The
birth of a foal is a highly anticipated event
for many horse owners. Good management practices
are essential to a successful breeding program.
A live, healthy foal represents the investment
of considerable time, money and effort. Management
is especially important prior to the time the
foal is weaned. The mare and foal should be on
a regular worming, exercise, vaccination schedule
along with an adequate nutritional program. It
is also best to establish a relationship with
a veterinarian who will be available for advice
and/or emergency calls. Early management can impact
future health throughout the foal's life.
The gestation period of the individual mare may
change from one year to the next. The "normal"
length of gestation is 340 days; however this
is an average, "normal "pregnancies
range from 315 to 365 days.
PRE-PARTURATION
FOAL PROTECTION
Approximately
four to six weeks prior to the anticipated foaling
date, the mare should be boosted with vaccines
to provide high levels of antibodies in her colostrum
(first milk). Consult your veterinarian for recommendations
on which vaccines to administer, but as a minimum,
the mare should be boosted with tetanus toxoid.
PREPARING
THE STALL
The
foaling stall should be prepared well in advance.
It should be at least 12 by 14, clean, located
in a quiet area of the barn and maintained at
a comfortable temperature. The stall should be
checked over very closely for protruding nails,
splintering wood or anything else that could damage
the newly born foal. Feed and water containers
should be positioned in such a way that they cannot
interfere with foaling or injure the newborn foal
as it struggles to it's feet and learns to walk.
Be sure to have the stall disinfected prior to
the mare being introduced.
Before the mare is brought to the foaling stall,
the floors and walls should be cleaned thoroughly.
Remove any bedding and lime the floors, scrub
the walls, feeder, water bucket and manger with
soapy water using a wire brush. After the stall
has dried it should be disinfected with povidone-iodine,
pine oil or some other product recommended by
your vet. Leave the stall open to dry for several
days, then spread fresh bedding.
If
possible the stall should contain foaling rails
( boards mounted to the inside of the stall about
10" off the wall and about 10" above
the ground for the lowest ) to keep the mare off
the wall and out of corners. Straw or shredded
paper is the bedding of choice over wood chips
or sawdust which can adhere to the wet newborn
and may irritate the foal's eyes, mucous membranes
or interfere with its respiration.
Many
farm managers, owners and veterinarians prefer
to foal on clean pasture where there is minimal
exposure to infection, but to have the mare inside
where she can be closely watched is often much
easier. In a stall, assistance can be provided
more readily when necessary.
During
the last month of pregnancy the signs observed
will help determine when to change feeding practices
and when to move prepare foaling stall.
SIGNS
OF APPROACHING FOALING
Mares
may exhibit all or none of the following signs:
- Musculature
around the tail head becomes soft and flaccid
2 to 4 weeks before foaling.
- The
genitalia relaxes
- The
udder begins to fill during the same period.
- The
mare may show signs of uneasiness during the
last two weeks of gestation
- Waxing
of the teats (sticky droplets on the ends of
the teats) occurs 24 to 28 hours before parturition.
- Milky
fluid may leak from the teats for hours or days
before labor onset.
- Protrusion
of "Milk Veins" along the lower side
of the abdomen.
- Some
mares, especially maiden mares, might not produce
milk until after foaling.
- Tail
or Hindquarters rubbing.
ONE
WEEK BEFORE EXPECTED FOALING
Move
the mare to a foaling stall and change the feed
ration. It is recommended that the grain be reduce
and a more bulky ration be fed. A mare should
be switched to a ration which includes bran at
least 1 week before foaling. One pound of oats
and two pounds of bran morning and evening is
recommended to decrease the likelihood of constipation
before and after foaling. This ration will also
discourage heavy milk flow, thereby decreasing
the chance of scours in the foal and mastitis
in the mare. After foaling, the grain can be increased
gradually over a ten day period until a full grain
ration is resumed.
FINAL
PREPARATIONS
Keep
the mare in the foaling stall. If possible, an
experienced person should attend her. This attendant
can be helpful if problems arise but must know
his or her limitations and call a veterinarian
without delay when problem signs appear. Please
look at our list of commonly used items to have
on hand at foaling. Wash the mare's the udder
and genitalia with a mild soap. Wrap the tail
and readjust wrap (remove and reapply) several
times each day until foaling is complete.
THE
THREE STAGES OF LABOR
STAGE
1 - During the first stage of labor
which will last from 2 to 24 hours, the muscles
of the pelvic girdle relax, allowing the bones
to spread so the foal can be positioned toward
the birth canal. Movement is often noticeable
as the foal turns into position. The abdominal
wall above the flank and behind the ribs becomes
concave, and the tail head becomes more prominent.
Uterine contractions cause nervousness, erratic
eating, sweating, pacing, tail switching and frequent
urination. Colic can also cause these signs, and
it is possible for a mare to become colicky from
constipation prior to foaling. If the colic signs
become severe or the signs continue for hours,
call a veterinarian.
STAGE
2 - The second stage of labor can
last from a few to 30 minutes and include contractions
and delivery. It is important to leave the mare
alone at this point if birth is progressing normally.
Disturbances may interrupt or prolong the birth
process. The mare has very powerful uterine contractions,
and when the unborn foal is positioned in the
birth canal properly, delivery can occur in a
relatively short period of time (10 to 15 minutes).
Birth usually occurs shortly after the outer water
bag ruptures.
If
birth does not occur within a reasonable length
of time (20 to 30 minutes) after strong contractions
begin or shortly after the rupture of the water
bag, malpositioning may be present, and a veterinarian
should be notified. Presentation of the foal's
front feet occurs first in a normal delivery,
soles down, relatively close together, one slightly
more advanced than the other to help reduce the
circumference of the foal's shoulders and easing
passage through the pelvis, the nose of the foal
should be tucked between the extended forelegs
near the knees.
Most
mares position themselves on their sides, with
their legs fully extended during the delivery
of the foal; however, some insist on standing.
Standing mares should be held to prevent excessive
walking. If the mare delivers standing, someone
should catch the foal and gently lower it to the
ground to prevent injuring the newborn foal and
to prevent the tearing of the umbilical opening
in the abdominal wall and predispose the foal
to a hernia. The urachus (tube leading to the
urinary bladder) may also tear, causing urine
leakage into the foals abdomen. If the mare lies
down next to a wall or fence, make sure there
is plenty of room for the foal's delivery, or
cause the mare to rise and allow her to select
another location not so close to an obstacle.
The
mare will usually rest after the passage of the
shoulders and again after the passage of the hips.
Do not pull on a foal progressing slowly through
the vagina. If birth progress stops for more than
ten minutes in one spot, apply gentle traction
times with the contractions. If the foal feels
"locked in," rotate the body one way,
then the other; this might allow the hips to slip
through the pelvic opening of the mare. Call a
veterinarian if this technique is not immediately
successful. Walk the mare until the veterinarian
arrives. Suspect malposition of the foal and call
a veterinarian when:
- only
one foot is present
- more
than two feet are visible
- feet
are upside down
- the
nose does not appear
- the
nose appears without the front feet.
As
the foal emerges, the inner sac usually breaks.
If the sac does not break, free the foal from
the sac and wipe the nose and mouth. Foals not
breathing well should be rubbed vigorously with
a towel to stimulate breathing. Allow the foal
to lie quietly behind the mare for 10 to 25 minutes
until the pulsation's in the umbilical cord cease.
This allows the foal to receive the blood remaining
in the placenta still attached to the uterus.
Then crush or cut the navel cord and separate
it three inches from the body and dip in antiseptic
to destroy bacteria, help dry up the stump, and
prevent infections. Dip the stump again in a few
hours. Some individuals also dip the feet (a possible
portal of entry for bacteria). Caution should
be used as a mare's disposition can change quickly
from friendly to aggressive at this time due to
maternal instinct.
STAGE
3 - The afterbirth is expelled during
the final stage of labor with the aid of uterine
contractions. This process usually occurs within
three hours, with normal range from 10 minutes
to 8 hours. The placenta should be tied in a knot
that hangs above the mares hocks to prevent her
from stepping on it and tearing it out prematurely.
Premature pulling of the placenta can cause irreparable
damage to the mare's reproductive tract and may
cause part of the placenta to be retained.
Once
the membranes are expelled, these contractions
continue to decrease the size of the uterus. Colicky
symptoms may also appear at this time which are
caused by contractions of the uterine muscles.
The placenta is expelled inside out. Membranes
which are not expelled within four hours are considered
retained. Do not pull on these retained membranes.
Tie them near the mare's vulva to keep the mare
from walking on them. A veterinarian should treat
a mare with retained afterbirth to prevent possible
uterine infection and founder (laminitis). Membranes
which are passed should be saved in the plastic
bag for the veterinarian to examine. Self examination
can be performed, you can fill the placenta with
water, any tears or missing parts may indicate
the mare has retained a portion of the placenta.
Retained placenta, even small pieces, could impair
future breeding ability.
During
this time, the mare will clean the foal which
should be trying to stand. Foals not standing
within the first 2 to 4 hours after birth may
be weak or abnormal and may require special treatment.
The mare should be "milked out" and
the foal fed 4 to 8 ounces. This will stimulate
most of the slow starters. The foal also needs
first milk (colostrum) before 6 hours pass to
help combat disease and to aid in eliminating
fecal material which has built up in the intestinal
tract.
"Milking
out" a small amount of milk by hand will
open and clean the teat ducts. Check the teats
for soreness. Some mares will not accept their
foal readily if their udder is inflamed. Once
on his feet, the foal will generally find his
way to the udder. Let the foal find the teat himself;
to help him by forcing his head is futile. Maiden
mares should be held during this first nursing
in the event they become anxious and kick at the
foal.
An
enema to help the foal pass meconium (sticky feces
in the rectum and colon) is a preventive step
because retained meconium in the intestine can
harden and become impacted, causing the foal to
strain to defecate and flag his tail back and
forth. A word of warning regarding the enema:
lubricate the tip and gently place no more than
1 inches inside the anus and all care should be
taken to prevent the perforation of the intestine.
The foal usually passes pieces of yellow-yellow
brown manure (meconium). If the foal fails to
defecate, becomes constipated or colicky, call
a veterinarian.
Soon
after parturition a veterinarian should examine
the mare and foal for abnormalities such as cleft
palate, heart defects, cataracts and musculoskeletal
disorders. At this time, the veterinarian can
also vaccinate against tetanus and administer
any appropriate antibiotics. He should also examine
the mare for damage to the reproductive tract
and palpate the udder to check for mastitis. The
mare should receive a tetanus toxoid injection
at this time. The placenta should be examined
to make sure it is completely intact.
Good
foaling management is an important aspect for
optimum health and survivability of both the mare
and the foal. |