The results show large differences in prizes for brood mares that have won or bred stake races. Analyzing provides information for making strategic planning, bookkeeping and managerial choices.
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What's the age of "too old" for a broodmare? - Horserace News
The Jockey Club reported last week that 33,746 thoroughbred broodmarts had been visiting colts in the past brood period. Given an avarage pregnancy of about 11 weeks it is not unusual for a mare to take several babies before she gives birth to her best progeny, which she could have in full bloom for years.
Short scans of the youngest Kentucky broodmares of the year confirm this idea: However, how should a mare management make the difficult (and sometimes financial strained) retirement appointment to a mare? According to Dr. Tamara Dobbie, head of the Hofmann Center for Animal Reproduction at the University of Pennsylvania's New Bolton Center, there are no fixed and rapid regulations for the mare's aging.
First and most evident is the probability that the filly will be successful. He sees some broodmares that already have reproductive difficulties as teenagers and others that stay reliable until their early twenty. It seems that a better prognosticator is when the filly first went into stallion and how consistent she gave birth to fillies.
The Dobbie has found females who have started to breed in the course of their youth and who are more likely to experience difficulties than those who do. "Dobbie says, "We often advise that older brood mares should still have a pregnancy every year or every two years until the broodmare is in retirement. "A broodmare that gets several years off as a later teenager can be very difficult to become pregnant again.
Elderly broodmares may be more likely to become healthy, making it more difficult to carry a filly. "For older broodmares, it is very important to pay close attention to fundamental things such as evaluating your physical condition," Dobbie said. "Mature brood mothers often need adaptations in feed and more care for their teeths to keep fit.
Poorly bodied brood mothers are much more susceptible to issues with vulnerability, which can lead to wind suction and consequent uterus stimulation or even infections. While Dobbie doesn't want a mare to become overweight, over-thinned stallions can be harder to get. In addition, they may not be able to fulfil the metabolism requirements associated with the care of a developing filly.
On the Henneke chart, a figure of about 5 is appropriate and food settings may be required to keep this value. Primary vet treatment, which includes periodic dentistry examinations and deworming, is important to help broodmares, especially older ones, keep weights during gestation and to help keep a healthy foal. However, it is also important to keep the mare in good health. Though the idea of having and giving birth to a child every year may sound discouraging to people, Dobbie is not sure that all brood mothers suffer severe erosion of their reproduction organs after just a few years.
However, in some older, experienced brood mares she sees a reduction in uterus tonus, which often makes it more difficult for the broodmare to remove fluids and avoid infections after brood. In most cases, Dobbie said, the difficulties in receiving are not synonymous with the difficulties in getting a foal, so older ponies are not naturally susceptible to foal season hazards.
Instead, the choice to retire a broodmare often lies in the fact that she can easily carry it again. Dobbie often performs a uterus sampling during a test for stud stability and evaluates the tissues on a 1 to 3 gradation, with a 3 giving the worst chances of bearing a baby.
Her advice to customers is not to breed the broodmare if she expects the broodmare to supply the living broodmare if she gets 3 points for fibre or other reasons. Even thoughibrosis is often associated with ageing, some brood mothers already show significant signs of the disease at a relatively young stage. Dobbies has experienced that other much older broodmares sometimes show almost noibrosis.
Dobbie is more interested in the story of a filly (especially a filly that has bleeding of the uterus arteries or dystocia) than in its old life when it comes to assessing the risk of birth. To subscribe to our e-mail newsletters, click here to stay up to date with these and other thoroughbred related newsletters.