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Archives Animal Breeding Archiv Tierzucht
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Volume 51, issue 1
Arch. Anim. Breed., 51, 16–22, 2008
https://doi.org/10.5194/aab-51-16-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.
Arch. Anim. Breed., 51, 16–22, 2008
https://doi.org/10.5194/aab-51-16-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  10 Oct 2008

10 Oct 2008

Characteristic of selected rheological parameters of stallion ejaculate

L. Severa1, L. Máchal2, I. Křivánek1, M. Machatková3, and O. Mamica3 L. Severa et al.
  • 1Department of Engineering ,University of Agriculture and Forestry in Brno, Czech Republic
  • 2Department of Animal Breeding, University of Agriculture and Forestry in Brno, Czech Republic
  • 3Department of Genetic and Reproduction, Veterinary Research Institute, Brno, Czech Republic

Abstract. Dynamic viscosity of native (30 minutes after ejaculation) and 24 hours stored (at 4 °C) stallion ejaculate was measured. The ejaculate from 10 breeding stallions was examined in three different experimental series. The average value of dynamic viscosity at shear rate 1.02 s−1 was found to be 416.8 ± 10.1 mPa.s. The correlation between ejaculate volume, sperm concentration and viscosity was tested. The experiments resulted in finding a dependence between increasing viscosity and decreasing sperm concentration (rp = −0.67; P<0.05). Performed experiments with changing shear rate demonstrated non-Newtonian characteristics of stallion ejaculate with a clear shear-thinning behaviour. Stallion ejaculate appeared to be slightly time-dependent liquid.

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