Does Stabling Protect South African Horses Against African Horse Sickness?
By the SportHorses.co.za editorial team
Stabling alone should not be treated as reliable protection against African horse sickness. Research published in December 2000 from the eastern Free State found that open stables admitted one important midge species readily, while closing doors and screening windows substantially reduced entry. For a South African horse owner, the useful question is therefore not simply whether a horse comes indoors, but how that accommodation excludes midges. Read the study by R. Meiswinkel, M. Baylis and K. Labuschagne.
For anyone choosing livery before bringing a new horse home, that distinction turns a reassuring phrase into a useful conversation. Ask to see the stable and discuss its overnight routine. This is a guide to asking better questions, not a certification scheme for buildings or a replacement for veterinary advice.
Why is being indoors not the same as excluding midges?
Different midge species can respond differently to the same stable. In the eastern Free State study, the researchers compared catches inside and outside two horse-baited stables, one traditional and one modern. They investigated doors, window screening and ceiling fans rather than assuming that a roof provided protection. The research abstract describes the comparisons.
More Culicoides bolitinos were caught in open stables than outside. By contrast, indoor catches of Culicoides imicola with doors open or windows unscreened were lower than outdoor catches. The authors concluded that open structures might protect against the latter, an outdoor-preferring species, while increasing attack rates from the former, which enters buildings. These are findings from that study, not a survey of every South African yard. Meiswinkel and colleagues explain the distinction.
The practical lesson is modest but important: do not use “stabled at night” as the end of your assessment. Use it as the opening question. A seller's description of the horse's previous routine is useful background; it does not establish what protection your proposed yard offers.
Assess the barrier, not just the building.
What did the South African study actually establish?
Closing doors and screening windows reduced midge entry in the study, but the findings were about midge catches, not a guaranteed disease outcome for an individual horse. The authors reported a 14-fold reduction in numbers of C. bolitinos and C. imicola entering stables when doors were closed and windows gauzed. They also found that a well-gauzed traditional stable was as effective as a closed modern stable. See the published abstract.
Ceiling fans had no suppressant effect in that experiment. That does not answer every question about fans, comfort or ventilation; it means a fan should not be presented as a demonstrated substitute for screening on the strength of this research. The same study is the source for that limited finding.
Separate what you can verify from what needs specialist judgement. You can inspect whether a screen is torn, ask how a door is used and request a written routine. Whether the entire arrangement is suitable for your horse and local conditions requires discussion with your vet and yard manager.
What should you ask when viewing a livery yard?
Ask how the proposed protection works in ordinary daily use, rather than accepting a description such as “enclosed stabling”. The following is a discussion checklist, not a technical specification or a promise of disease prevention.
| What the yard says | A useful follow-up question |
|---|---|
| Horses come in at night | What happens to doors and windows after they come in? |
| The windows are screened | Can we inspect the screens and discuss repairs? |
| Staff follow a set routine | Who checks it, and who covers absences? |
| The stable has fans | What separate measures address midge entry? |
| The building is modern | Can you show me the actual protective features? |
Walk through the arrangement with the person responsible for the horses. Ask them to demonstrate it rather than relying on a photograph taken when everything was newly installed. Include your own horse's needs in the discussion: an arrangement that is difficult for staff to operate deserves further thought before you commit.
A short written record can keep the conversation practical:
- Note which stable your horse would occupy.
- Photograph any features you want your vet to assess, with permission.
- Record who checks screens and who arranges repairs.
- Ask how feeding, checks and access fit around the agreed routine.
- Agree how changes or damage will be communicated to you.
Think beyond one hazard, too. Discuss access and emergency procedures alongside screening; our livery-yard evacuation planning guide provides a separate framework for that conversation. Do not improvise alterations that compromise another part of the yard's safety plan.
How does this fit alongside vaccination and movement planning?
Treat accommodation as a separate veterinary discussion, not permission to set vaccination or movement requirements aside. In its notice dated 06 August 2025, the Western Cape Department of Agriculture described AHS as a notifiable viral disease affecting all equines and often fatal. That notice also set out zone-specific vaccination requirements. It is a dated reference, so confirm the applicable requirements with your vet and State Veterinary Services rather than using it as an automatically current instruction. Read the department's notice.
Keep two questions distinct: “Is this accommodation suitable?” and “What must be arranged before this horse moves?” Our Western Cape AHS movement-planning guide can help structure the latter enquiry. A reassuring answer about the stable does not resolve the paperwork question, or vice versa.
For a prospective purchase, make the receiving yard part of your preparation before agreeing on a delivery plan. Ask the seller for the existing management routine, then discuss the proposed change with your own advisers. The objective is a workable plan for this horse, not a comparison of which yard makes the strongest claim.
What else do owners ask about stable protection?
Does an expensive modern stable offer better protection?
Not necessarily on appearance alone. In the December 2000 study, a well-gauzed traditional stable was as effective as a closed modern stable; inspect the protective arrangement rather than treating building age as proof. Source: Meiswinkel and colleagues.
Can screening guarantee that my horse will not get AHS?
The cited experiment does not establish that guarantee: it reports reductions in midge entry. Keep that distinction explicit when discussing protection with your yard and vet. Read the study's findings.
What should I do before changing the stable?
Discuss the proposal with your vet and yard manager, including ventilation, access, the horse's comfort and staff routines. Ask for advice on the whole arrangement rather than buying a material and assuming the problem is solved.
Before choosing a new horse or receiving yard, use the checklist to make your next conversation more specific. A clear, demonstrable routine is a better basis for planning than the word “stabled” on its own.
