Fetal Monitoring
Article
Female Equine Embryo Survival Studied
Researchers evaluated female embryo survival can be enhanced under conditions that tend to favor male births.
Photo by Spanish Riding School/Federal Stud Piber
Article
Fertilization and Early Pregnancy Loss in Mares
One of the most important causes of embryo loss during early gestation is post-breeding endometritis.
Photo by Anne M. Eberhardt
Article
Handling Dystocia on the Farm (AAEP 2011)
Owners or caretakers should be prepared for emergencies when mares are scheduled to foal.
Photo by Anne M. Eberhardt
Article
Female Equine Embryo Survival Studied
December 20, 2012
Researchers evaluated female embryo survival can be enhanced under conditions that tend to favor male births.... Read More
Article
Premature Partuition
June 01, 2012
We have a 19-year-old broodmare that bagged up and developed edema... Read More
Article
Fertilization and Early Pregnancy Loss in Mares
April 27, 2012
One of the most important causes of embryo loss during early gestation is post-breeding endometritis.... Read More
Article
Handling Dystocia on the Farm (AAEP 2011)
January 24, 2012
Owners or caretakers should be prepared for emergencies when mares are scheduled to foal. ... Read More
Article
Breeding Basics: The Mare's Reproductive Cycle
October 10, 2011
Christine Aurich, DVM, PhD, Dipl. ECAR, composed a comprehensive report about mares' reproductive cycles.... Read More
Article
Study: ECGs for Maternal and Fetal Heart Rate Evaluations
July 14, 2011
Using a fetomaternal electrocardiogram (ECG, a noninvasive way to measure electrical changes in the heart) to ... Read More
Article
Researchers Examine the Secret Life of Equine Embryos
May 07, 2011
A mare's pregnancy might not seem that complicated on the surface, but her relationship with the embryo and its adjacent parts--in total, the conceptus--is remarkably complex. In order to prevent early embryonic loss, the conceptus must interrupt her... Read More
Article
Determining Fetal Gender: Practice Makes Perfect (AAEP 2010)
March 01, 2011
For nearly 20 years, veterinarians have been determining fetal gender using transrectal ultrasound. While it's exciting for a mare owner to know the sex of the new addition before it arrives, just how accurate are these ultrasound procedures?... Read More
Article
Manual Reduction of Twins in Mares (AAEP 2010)
January 30, 2011
While a mare with twins by her side is rare and sometimes celebrated, twinning in horses is actually dangerous for the mare, especially during delivery. More often than not, one of the twins, generally the smaller and weaker of the two, will die ... Read More
Article
Dummy Foal Syndrome (Equine Neonatal Maladjustment Syndrome)
December 01, 2010
Foals exhibit abnormal, often vague behaviors and/or neurologic signs during their first few days of life. ... Read More
Article
Monitoring Fetal Heart Rate in Horses
December 01, 2010
Is it possible to hear a fetal horse's heart rate with a high-quality stethoscope? If so, at about what stage ... Read More
Article
Hormone Therapy Might Prevent Equine Abortion
March 17, 2010
Veterinarians might be able to prevent abortions in some pregnant mares that show premature mammary development, Dietrich H. Volkmann, BVSc, MMedVet (Gyn), Dipl. ACT, told equine veterinarians at the 2010 Western Veterinary Conference, held Feb... Read More
Article
Fetal Heart Rate Measurements Aid Health Monitoring
February 26, 2010
Fetal heart rate monitoring during the second half of pregnancy can help veterinarians easily and reliably assess the health of the unborn foal, according to new research by German and Austrian veterinary scientists. However, it's unlikely to give ... Read More
Article
Pregnant Mare Exercise: No Negative Effect on Fetuses in Study
January 28, 2010
Some of us tend to think we should keep a broodmare's physical efforts down to a minimum. But new research shows the heart rates of 9-month-old fetuses remained unchanged during and after maternal exercise.... Read More
Article
Late Term Abortion in Mares Reviewed for World Equine Veterinarians
November 07, 2009
Failure to conceive and early embryonic death both negatively impact the equine breeding industry; however, late-term abortions also occur and should not be ignored, said Michelle M. LeBlanc, DMV, Dipl. ACT, from Rood & Riddle Equine... Read More
Article
Monitoring Fetal Growth via Ultrasonography
October 04, 2009
Ultrasonography is a valuable tool for detecting pregnancy and establishing pregnancy loss, but it can also beused to evaluate equine fetal growth, said W.K. (Karin) Hendriks, DVM, Dipl. ECAR. Veterinarians could use a combination of... Read More
Article
ELISA Blood Test for Equine Pregnancy Tracking Available
May 07, 2009
Horsemen have a new option when checking mares for pregnancy this breeding season. Biotracking, a company created by Garth Sasser, PhD, a professor of animal science at the University of Idaho, came up with a blood test for ruminants (BioPRYN) a... Read More
Article
Early Embryonic Loss and Genetics
April 22, 2009
Chromosomes are large segments of DNA wound around special proteins within each cell's nucleus. They contain nearly all of the body's genetic material. Horses have 64 chromosomes (or 32 pairs) including the two sex chromosomes (XY in males and X... Read More
Article
Impending Arrival
December 01, 2008
Determining when a mare will foal is art and science, but there are tests to help you pinpoint the due date. Gestation in mares is estimated to last about 340 days, but this is just an average, since mares often foal as... Read More
Article
Breeding Equipment
October 01, 2008
Want your mare in Texas bred to a stallion in Germany? It’s easy with today's equipment and technology.... Read More
Article
Predicting Mare Delivery Dates: The Eyes Have It
August 03, 2006
Thanks to a University of Pennsylvania study, owners of small ponies can now predict their pregnant mares' delivery dates simply by looking into their unborn foals' eyes. During a two-year project, researchers in the university's School of... Read More
Article
Monitoring Pregnancy
December 01, 2005
Preparations for breeding and the act of getting a mare bred involve dedicated time and commitment by a horse owner. Then it seems as if all that needs to be done is to sit back and wait for the foaling date. But this is not quite so; it is... Read More
Article
Australian Mystery Disease Update
December 01, 2004
On Dec. 1, we received additional information from the Hunter Valley Equine Research Centre (HVERC), a research facility adjacent to Scone racetrack in the heart of the Australian breeding area, on a problem that is causing sporadic abortions... Read More
Article
The Equine Placenta: Mare and Foal Interactions
December 09, 2003
Abby L. Fowden, University of Cambridge, UK, discussed nutritive and endocrine functions of the equine placenta at the first Equine Placenta Workshop held at the Gluck Equine Research Center at the University of Kentucky on Dec. 5-6. She said th... Read More
Article
High-Risk Pregnancies and Sick Foals
January 09, 2003
In defining a high-risk mare, Bain said she is one which has had previous foaling problems such as dystocia (difficult delivery), hemorrhage, or a red bag delivery. He said a mare also could be at risk because of medical illness, surgery, colic... Read More
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Farm Call: Your Questions Answered
Premature Partuition
Q. We have a 19-year-old broodmare that bagged up and developed edema (fluid swelling) on her belly starting nearly six weeks before her due date. Her prospective due date is June 1. She bagged up on April 9. What could this be a sign of?
Monitoring Fetal Heart Rate in Horses
Q. Is it possible to hear a fetal horse's heart rate with a high-quality stethoscope? If so, at about what stage of gestation, and what is the optimal position of the drum?
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