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.

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.

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.

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.