Summer

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Take an inside look into the latest the scientific studies at the University of Saskatchewan's veterinary college, with the Western College of Veterinary Medicine's semi-annual newsletter: Horse Health Lines.

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Horses are commonly housed in individual boxes. While this may be convenient and prevent injuries from other horses, it may also be detrimental to the horse’s welfare, especially if access to pasture is limited. A paper by Alice Ruet and colleagues investigated the effect of various management practices on the display of behavioural indicators of compromised welfare in housed horses.

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Is it hot enough for you? If you feel suppressed by repeated days of hot and humid weather, you can be sure that your horse feels worse.

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Summer brings with it a surge in insect activity, and flies can quickly become a serious source of discomfort for horses. These pests are more than just irritating—they can transmit disease and provoke allergic responses.

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Parasite prevention remains a vital part of maintaining horse health—but gone are the days when you could rely on a routine deworming every eight weeks with the same product.

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As horses exercise, their core body temperature climbs. To prevent overheating, the body relies heavily on sweat evaporation to cool down. Sweating is essential during physical activity, but it leads to the loss of both water and vital electrolytes. These include sodium, chloride, potassium, calcium, and magnesium—key minerals that support nerve function, hydration, and muscle activity. Without proper replenishment, electrolyte depletion can impair performance and compromise your horse’s well-being. Supporting your horse’s recovery means restoring both water and electrolyte levels in appropriate proportions.

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"My horse is smart enough not to eat toxic plants" - This is a comment I often hear during property visits focused on responsible manure and pasture practices. While it’s true that horses generally avoid undesirable or toxic plants when there’s ample healthy forage available, issues tend to surface when pastures are overgrazed and food choices become limited. That’s when horses may resort to eating weeds or harmful plants. It’s essential for horse owners to recognize which plants pose a threat and to understand how to control their presence in grazing areas.

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Canadian equestrians breathe a sigh of relief when long-awaited spring weather finally arrives and the outdoor riding season begins in earnest. Time to fit up our horses and ourselves for trails, competitions, and the pleasure of spending time outdoors, finally free of the layers of winter gear and horse hair that come with the chillier seasons…

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Not much can gross out a horse person. We happily pick out hoofs, observe the quality of manure, scrape bot eggs off our horses’ legs, and get a weird sense of satisfaction from an expressed abscess. But ticks… ticks are just nasty.

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Climate change is increasingly affecting horses, horse properties, and their owners across Canada. In recent surveys, nearly 90 percent of Canadians reported noticing the impacts of climate change in their communities. Horses are facing rising health risks, including respiratory diseases from wildfire smoke and dust, skin conditions and hoof damage caused by unpredictable weather, and new parasites and diseases. Horse owners are also dealing with higher hay costs, unexpected veterinary expenses, and challenges related to weather disruptions, such as riding limitations. Meanwhile, owners of horse properties are working to repair damage from severe storms, flooding, droughts, and high winds.

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