Veterinarians at the Smithsonian’s National Zoo performed the first successful reverse vasectomy on a Przewalski’s horse (E. ferus przewalskii; E. caballus przewalskii—classification debated), pronounced zshah-VAL-skeez.

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The late English sportsman Robert Sangster set records at Keeneland for many years as a buyer, paying a world record $13.l million in partnership for Seattle Dancer at the 1985 July Selected Yearling Sale.

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Acting Agriculture Secretary Chuck Conner announced the appointment of 10 new members to serve on the National Agricultural Research, Extension, Education, and Economics Advisory Board.

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2003. Stallion sperm has been centrifuged, cooled to 5°C for 12 h, and frozen without a detrimental effect on motility in a previous study; however, no fertility data were available.

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2002. The objective of the present study was to evaluate changes in equine follicular fluid insulinlike growth factor binding protein (IGFBP) proteolytic activity as well as steroid, IGF, and IGFBP concentrations during follicular development in the mare.

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2003. Experiments were conducted to study effects of macromolecules on stallion sperm capacitation and fertilization as determined by penetration of bovine zona-free and equine partially zona-removed oocytes.

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2001. The primary objective of this research was to determine the effect of supplemental dietary silicon (Si) on plasma and milk Si concentrations of lactating mares and the subsequent effect on plasma Si concentrations in nursing foals.

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1982. Milk production was measured in fourteen Quarter Horse mares at seven stages of a 150-d lactation period.

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