Breeding and Reproduction

Horse breeding from planning through foal care

Genome Sequenced

Japanese scientists recently announced that they have sequenced the genome of Clostridium perfringens. The organism can cause diarrhea, scours, and other intestinal problems in horses. Clostridia are normally found in various environments

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Placentitis-Causing Bacterium Gets Name

Each year throughout the United States, mares lose their pregnancies due to placentitis or an infection in the placenta. Placentitis causes lesions in the placenta, which provides nourishment from the mare to the fetus. When that nourishment is

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Three to be Sentenced in Nevada Wild-Horse Killings

According to an Associated Press report, two men charged in the killing of 34 wild horses in the hills east of Reno, Nev., pleaded no contest Jan. 7 to single gross misdemeanor counts, and a third defendant pleaded guilty to a misdemeanor.

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Investigating Foal Respiratory Disease

“While many outbreaks of respiratory disease in foals are infectious in nature, this is not always the case,” she began. “Environmental factors can have a profound effect.”

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Assessing Sperm Quality

Laboratory assays have been developed which evaluate multiple sperm parameters on large numbers of sperm in a semen sample. These assays may prove useful in evaluating semen prior to insemination or at the beginning of the breeding season.

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Mother’s Milk: Understanding Mare Lactation

Many think that lactation in the mare is not that important, especially compared to the dairy cow, from which milk is taken directly for human consumption. However, the importance of lactation in the mare must not be underestimated. Indeed, some

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Breeding Planning: Selecting A Sire


When you drive by a farm and see a bright, playful young foal romping in a lush pasture with his dam, it’s easy to forget how much work, money, and planning went into his breeding. Many people underestimate the planning that goes into a

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In the Aftermath of Birth–Retained Placenta

The birth of a foal is a wondrous event; if all goes well, it is over quickly as the mare goes through the three stages of labor. The first stage generally involves restlessness as the mare paces the stall, paws, lies down, gets back up, and

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Mild Winter Weather: Affect on Horses

It is well-accepted that the foal losses and other problems seen in several states in the spring of 2001 were triggered by environmental factors, meaning weather. Farmers and livestock managers have known for years that weather conditions affect the

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Pericarditis Study Results Released

Pericarditis is a disease involving the sac around the heart and the heart itself. The disease is uncommon. During the spring of 2001, however, an unexpectedly large number of cases

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MRLS Research Yields Answers

The University of Kentucky (UK) College of Agriculture released guidelines (below) to help horse owners and farm managers avoid mare reproductive loss syndrome (MRLS) and the uveitis (eye) and pericarditis (heart) problems that struck horses in

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MRLS Kentucky Economic Impact: $336 Million

More than 30% of the anticipated 2002 Thoroughbred foal crop in Kentucky was lost due to mare reproductive loss syndrome (MRLS) this spring. The economic cost to the state from losses suffered by all horse breeds will total nearly $336 million,

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Foaling Problems

A medical doctor once told me, There’s only a 1% chance that a problem will develop, but if it develops in you, then it’s 100% a problem. So it goes with foaling: Foaling difficulties occur in less than 1% of births, but if it’s your mare, thi”P>A medical doctor once told me, There’s only a 1% chance that a problem will develop, but if it develops in you, then it’s 100% a problem. So it goes with foaling: Foaling difficulties occur in less than 1% of “>A medical doctor once told me, There’s only a 1% chance that a problem will develop, but if it develops in you, then it’s 100% a problem. So it goes with foaling: Foaling diffi”A medical doctor once told me, There’s only a 1% chance that a problem will develop, but if it develops in you, then it’s 100% a problem. So it ” medical doctor once told me, There’s only a 1% chance that a problem will develop, but if it develops in you, th”medical doctor once told me, There’s only a 1% chance that a problem will develop,”edical doctor once told me, There’s only a 1% chance”dical doctor once told m

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