How do you tell how far along my mare is?

To calculate how far along your mare is, follow these steps:
  1. Take the current date.
  2. Get the mating date.
  3. Subtract mating date from current date: Current date - Mating date.
  4. Now you know how the current length of your horse's pregnancy! 🎉
  5. Keep in mind, the average horse pregnancy length is equal to 338 days.


How far along is my mare pregnant?

The average gestation length of the mare is 340 days (range 315-365 days) and gives ample time to prepare for the arrival of the newborn foal. Mares due in winter tend to carry their foals longer than mares due in summer.

How can you tell when a mare is about to foal?

The visual signs of a mare's readiness to foal are:
  • Udder distension begins 2-6 weeks prior to foaling.
  • Relaxation of the muscles of the croup 7-19 days prior to foaling; relaxation around the tail head, buttocks, and lips of the vulva.
  • Teat nipples fill 4-6 days prior to foaling.
  • Waxing of the teats 2-4 days before.


How long does it take for a pregnant horse to start showing?

Generally speaking, I feed my mares the same as their pre-pregnancy standards until they start showing at around 7 months, when I'll increase slightly. The critical stage is about 1 month before foaling.

How do you tell if your mare is pregnant without a vet?

8 Signs That Your Horse is Pregnant
  1. Absence of An Estrus Cycle May Indicate a Horse Is Pregnant.
  2. Changes in Behaviour & Responses Can Indicate Pregnancy.
  3. Elevated Progesterone Levels Are a Sign a Horse Is Pregnant.
  4. Bloated Stomach Can Be a Sign of Pregnancy.
  5. Changes to Mare's Udders Can Indicate a Horse Is Pregnant.


Signs Your Mare Is Close To Foaling



What does a mare look like right before birth?

If your mare allows you, lift her tail once daily to look at her vulva. A normal vulva is not very long and has wrinkles on its sides. Right before foaling everything on her hind end relaxes, including her vulva. It will appear much longer to you and won't have as many wrinkles on its side.

How do you know if your mare is about to break your water?

Water Breaking and Amniotic Membrane

A white bubble, the amniotic membrane, will appear at the vulva within 5 minutes of the mare's water breaking. This is the membrane that envelopes the foal within the placenta. At this stage the mare may get up and down several times.

What does a pregnant horse belly look like?

Shape of abdomen

When heavily pregnant, your mare's belly will be very big and round, but the closer she is to foal, the more her belly drops. Some mares even develop some oedema (fluid retention) on their bellies. A normal vulva (left), and a relaxed, elongated vulva when the mare is close to foaling (right).


How can you tell if a mare is pregnant early?

Read on to discover the six signs that your mare may be pregnant:
  1. i. Moody mares. If you think that your mare has conceived, one way to check is to take her back to a stallion two weeks after covering to observe her behaviour. ...
  2. ii. Heat rising. ...
  3. iii. Tell-tale tummy. ...
  4. iv. Shake it off. ...
  5. v. Feeling fine. ...
  6. vi. Scan to be safe.


How soon can you tell if a mare is pregnant?

“Levels of eCG in the blood rise starting around Day 35 and remain elevated until Day 100-140 of gestation. The eCG assay is reliable in determining if a mare is pregnant or open but only in the narrow period from days 35 to 100 post ovulation.

How long before foaling does a mares belly drop?

In general, the mare's belly will drop significantly two to three weeks prior to her foaling, and is easier seen in older mares. Her tail ligaments at the top of tail will begin relaxing one to three weeks before foaling, preparing the mare for foaling.


What time of day do mares give birth?

Most mares will foal between the hours of 10pm and 2am, but parturition (aka birthing) can occur at any time of day. Watching them on cameras or from a distance to ensure they are not in labor and struggling is the least invasive way you can monitor them.

How long is first stage labour in a mare?

Stage one begins with the onset of contractions and generally lasts 1-2 hours. During this phase, contractions move the foal through the cervix and into position in the birth canal. The fetal membranes (allantois) may become visible at the mare's vulva. When the sac breaks, signaled by a rush of fluid, stage one ends.

When can you start to feel a foal move?

Your foal becomes active as a fetus, with head nods beginning at day 40 and limb movements beginning by day 46. Your foal's heartbeat can be clearly detected by day 42, as a distinct and faster beat than your mare's.


How late in pregnancy can you palpate a mare?

Between 90 and 120 days of gestation, the veterinarian should be able to detect the fetus and its movements via palpation.

How overdue can a mare go?

Mares commonly have gestation lengths longer than the average of 335-340 days, and this is a common concern to horse owners. Usually, there is no cause for worry. Gestation can be as long as 375 days and the record gestation length is over 400 days.

Can a mare be pregnant and not look pregnant?

Not all mares show obvious signs of being in foal, even late in the pregnancy. While some mares may look fuller and their udders may appear to be full of milk for a few weeks before foaling, others may not. Some will show very evident signs that they are in foal, or about to foal.


Do mares wink when pregnant?

A: Mares in late pregnancy will occasionally show signs of heat, such as elevation of the tail, frequent urination, and “winking” of the lips of the vulva. They will stand stretched out, as if receptive to being bred.

Do pregnancy tests work on horses?

The Estrone sulfate test is very useful and accurate for diagnosing pregnancy in mares from day 90 to term. Estrone sulfate is produced by the fetal-placental unit and is therefore a good indicator of fetal well-being.

How do you tell if your mare is having a colt or filly?

On an open mare (or a gelding) the nail is not supposed to move. On a mare that is going to have a stud colt, the nail will swing back and forth in a straight line. If she's going to have a filly, the nail will swing around in a circular motion.


What does a mares udder look like before foaling?

In the final days before foaling, the teats of your mare's udder begin to extend outward as her udder distends. Pressure from her growing milk supply pushes the teats away from the udder and, as foaling nears, the teats enlarge, ready for the arrival of her newborn foal.

Do all mares wax before foaling?

Waxing is the appearance of beads of wax-like material on the ends of the teats. This wax is actually colostrum which oozes from the teats in the last few days of pregnancy. Waxing occurs in about 95% of mares 6 to 48 hours before foaling, however it can also occur several days before foaling or sometimes not at all.

What to expect when your mare is expecting?

During this period a mare is often restless and appears colicky. She may also lie down and get back up, look at her flank, swish her tail, or urinate frequently. Stage 1 labor should last 1-2 hours, ending with the mare's water breaking or rupture of the allantoic membrane.


What are the 3 stages of labor for a horse?

Parturition is divided into 3 stages.
  • Stage I is characterized by signs of abdominal discomfort and restlessness due to uterine contractions. ...
  • Stage II starts with the rupture of the chorioallantois and ends when the fetus is expelled. ...
  • Stage III involves expulsion of the fetal membranes.


How late can a mare give birth?

Mares foaling before 310 days are considered to have aborted. Many breeders will calculate the expected foaling date at 11 months following the last breeding date. Most mares will gestate longer than 11 months; however, this allows for fewer “surprise” foalings in undesirable conditions.
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