Horse care in summer – tips for protection against heat and insects

Summer, sun, sunshine – for many, it's the best time of year. However, even in our latitudes, temperatures are increasingly reaching tropical levels. And with them come annoying insects. The following tips will make life easier for your horse in summer.

INHALT
Protective measures in hot weather Insects and horses Protective measures against insects
Protective measures in hot weather

Horses overheat much faster than humans. Prevent heatstroke, sunstroke, or heat cramps:

  • Provide your horse with sufficient shade. If the pasture or paddock does not offer this, it is better to bring your horse back to the stable after a shorter grazing period. An alternative would be to switch from day to night grazing.
  • Move training to the early morning or late evening hours, or ride in the shade of a cool forest when it is hot.
  • Always provide your horse with sufficient water. The normal water requirement of 30-50 liters per day increases in hot weather. Make sure that the water troughs are always working.
  • Make sure your horse gets enough minerals. These are excreted in sweat. Increase the mineral feed ration in hot weather or offer a mineral lick or mineral treats.
  • If you have to transport your horse in hot weather, the horse trailer should never be completely closed. Heat can build up very quickly. Open the windows and, if necessary, the tarpaulin roller blind while driving. When the trailer is stationary, also open the trailer flap and the door.
  • At competitions or training away from home, use any shade available, for example between trailers. Offer your horse water regularly. This should be lukewarm, not cold.
  • Consider whether the journey to the competition or training is still suitable for horses in extreme heat or whether it would be better to cancel for the sake of your horse's well-being.

Insects and horses

Insects are most prevalent during the summer months. They are not only a nuisance for your horse, but their bites and stings cause pain and itching. Insects are also involved in the transmission of various diseases.

Flies prefer to sit on the horse's head, around the eyes and nostrils. They like to lay their eggs in manure and dung heaps, as well as in open wounds, which also serve as a source of food. The germs transmitted in this way can cause inflammation and disease.

The bite of horseflies is painful. Horseflies are considered carriers of equine infectious anemia (see corresponding article) and skin fungus (see corresponding article) due to their intake of large amounts of blood. They are particularly attracted to sweat.

The botfly lays its eggs on horses' legs or belly in summer, where the first larval stage develops. Licking and rubbing cause them to enter the mouth and then the stomach. There, the larvae can burrow into the mucous membranes and cause inflammation. From spring onwards, they are then excreted in the feces and the cycle begins again.

Black flies are common near streams and rivers, as they lay their eggs in flowing water. They resemble flies. The females suck blood from the ears or belly of horses. Their bites not only trigger allergic reactions such as summer eczema (see corresponding article), but can also cause dangerous toxic shock.

Midges are another cause of summer eczema. When they bite, the females secrete an anticoagulant that causes severe itching. They bite horses on the mane and tail, and less frequently on the belly.

Mosquitoes are also triggers of summer eczema. The bites of the females cause severe itching and can lead to wheals in cases of massive infestation. Due to climate change, the risk of infection from mosquitoes is expected to increase. Among other things, they transmit West Nile fever (see corresponding article).

Deer flies attack deer, roe deer, but also horses and humans, clinging to them, breaking off their wings and sucking blood. The bite causes considerable pain and severe itching. Severe skin rashes in the form of pustules and edema can occur, as well as severe inflammation caused by transmitted bacteria.

Most tick specieslive in tall grass and get onto horses from there. Their bite is not noticeable and causes only slight itching. Ticks transmit bacteria and viruses, which in turn cause various diseases such as babesiosis/piroplasmosis (see corresponding article), Lyme disease (see corresponding article) or, more rarely in horses, TBE. More and more tick species are spreading in Central Europe.

Stinging flies are mainly found near cattle farms and prefer to bite horses on the belly and legs. After their painful bite, they consume large amounts of blood and are therefore carriers of equine infectious anemia (see corresponding article), among other things.

Horse with insects
Protective measures against insects

Fly rugs offer good protection against various insects. Rugs with neck covers and belly flaps are recommended for sensitive horses. The particularly fine-meshed eczema rugs also protect against black flies and midges. As these are mainly active in the morning and evening hours, the best time for eczema sufferers to go out to pasture is between 9 a.m. and 3 p.m. or at night. Additional fly masks protect your horse from eye infections transmitted by flies.

Insect spray in spray bottles or insect gel for application act as repellents: they repel insects without killing them. However, the effect is only short-lived and varies in effectiveness. Various essential oils are used as natural repellents. Artificial repellents are more effective but also have more side effects.

For particularly sensitive horses, you can also obtain insecticidal wash emulsions from your vet.

Some feed and feed supplements contain garlic. The evaporation of essential garlic oils through the skin is said to reduce insect nuisance.

Worming at the end of November/beginning of December with preparations from the avermectin group is considered effective protection against botflies, as this kills their larvae in the stomach. Eggs laid on the horse's legs can be effectively removed from the skin with water and fruit vinegar.

Ticks should be removed immediately with tick tweezers or a tick card to prevent the transmission of pathogens. Make sure that the tick is removed whole and disinfect the bite site afterwards.

Various horsefly traps are available for purchase and can be set up in pastures or paddocks, with varying degrees of success in reducing horseflies.

Good stable and pasture hygiene generally helps to further reduce the number of insects.

Horse with fly rug
Insect protection with fly sheets