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.