses, resulting in dehydration, lethargy, and general malaise. Severe heat stress may cause diarrhea, or even colic. Following these 10 tips and using common sense will help keep you and your horse safe and comfortable during the hot days ahead.

Dr. Janet Johnston, an Emergency and Critical Care veterinarian at Penn Vet’s New Bolton Center, offers the following tips as we approach the first day of summer:

1.  Choose cooler turnout times. If your horse has a stall, but is turned out for part of the day, provide turnout during the cooler hours. Overnight is ideal, but if that’s not possible, then have the horse go outside as early as possible during the day. Remember the summer heat can also take a toll on the quality of your pasture. You may need to provide additional feed as the grass becomes sparse to maintain proper body condition and energy.Two horses in field

2.  Provide shade. If your horse lives outdoors, or if it must be outside during the day, provide relief from the sun. A run-in shed is best. Trees are a source of shade, but as the sun moves, so will the shade. Make sure that, regardless of the time of day, available trees are offering shade.

3.  Move the air. Fans are a great way to help keep the air moving in the barn, but use them wisely. Your horse will benefit most if the fan is pulling the hot air out of the stall, not pushing air into the stall. And always ensure that your horse cannot reach cords and plugs.
 
4.  Mist your horse. If you are fortunate enough to have a system to mist your horse, use it. As the moisture is absorbed from your horse’s skin, it will take away some of the heat. Frequent mistings are far more effective than a single dousing with a hose.
 
5.  Provide fresh, cool water and an electrolyte source. Make sure your horse has plenty of fresh, cool water. A bucket hanging on a fence will get warm, and the water will no longer be appealing. Left long enough, the water will also become stagnant and unhealthy. If you are providing clean, cool water and your horse doesn’t seem to be drinking, then encourage it by providing a salt block, or even by misting hay with salt water.  If your horse is sweating a great deal, water laced with electrolytes can help keep its body in balance. Whenever you offer electrolytes, however, be sure to offer fresh water, as well, because too many electrolytes can be harmful.
 
6.  Slow down the work. Don’t think that because your horse has been working intensely at 1:00 pm every day that it can take the heat when the temperature tops 90 degrees. If you have to work your horse in the heat, lighten the work or spread it out over a couple of short sessions. This is especially important when the humidity is high, contributing to the poor quality of the air your horse is breathing. Cool your horse down slowly, and offer frequent sips of cool, not cold, water. Take the tack off as soon as you’re done and sponge the horse off again with cool, not cold, water. 
 
7.  Stick to a schedule. Within the parameters of keeping your horse cool, try to stay as close as possible to a normal schedule. Too much change at one time can be an invitation to colic.
 
8.  Avoid sunburn. Horses, especially white horses, can suffer from sunburn. Even those with white socks and blazes, pink noses, or hairless patches from scarring can be susceptible. Using a fly scrim can help. In addition, applying sunblock such as zinc oxide, to small, particularly vulnerable areas can be effective. Staying out of the sun’s harmful rays will, of course, be best. (Also be aware: if a horse has excessive sunburn, it could indicate a rare, underlying liver disease). 
 
9.  Clip horses with longer hair coats. Clipping is important, especially for those with Cushings disease. While some coat can provide protection from the sun and insulation, a long, thick coat tends to hold heat and makes it difficult for the horse to cool down. Be careful not to clip the hair too close, as it provides some protection from damaging rays.
 
10. Know your horse and signs of heat stroke. Heat stroke can happen anytime your horse is exposed to excessive heat and its body cannot handle it. Heatstroke obviously can happen if exercising in hot conditions, but be aware that it can also happen if standing in a hot stall or trailer. 
 
You should know your horse’s normal temperature, heart, and respiratory rates. To find the heart rate of a horse, simply find a pulse and count the beats for 15 seconds, then multiply that number by 4, which will give the beats per minute. Count the breaths per minute in a similar way.
 
Signs of heat stroke can include:
·      An elevated heart rate that does not return to normal in a reasonable period of time
·      Excessive sweating OR lack of sweating
·      Temperature that persists above 103 degrees F
·      Depression, lethargy
·      Signs of dehydration: dry mucous membranes, poor capillary refill, and poor skin turgor
     
If you are concerned that your horse is suffering from heat stroke, call your veterinarian immediately and get your horse into a cooler environment.
 
New Bolton Center’s Emergency Service is open 24 hours, 7 days a week, 610-444-5800.

About Penn Vet

Ranked among the top ten veterinary schools worldwide, the University of Pennsylvania School of Veterinary Medicine (Penn Vet) is a global leader in veterinary education, research, and clinical care. Founded in 1884, Penn Vet is the first veterinary school developed in association with a medical school. The school is a proud member of the One Health initiative, linking human, animal, and environmental health.

Penn Vet serves a diverse population of animals at its two campuses, which include extensive diagnostic and research laboratories. Ryan Hospital in Philadelphia provides care for dogs, cats, and other domestic/companion animals, handling nearly 35,000 patient visits a year. New Bolton Center, Penn Vet’s large-animal hospital on nearly 700 acres in rural Kennett Square, PA, cares for horses and livestock/farm animals. The hospital handles nearly 4,900 patient visits a year, while the Field Service treats more than 38,000 patients at local farms. In addition, New Bolton Center’s campus includes a swine center, working dairy, and poultry unit that provide valuable research for the agriculture industry.

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Martin Hackett
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mhackett@vet.upenn.edu
215-898-1475

John Donges
Communications Coordinator
jdonges@vet.upenn.edu
215-898-4234

Hannah Kleckner
Communications Specialist for New Bolton Center
hkleck@vet.upenn.edu
610-925-6241