Past studies investigating testicular heat stress due to exercise or insulation in the stallion have utilized thermistor probes to measure scrotal surface temperatures (SST). Although such devices are effective, a more efficient measurement of testicular thermal stress would be subcutaneous scrotal temperature (SQST). The objective of this study was to utilize a thermal sensory device to measur...

Testosterone (T) concentration is a useful indicator of reproductive function in male animals. However, T concentration is not usually measured in veterinary clinics, partly due to the unavailability of reliable and rapid assays for animal samples. In this study, a rapid chemiluminescent enzyme immunoassay system (CLEIA system) that was developed for the measurement of T concentration in humans...

A 29-year-old stallion presented with bilateral blindness following the chronic purulent nasal drainage. The mass occupied the right caudal nasal cavity and right paranasal sinuses including maxillary, palatine and sphenoidal sinuses, and the right-side turbinal and paranasal septal bones, and cribriform plate of ethmoid bone were destructively replaced by the mass growth. The right optic nerve...

Flow Cytometric Evaluation of Acrosome Function/Dysfunction in the Stallion. (August 2006) Tegan S. Bosard, B.S., University of Alaska, Anchorage Co-Chairs of Advisory Committee: Dr. Charles C. Love Dr. Dickson D. Varner The objective of this study was to establish a rapid and efficient assay that would assess acrosomal status and function of the stallion acrosome. Ejaculates from fertile and s...

A consistently high level of stallion fertility plays an economically important role in modern horse breeding. We performed a genome-wide association study for estimated breeding values of the paternal component of the pregnancy rate per estrus cycle (EBV-PAT) in Hanoverian stallions. A total of 228 Hanoverian stallions were genotyped using the Equine SNP50 Beadchip. The most significant associ...