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Featured News: Grafting an Orphaned Foal onto a Lactation Induced Recipient Mare

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April 28, 2016

Grafting an Orphan Foal onto a Lactation Induced Recipient Mare_foals nursing In our last newsletter we featured an article entitled Introducing a Nurse Mare to an Orphaned Foal. We discussed where you may look to find a nurse mare should you find yourself with an orphaned foal and how to go about introducing them to one another. However, there is an alternative option to a nurse mare which was not covered in this article, grafting a foal onto a recipient mare which has been induced into lactating. It just so happened that a week after our last newsletter was sent out we were faced with finding a nurse mare for two orphaned foals (pictured left with their new moms) which were admitted to our mare services division. We wish to highlight our recent success stories and share this alternative option with you.

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Featured Blog: How to Manage the 'Slow' Stallion in the Breeding Shed

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April 28, 2016

Training 3 Juvenile and older males entering a new career as a breeding stallion don't have the luxury of a changing cascade of hormones or an event like parturition to jumpstart their innate nature to show them how to be a stallion. There is likely only a change in routine, location, or in their training schedule that cues them into their new roles as breeding animals. Many stallions make the transition seamlessly. Simply acting on the behavior they have been trying to use for years, allowing their behavior to mimic their springtime rise in testosterone. When exposed to a female, they have little doubt about the job at hand and will readily take to live cover or phantom training. Additional information for training the young stallion for collection can be found in our article, Collecting Semen from the Young Stallion. However, for some, the transition proves far more difficult and oftentimes frustrating for the stallion and for the staff at the shed.

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Featured Question

Is my mare too old to breed with frozen semen?

In older and problem mares, pregnancy rates after insemination with frozen semen are lower than AI with fresh semen. Data collected from a large number of mares indicated that pregnancy rates per cycle were reduced in mares aged ≥ 16 years old (<16yr 54% verses ≥16yr 42%). The deposition of semen in the uterus, by natural breeding or artificial insemination, causes a strong inflammatory reaction. This is a natural process designed to remove excess sperm, seminal plasma and contaminants from the uterus. Older mares appear to be less efficient at clearing this natural inflammatory process that follows mating. An inflammatory uterine environment 5 days after fertilization is incompatible with survival of the embryo. Older mares, at risk of developing a persistent inflammatory reaction after semen deposition require additional management at breeding time. Treatment strategies for this population of mares should include prompt correction of anatomical defects of the caudal reproductive tract, limited uterine exposure to semen and bacteria and support of uterine clearance from contaminants and products of inflammation. Ideally, only semen of good fertility should be used in these mares.

See also:

Influence of Mare Status When Breeding with Frozen Semen

How to Prepare the Older Mare for Breeding

Ovum Pickup in the Mare

Mare Owners:  Minimize Stress and Promote Success by Being Prepared for Breeding Season

Preparing Your Mare for Breeding

The Pros and Cons of Equine Frozen Semen

Use of Frozen Semen in an A.I. Center: Technical Management and Obtainable Results 


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