When Can A Mare Go Back To Work After Foaling?

A mare needs some time to rest and recover post-foaling, but just how long does she need before she can go back into work? Though each mare is different, if the mare was in good physical shape before foaling, she will most likely be able to return to work sooner than a horse who wasn't fit prior to having her baby, according to a report from the American Quarter Horse Association. Ensuring that the mare isn't overweight when she's bred – and when she foals – can speed her return to work.

Dr. Ben Espy says most mares can begin working again six to eight weeks after a complication-free foaling. However, some mares may experience pregnancy-related circulatory side effects, like edema in the legs and belly. This generally resolves in a few weeks after the foal is born. The ability for a mare to move around after foaling is often helpful in alleviating excess fluid.

Even after a normal birth, most mares have some minor vaginal tears, bruising, and abrasions. These issues normally heal within a week and don't hinder a mare's return to work. More serious complications like a breech birth or intense bleeding will require longer recovery time.

Any pre-foaling issues should be reassessed before the mare is asked to go back into work, including prior lameness issues. Asking a veterinarian to evaluate the mare's physical condition and soundness before going back to work is prudent.

When bringing a mare back into work, it's imperative that the owner or rider pay attention to her hydration. A lactating mare can drink as much as 10 more gallons of water per day than other horses. If the temperatures in which she is asked to work are hot and humid as well, she could require as many as 20 to 30 gallons of water per day to stay hydrated.

Read more at AQHA.

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Study: Mare Size Affects Birth Process

Drs. Christina Nagel, Maria Melchert, Christine Aurich and Jörg Aurich created a study to determine if the size of the mare affected the birthing process. The team used 23 pregnant mares and studied hormone and heart-related changes that occur in the mare and the fetus around birth. The groups consisted of six Shetland Pony (small); eight Haflinger (medium) and nine warmblood (large) mares.

They discovered that foal weight was approximately 10 percent of mare weight, no matter the size of the mare. Placenta weight was highest in Warmbloods; it did not differ between the small- and medium-sized mares. Progestins and cortisol were also highest in the larger mares. Progestin concentrations decreased as foaling got closer and cortisol increased as parturition was imminent in all sizes of horse studied.

Heart rates in all mares increased before foaling, but the most pronounced increase was in the small mares. Overall, the small mares foaled earlier than the larger mares.

Missed heartbeats during foaling occurred regularly in the larger mares, but only occasionally in the small- and medium-sized mares. The scientists report that this is most likely because of differences in heart efficiency. Small- and medium-sized mares occasionally had missed beats during the expulsive phase of foaling and the first two hours after delivery. The researchers suggest that this is an effect of breed, not size.

The team concludes that fit, athletic horses have highly efficient respiratory and cardiovascular systems; while at rest, these horses have reduced heart rates. Fetal heart rate also went down toward birth, with the most prominent reduction in full-sized horses.

The authors determined that mare of different sizes show both similarities and differences in cardiac and endocrine changes as the time for them to give birth nears. They note that late pregnancy puts substantial strain on the mare's cardiovascular system, but that mares are well adapted to these demands, no matter their size.

Read the full article here.

Read more at HorseTalk.

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