Cooled & Frozen Semen

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Factors Affecting Fertility with Cooled Semen

With the use of cooled shipped semen on the rise, breeders want to maximize the effects of this new technology as best they can. However, there are a variety of factors that can affect fertility with cooled semen, said Dickson Varner, DVM, MS,

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Foal Sex Selection

Sex selection of foals prior to conception is highly desirable for horse breeders. Currently, sperm can be sorted by their X and Y chromosomes, improving odds of sex selection through artificial insemination. Flow cytometry measures DNA in cells

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Effects of Airport Radiation on Shipped Semen

As airports across the country and around the world continue to tighten security, there is a growing concern among some researchers that increased irradiation levels for screening luggage and shipped parcels have the potential for damaging

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AAEP Convention 2001: Reproduction Research

Presentations on reproduction have long been a hallmark of AAEP gatherings, and this year was no exception. The full-day reproduction session was split into two parts–the first was of a general nature, while the afternoon in-depth session

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A Breed Apart: Cooled and Frozen Semen

The shipping of cooled and frozen semen has opened the door to a wide variety of breeding opportunities for horse owners, providing, of course, that their breed organization permits artificial insemination (AI) with shipped semen. A mare in New

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Freezing Semen

The technology that allows us to freeze a stallion’s semen for future use has opened up a world of opportunities. Not only does it allow the stallion’s DNA to be available to mare owners around the globe, but it enables a stallion to stand at stud wh

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Consequences

Do you want a say-so in what the United States government is doing that concerns horses? I’m talking about the issue of allowing equine semen into this country with even less testing than presently is required. Horse breeders know that semen can

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Semen Evaluation

Breeding horses today often involves the use of artificial insemination (AI) with fresh, cooled, or frozen semen (except for Thoroughbreds). But whether you are using AI or live cover, the main goal is to get a viable sperm to fertilize a mature

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Does Frozen Semen Really Work?

It has been more than 40 years since Canadian investigators reported the birth of the first foal from the insemination of a mare using frozen stallion semen. Since then, the technology of semen freezing has evolved tremendously. On a

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