This study provides evidence that markhor goats exhibit seasonality in scrotal circumference and testosterone levels and that centrifugation may be eliminated from the processing of markhor semen. Find company research, competitor information, contact details & financial data for Minitube of America, Inc. Sperm in Tris–5% egg yolk tended to have a higher percentage of morphologically normal sperm compared with Bioxcell ( P < 0.10). Minitube USA Quick Support Tool Contact Minitube USA, Inc. Immediately after semen collection, each ejaculate was assessed for initial motility using Computer-assisted sperm analysis (CASA) using default settings recommended by the manufacturer (Spermvision, Minitube of America, Verona, Wisconsin) for equine sperm. Sperm in Bioxcell displayed higher viability than sperm in both Tris–egg yolk extenders ( P < 0.01), more intact acrosomes than sperm in Tris–15% egg yolk ( P < 0.05), and a tendency for more intact acrosomes than sperm in Tris–5% egg yolk ( P < 0.10). Lead by John Quackenbush, CCO, and Dave Morley, COO, and supported by highly qualified technical sales and service staff, our Minitube USA team is devoted to providing the utmost quality sales and service support to their customers. Concentrations of AMH are highly correlated with antral follicle counts (AFCs) in other species, which in turn are related to follicular reserve. Sperm in Tris 5% and 15% egg yolk displayed higher total motility at 0, 3, and 6 hr postthaw and higher progressive motility postthaw compared with sperm in Bioxcell ( P < 0.05). Summary Reasons for performing study AntiMüllerian hormone (AMH) is a granulosacellderived glycoprotein, which plays an important inhibitory role during folliculogenesis. Postthaw evaluation revealed no significant differences between centrifuged and noncentrifuged samples. Samples were then thawed for repeat evaluation 1–3 mo later. Semen samples were divided into six aliquots for extension and cryopreservation in soy-based Bioxcell® or Tris-based extender with 5 or 15% egg yolk, with and without centrifugation. Once a month for 3 mo (December, January, and February), bucks were anesthetized for electroejaculation and semen evaluation. Maximum scrotal circumference (25.2 ± 0.9 cm), serum testosterone (521.0 ± 103.4 ng/dl), and fecal testosterone (382.5 ± 90.3 ng/g) occurred in November, when day length was short (9.7 ± 0.1 hr). Over the course of 1 yr, mean monthly scrotal circumference, serum testosterone, and fecal testosterone were measured and found to be inversely associated with day length. The aims of this study were to determine the reproductive seasonality of four captive markhor goats ( Capra falconeri heptneri), to characterize semen collected by electroejaculation, and to compare extenders and processing techniques for semen cryopreservation.
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