Fencing can have a huge impact on your horse's soundness and health.
Horses don't see the way people do. Their up-close vision is more blurry; they can't see directly in
front of themselves. Their eyes are aimed more at the ground than straight in front of them. In
general, anything that is hard to see can hurt them.
This holds true for anything in the horse's
turnout area, not just the fencing. A nail sticking out
or a sharp edge can injure a horse even if it's been there a while and he's never hurt himself on it
before. It is not safe to store many things in a horse's turnout area: garbage piles with sharp
objects (like edges of old removed fencing or nails), stacked lawn/farm refuse (sticks and logs) for a
burn pile, tractor attachments and so on all have edges on which a horse can hurt himself. Fencing
and structures--anything with nails or screws--should be regularly examined. Nails or screws
can work themselves loose and then stick out.
Fencing must take this into account. Fencing must be easy for horses to see. For example, horses
can't see thin metal hotwire; they can't even see barbed wire very well.
Fencing must be safe for horses. If they're interested in something on the far side, they may paw at
it. They may try to stick their heads through the fencing in order to get at grass or interesting
objects on the far side. A frightened or enthusiastic horse may be too excited to pay attention to
known borders, and run right into a fence. Horses can jump quite high if they set their minds to it.
Fences must be set up with all of these in mind.
As a general rule, fence materials must be installed to the INSIDE of the fenceposts. Otherwise it is
much too easy for a horse to bump into/kick the fencing and simply push it right off the posts. This
holds true for any walls or structures accessible to horses, including walls and dividers in stables.
Fence Posts -- T-Posts: Not Safe, not Safe at All
T-posts are cheap and "easy" to put in (in comparison to wood posts). However, they are not suitable
for use in horse fencing. These are narrow, will not break, but will bend.
When a horse leans on a fence constructed mostly with T-posts, he may bend the posts or simply uproot
them from the ground. He may bend several at once as he leans on a section of fence. The horse has
just created a low ramp out of his pasture!
T-posts don't stay fixed upright. If between two horse fields, if one horse bends the fence out, it
is then bent inward into the next pasture. A T-post is effectively a metal spear. A horse can
run into the top of the T-post and impale
himself. He can also impale himself by trying to jump the fence. This is an excruciatingly
painful way for a horse to be injured, and he is almost certain to die from the injury.
T-posts are simply not suitable for use in horse fencing.
Fence Posts -- Wood Posts: Best Choice
Wood posts (round or square) have a broader surface and will not bend. If a horse runs into one, he
won't impale
himself on the end. In general these are the safest fenceposts.
Typically 8"-10" posts are used for corners and bracing, and 3"-4" posts are used along the length of
the fenceline. If a horse runs into the fence at a 3"-4" wood post, or leans against the fence, or rolls into the
fence, he may break the post (particularly if they are old and very dry or rotted). Unlike T-posts,
however, when a horse breaks one the others are usually left intact. They will usually keep the fence
safe until you are able to replace the broken one.
These are wood, and even pressure treated wood needs maintenance and sometimes replacement. However,
they're a much safer choice than T-posts.
Electric Fencing -- Hotwire: Not Safe Alone
Horses simply can't see thin hotwire. They can feel it if the charge is strong enough, and that may
be
enough to keep horses contained in most daily circumstances. However, an excited horse
will run through anything, and hotwire isn't strong enough to hold a horse. When we moved to our
current farm, the horses next door were enclosed only by hotwire; they were so excited by the arrival
of our horses that they ran right through it trying to meet the newcomers. It just snapped and let
them right through.
A new horse moving in next door is not really all that unusual. Horses can get excited over silly,
inconsequential things. Weak fences are a daily risk. Because it is weak and hard to see, and
because it has openings which can tempt a horse, hotwire is not a suitable standalone fence for
horses.
Electric Fencing -- Woven Tapes and Cords: Not Safe Alone
These white tapes and cords are much more visible than regular thin metal hotwire. They can be a
great deterrent, making fences very visible and preventing horses from leaning on fences or brushing
against fences. A good "hot" electric fence can keep horses away without actually causing them injury
(like barbed wire gashes).
Most horses will avoid electric fence once they learn where it is and what it looks like. Some
will test it occasionally (or frequently). Some aren't put off by the charge much at all, no
matter how "hot" it is. These do not break easily; a horse
can still end up with the woven tape or cord wrapped around a leg or a head, and "saw" with it as they
try to get free.
If the horse is frightened by the charge of the electric fence, the panic can be all the worse. These
are not suitable for use in any design that leaves enough space between them that a horse can get
under or through them.
Barbed Wire: Not Safe, Not Safe at All
Horses can't really see barbed wire either. A horse in a barbed wire fence may brush up against the
fence before realizing it's there, and can scrape up his hide. The barbed wire can be especially hard
to see if it is rusty. Since the horse can't see it well and doesn't know exactly where it is, he can
do quite a lot of damage to himself by grazing around it--and, being horses, of course they will graze
around the fence, even if they have 30 acres in the enclosure.
They can scrape their faces or their eyes. They can stick their heads through the wire and do some
severe damage trying to get them back out. They can stick their legs through the wire pawing or just
trying to reach, and end up caught.
Again, my neighbor's fencing is a good example. One day their horses showed up in my front yard; the
mare was pretty injured on a foreleg. She was very lame. Here are some pictures after it was treated
by a veterinarian: Pictures of Fantasy's
barbed wire injury. The owners told us she had done something similar when she was
younger, and she has big scars on one leg to show for it.
Fantasy's was a mild injury, and there have been much worse, such as Petra's--she severed her
suspensory ligament and flexor tendons: Pictures of Petra's injury. This happened just
after she'd been turned back out, after stall rest due to a previous barbed wire injury.
We caught them, then went over to see what had happened. We found that they had barbed wire on the
far side of their property; it was attached to big 4"x6" posts. The barbed wire was in a huge tangle,
dragged over 20' from the fenceline, and two of the fenceposts were uprooted. Apparently, she got her
leg through the barbed wire somehow, couldn't get out, panicked and pulled, and somehow got even more
tangled. She pulled up those fenceposts using wire with barbs that was wrapped around her leg!
Because it's a dangerous material (sharp and barbed), because it has openings that tempt a horse,
because it's not visible, barbed wire is simply not safe for horses.
High Tensile Wire: Not Safe, Not Safe at All
High tensile wire has all the problems of barbed wire except for the barbs. It can be stronger,
however, and horses can get caught in it just as easily as they can in barbed wire or hotwire. Horses
can saw through the soft tissues of their legs trying to free themselves from high tensile wire.
Enough said.
Board Fencing: Safer but Limited
Board fencing is quite visible for horses, and usually strong enough to withstand normal everyday use.
However, it also has openings large enough for a leg or sometimes a head, and horses can get stuck.
If a horse runs into board fencing at high speed, it can crack.
Wood also rots over time and becomes
weak, or warps and comes off its fastenings. Wood may have the least longevity of any fence type.
(Synthetic board fencing claims to have overcome these durability problems.)
In strong weather, weakened boards can be ripped off
their fences and become flying missiles with nails sticking out.
Welded Wire Fencing: Not Safe, Not Safe at All
Welded wire looks like a solid fence, and has openings that looks pretty small. However, welded wire
is only tacked together at the meetings of the wires. It breaks very easily. When a horse runs into
or even bumps into it, the wires can break free from the joint, leaving 4 wires sticking out. When a
horse runs through welded wire, those loose ends dig deeply into his body, leaving lacerations down
the whole length.
Welded wire looks good, and is cheap, but it is weak and dangerouns once broken. Welded wire is not
suitable for horses.
Woven Wire Fencing -- Field Fencing: Safer but Has Drawbacks
Field fencing has openings that are 4" across, and small at the bottom, getting larger towards the
top. It is more visible than a single wire at intervals (like barbed wire). It is a woven wire, so
will hold against casual impacts. Woven wire will rebound when a horse
runs into it, rather than break.
However, a horse can still get his leg through this fencing, and get caught. He can saw off the bulb
of his heel trying to get free. He can also catch his shoes on it trying to get free; he can be
trapped, or rip off his shoes. It's not entirely unsafe, but is not the best choice for horses. This
can be made safer by using a line of hotwire across the top and bottom of the fence to keep a horse
from leaning over it, or pawing at it.
Woven Wire Fencing -- No Climb Horse Fence: Best Choice
Woven wire will withstand impacts better than other kinds of fencing (it rebounds, like a trampoline).
Woven wire is visible, especially no-climb since there is so much of it.
No-climb fencing has openings that are 2" across by 4" tall, so small enough that even newborn foals
can't stick their legs through it (this may not be the case with a mini foal!)
No-climb fencing may bend across the top if a horse leans on it. A good installation will have some
form of protection across the top of the fenceline. A breakable thin metal hotwire strand with a good
charger is safe to use and will keep horses from leaning on the fence. A single board is often used,
but board can break and boards can be blown off the fence by high winds. A woven tape or cord
electric fencing may not break if a horse gets his head under it or a leg through it.
Woven wire is heavy and expensive, but it is worth the effort. It will protect your horses better
than barbed wire, high tensile wire, simple hotwire or woven hotwire with no other reinforcement, and
even board fencing.
Fences can be made even more visible and also decorative by growing vines against them. Some vines
are poisonous, so investigate before you begin. I have honeysuckle growing near the main gate to my
pasture, which produces a very sweet scent when in bloom. I have wild grape growing all over, but
sadly I can't convince it to transplant to my
fencing.