Oxytocin use in the mare during breeding – Delayed Uterine Clearance and Breeding-Induced Endometritis problems can be helped by Oxytocin use when breeding a mare! By Jos Mottershead Oxytocin acts on smooth muscle in the body, causing it to contract. One such area of tissue, which is of tremendous importance relative to breeding, is the mare’s uterus and… Read More »
Late Term and Habitual Abortion in the Mare – Pregnancy loss in the mare is a constant source of concern among breeders. Here some common causes are discussed. By Jos Mottershead Late term and habitual abortion in the mare is a constant source of concern among breeders. It may be as a result of identifiable repetitious causes, or… Read More »
The Equine Uterus Dissected – Here we show the gross aspects of a mare reproductive tract dissected with labels and explanations. The caudal aspect (back end) of the cervix protrudes into the vagina and is often described as having an appearance and feel of a “small volcano”. There is a depression in the center, which is the opening… Read More »
Granulosa Cell Tumor – Capable of affecting reproductive ability and overall disposition, the GCT is one of the most common ovarian tumors to be found in the mare. By Jos Mottershead Granulosa cell tumors – GCT – or granulosa-thecal cell tumors are one of the most common ovarian tumors to be found in equines. They are usually benign… Read More »
Persistent Anovulatory Follicles – Anovulatory Hemorrhagic Follicles, Luteinized Unruptured Follicles, PAFs, AHFs, LUFs – all follicular headaches in the mare! By Jos Mottershead You’re following a mare’s follicular development using ultrasound prior to breeding and are relieved to see a good sized follicle developing. Unusually, the follicle continues to develop beyond the size at which you normally see… Read More »
Indications of Impending Ovulation in the Mare – Predicting ovulation in the mare can be a challenge with mares displaying different characteristics. Here we describe some common signs. By Jos Mottershead Predicting ovulation in the mare can be difficult, as they have the capacity to be notoriously unpredictable in their timing! This can lead to frustration, aggravation and… Read More »
AI (Artificial Insemination) – Artificial Insemination of the Mare is not a difficult task to perform. Here we describe using an aseptic technique in detail. The actual process of artificial insemination of the mare is not complicated, and can be learned very quickly. Unlike artificial insemination in cattle which involves guiding the insemination pipette through the cervix via… Read More »
Protocols for Mare Management with Cooled-Shipped or Frozen Semen – methods to time breeding of mares both with and without use of pharmacological manipulation. By Jos Mottershead Mare management with cooled-shipped or frozen semen can often seem daunting but is a key element for success or failure. One can use or forgo pharmacological manipulation, and we discuss here… Read More »
One-on-one Horse Breeding Training While we are renowned for offering short courses on the subject of horse breeding worldwide, we not infrequently encounter people either at the courses or through our website who are in need of more specific one-on-one horse breeding training. Perhaps they do not own stallions but want to learn more about the reproductive aspects… Read More »
The Semen Looked Bad – Or Is It? Maybe not as bad as you think! A review of what constitutes a cooled semen dose, looking at some newer research and older dogma. By Jos Mottershead and Kathy St. Martin During the course of the breeding season – especially on the EquineRepro Facebook Group that we manage – we… Read More »
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