For horse owners, one of the most frequent areas of pressing health concern is their animals’ digestive system. Colic, ulcers, diarrhea, and leaky gut syndrome can be a constant affront to the well-being and success of equine athletes.

Today it is critically important to understand the basics of parasite resistance and develop a deworming program that will work for your farm. That program will need to be reevaluated and modified as environmental conditions change from year to year, and farm management and the number of horses fluctuates.

There are a vast number of plants located throughout Canada that are toxic to horses in some respect. Many need to be eaten in large doses to cause much of an effect, while others require only a few mouthfuls. There are a variety of resources on plants toxic to livestock, but the Canadian Poisonous Plants Information System seems to be the most comprehensive. It lists over 250 poisonous plants found in Canada, their lethal dose (if known), and symptoms of poisoning.

How flies spread parasites and disease - Flies are the bane of many horses’ existence from spring through autumn. In Canada, horse-biting flies include gnats (no-see-ums), black flies, stable flies, deer flies, horse flies, and mosquitoes, all of which create painful sores. Non-biting flies include house flies, eye gnats, face flies, bot flies, and warble flies, and can be just as irritating. It’s not just buzzing and biting that’s worrisome; flies may transmit parasites and diseases, can cause a horse’s immune system to overreact, and some use horses as hosts, all of which impact horse health. Preventing horses from being bitten is key. Before diving into solutions, here’s a summary of the damage that flies can inflict on Canada’s horses.