A mare may lactate days or even weeks before foaling, but this can be a serious foaling complication. A mare's first "milk" isn't milk at all. It's called colostrum and it contains the foal's immunity to disease. Some mares may leak a little colostrum before foaling. Usually the foal is born within about 48 hrs. If the mare begins to leak large amounts before foaling, you may need to be prepared for a complication after the foal is born. If all the colostrum has leaked out, there will be none, or not enough for the foal and the foal may become sick and die. A veterinarian can do a quick stallside test to see if the foal has eaten enough colostrum to give it the immunity it needs to survive. If the foal fails the test, IGg may be given to the foal orally (within the first 24 hrs) or thru an IV to save it.
It can be hours or days. Usually a few days. Keep watch.
Until she weins her foal at about 3 to 4 months. Some mares will nurse their foals for over a year in the wild.
go to http://duncity.net/horses/foalingcalc.htm and use the foaling calculator
No, she will most likely deliver a dead foal. Unless there are foaling complications, she will live.
A mare shouldn't bleed at all after foaling. If she does it is an indication that something is wrong that would require veterinary attention. After the foal is born the placenta will be expelled from the mare which will be red and may appear bloody. This should be completely expelled within a half hour after foaling and should never be pulled on to help it come out. If the placenta has not detached after 4 hours, call your vet because the mare may have a uterine infection. A mare shouldn't bleed at all after foaling. If she does it is an indication that something is wrong that would require veterinary attention. After the foal is born the placenta will be expelled from the mare which will be red and may appear bloody. This should be completely expelled within a half hour after foaling and should never be pulled on to help it come out. If the placenta has not detached after 4 hours, call your vet because the mare may have a uterine infection.
Mares come into a foal heat within a week or 10 days after foaling. In the wild, it's not uncommon for a stallion to breed with a mare in foal heat, however a mare may be reluctant because of the foal's presence. She might not show any signs of heat either.
Technically, a mare can be bred again on her "foal heat". Her first "heat" cycle usually a few weeks after giving birth. For big breeding farms they do rebreed the mare at this time. For most backyard horse people this time comes and goes without notice. They are too busy playing with their new foal and its nice for the mare to recover from birthing. There is usually plenty of time to decide if you want to breed your mare again.
Preparing your mare for foaling in the proper way is essencial in her health. I have written an article on when my mare foaled, and how we prepared & cared for her, and our new foal. This is the link: http://www.ehow.com/how_4526561_prepare-mare-foaling.html
If you mean how long are mares in gestation, then 11 months. If you mean how long until a mare can breed again after foaling, I don't really know. The mare goes back into heat usually around two or three weeks after foaling.
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Foaling.
foaling
Post foaling, the mare's uterus needs to discharge remaining fluid and return to it's original size (involute). By around 10 days post foaling the mare has gone through foal heat and completed the "cleaning stage".
go to http://duncity.net/horses/foalingcalc.htm and use the foaling calculator
The earliest a mare can be bred post foaling is during the post foaling heat which occurs about a week after the foal is born. It is generally acknowledged that the mare is less fertile during this heat cylce because the uterus is usually not completely clean and totally involuted (returned to it's normal size). However, if the mare doesn't ovulate until 10 or more days post foaling the chance of a pregnancy is much higher.
Ideally, foaling takes place in a specially built large stall called a foaling stall. When foaling outside in a herd, mares often separate themselves to foal. A few seek out the company of a special horse friend (usually another mare) or the herd while foaling.
As long as the mare has regular heat cycles and is in good health she can be bred well into her 20 (of course some breeds seem to be able to do this at an older age) I had a 28 year old mare have a totally fine pregnancy, foaling and suckled the foal just fine-- but she was an Arabian mare.
To give birth to a foal (baby horse) by a mare (mother horse).
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