Estrous Cycle
Article
Progesterone Delivery Device Evaluated in Broodmares
Researchers found an intravaginal progesterone-releasing device effective in inducing early estrus in mares.
Photo by Anne M. Eberhardt
Article
Mobile Blue Light Therapy for Broodmares
Mobile blue-light therapy is as effective at advancing seasonality as indoor barn lighting.
Photo by Anne M. Eberhardt
Article
10 Steps for Successful Live Cover
Promote safe and successful live cover breeding with careful preparation and attention to safety.
Photo by Anne M. Eberhardt
Article
Suppressing Estrus in Mares
November 29, 2012
Most options can lessen the effects of estrus while still allowing mares a second career as a broodmare.... Read More
Article
Progesterone Delivery Device Evaluated in Broodmares
October 13, 2012
Researchers found an intravaginal progesterone-releasing device effective in inducing early estrus in mares.... Read More
Article
Mobile Blue Light Therapy for Broodmares
October 12, 2012
Mobile blue-light therapy is as effective at advancing seasonality as indoor barn lighting.... Read More
Download
Reproduction Topics (AAEP Convention 2011)
March 06, 2012
Equine authorities discuss aspects of reproduction at the 2011 AAEP Convention in San Antonio, Texas.... Read More
Article
Hormone Therapy Table Topic (AAEP 2011)
December 29, 2011
Topics discussed included induction of ovulation, estrus behavior, and suppression in the performance horse.... Read More
Article
Mare Reproductive Health Gets Help From Newly FDA-Approved Drug
January 05, 2011
After years of intensive research, a product called SucroMate has achieved the coveted status of FDA-approved for reproductive health in mares. This is no easy feat as only two veterinary drugs obtained FDA approval in 2010. SucroMate is licensed to ... Read More
Article
Feeding the Estrous Cycle: Tailoring the Mare's Diet
December 01, 2010
Mares must have a well-balanced diet and healthy body condition to cycle properly, conceive, and carry a foal.... Read More
Article
10 Steps for Successful Artificial Insemination for Horses
December 01, 2010
Artificial insemination (AI) is today's breeding standard for many types of horses. To find out how to make our readers' artificial insemination programs more successful, The Horse went to two recognized experts in equine artificial insemination... Read More
Article
Safe (Equine) Teasing
December 01, 2010
Teasing is essential to detect when a broodmare is in estrus, but it's no easy feat due to the size and power of the animals involved. Safety should be top priority--to avoid injury to horses and people.... Read More
Article
10 Steps for Successful Live Cover
December 01, 2010
Promote safe and successful live cover breeding with careful preparation and attention to safety.... Read More
Article
Breeding on Foal Heat Considerations
April 10, 2010
Weigh the benefits and risks of breeding a mare on her first postpartum ovulation, referred to as a foal heat.... Read More
Article
NSAIDs for Mating-Induced Endometritis Examined in Mares
March 06, 2010
Non-steroidal anti-inflammatory drugs could assist vets managing persistent mating-induced endometritis (PMIE), a chronic inflammation of the lining of the uterine wall after breeding or artificial insemination, a leading cause of reduced ferti... Read More
Article
Virginia Tech Equine Hospital Offers Laparoscopic Ovariectomies
February 20, 2010
Combining their surgical expertise with state-of-the-art laparoscopic equipment, veterinary specialists at Virginia Tech's Marion duPont Scott Equine Medical Center have been able to remove certain mares' ovaries in a surgical procedure... Read More
Article
Study Sheds Doubt on Marbles' Effect on Mare Heat Cycles
September 26, 2009
Many people have offered solutions to overcome the problems of inconsistent performance while mares are in heat. One method popular with owners today is the implantation of marbles as glass intrauterine devices (IUDs). "The original paper... Read More
Article
Estrus Suppression
May 01, 2009
When a mare exhibits unexpected or undesirable behavior that cannot be explained by illness or injury, the owner might suspect it is related to the mare's estrous cycle. He or she might notice the mare is more difficult to train or ride... Read More
Article
Hormone Therapy in the Mare, AAEP 2008
April 10, 2009
The discussion on hormone therapy in the mare followed a systematic progression through three broad areas: 1) hastening the onset of (ovarian) follicular activity and ovulation in winter anestrus (noncycling) mares; 2) synchronizing ovulation in cycl... Read More
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Kester News Hour
March 17, 2009
Top 2008 equine studies include lawsonia, EPM, heart murmurs, etc., at the AAEP Convention.... Read More
Article
Unique Attribute of Equine Uterus Impacts Embryo Transfer
January 26, 2009
The equine uterine environment plays an integral role in the early developmental stages of pregnancy, even prior to implantation of the embryo, according to British researchers who recently examined the role of the uterus in ... Read More
Article
See the Light: Advancing the Breeding Season for Early Foals
October 12, 2008
Horse breeders face a dilemma every year as the breeding season nears. Should they breed for early foals or breed their mares to foal out in the spring and summer? The fact that all foals in the northern hemisphere share the same... Read More
Article
Ovariectomy an Option for Performance Mares and Molly Mules
February 19, 2008
Lacey is beautiful, full of personality, and very athletic--for a mule, that is. Her owners plan on showing their cherished mule when she is ready, but they face an obstacle that all owners of female mules or mares go through--heat cycles. ... Read More
Article
Progesterone Test Makes Reproductive Management Less of a Nightmare
November 13, 2007
New research has revealed that a commercially available progesterone test is reliable and practical, and it can help veterinarians manage breeding mares more efficiently. According to researchers from the College of Veterinary Medicine at... Read More
Article
Inducing Ovulation With Recombinant Equine Luteinizing Hormone
July 29, 2007
Manipulating the estrous cycle in mares is a big part of many breeding operations, and medications play various roles in the process. There are several options for inducing ovulation, including human chorionic gonadotropin (hCG),... Read More
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Repro Updates
March 23, 2007
Equine reproduction was covered at the 2006 AAEP Convention including foaling, venereal disease, breeding, etc... Read More
Article
hCG and Ovulation
February 14, 2005
Managing a mare's estrous cycle is an integral part of breeding management, and human chorionic gonadotropin (hCG) is one hormone option for doing just that. Patrick McCue, DVM, PhD, Dipl. ACT, associate professor of equine science at Colorado Stat... Read More
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Farm Call: Your Questions Answered
Pregnant Mares in Heat?
Q. Can you supply me with a veterinary explanation on whether a mare that is in foal can come back into season? We have had many discussions about this subject at my barn and are still divided on the answer. Â
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