Category Archives: breeding

Anovulatory Hemorrhagic Follicles (AHF)

Posted: | January 23, 2021

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 »

Predicting Ovulation

Posted: | January 16, 2021

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 »

Artificial Insemination Method

Posted: | January 15, 2021

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 »

Mare Management with Cooled-Shipped or Frozen Semen

Posted: | December 17, 2020

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 »

Individual Tuition

Posted: | December 17, 2020

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 »

You’re Ready to Breed Your Mare – But is the Semen OK?

Posted: | December 15, 2020

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 »

Early Equine Embryology

Posted: | December 13, 2020

Embryology – Different Stages of the Early Equine Pregnancy – Equine embryology – early pregnancy images. A pictorial showing embryonic developmental images through to the fetal stage of 50 days. All day numbers given here are the number of days post-ovulation on the conceiving cycle. The 32 to 64 cell stage of a developing embryo is the morula.… Read More »

Early Embryonic Death (EED) – what it is and why it may happen

Posted: | December 3, 2020

Early Embryonic Death – Noted reproductive veterinarian Dr. Jon Pycock explores early embryonic death in the mare and some possible resolutions to the problem. By Jonathan F Pycock, BVetMed, PhD, DESM, MRCVS, RCVS Specialist in Equine Reproduction For all horse breeders, it is important to realize that not every mare will give birth to a live foal. Failure… Read More »