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Twinning (Twins) in Mares and Management of Twin Embryos
by Robert N. Oglesby DVM
Introduction
Introduction
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Days 14 - 35
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Days 36 - 110
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Late Gestational Twins
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More Info
With the advent of diagnostic reproductive ultrasound, veterinarians have discovered an amazing thing: that twin embryos in horses have always been fairly common prior to day 30 but seem to often correct themselves by day 45. However some mares do carry their twins into advanced pregnancy and this is undesirable. The uterus has a hard time supporting twins so the incidence of late gestational abortion runs as high as 70%. When aborption does not occur, foals are often born dead or weak and dystocia common. Others complications include retained placenta, delayed recovery of the uterus, decreased rate of settling for the next 2 years, and potentially permanant damage to the mares reproductive tract. Equine twinning seems to be most common in TBs and Warmbloods, and uncommon in Arabs. New on the diagnosis front is a dependable way to determine late gestational twins in equines. This article discusses the diagnosis of twins at different stages of pregnancy, evaluation, and recommended treatments.
~Word Count: 1440 words (The average magazine page contains about 600 words);
~Last Updated: May 28, 2008;
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Discussions on Twinning and Management of Twin Embryos
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Subtopics |
Posts |
Updated |
 | Twins | 1 | 6 | May 26, 04 |
| Just had healthy twins--a rarity! | 1 | 7 | Apr 19, 04 |
| Stillborn Twins | 1 | 5 | Apr 18, 04 |
| Friesian mare in foal w/possible twins | 1 | 4 | Jul 7, 03 |
| Twins at 9 Months--Fingers Crossed! | 1 | 3 | Apr 19, 03 |
| TWINS FROM ONE EMBRYO | 1 | 2 | Jan 18, 03 |
| Horses and Twins | 1 | 10 | Jun 7, 01 |
| Missed twinning by ultrasound | 1 | 5 | May 21, 01 |
| Swelling Caused by pinching twin | 1 | 5 | May 10, 00 |
| Late twin birth | 1 | 4 | May 10, 00 |
| Pinching a twin | 1 | 2 | Apr 29, 00 |
| Thoroughbred mare with twins-28 days | 1 | 11 | Sep 22, 99 |
| Twin mare | 1 | 5 | Apr 17, 01 |
| Breeding after abortion of twins | 1 | 6 | Mar 25, 06 |
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