Reproductive biology of donkey. III. pH, osmolality and eletrolytes concentration of the semen

Authors

  • Rosana Nogueira de Morais Universidade Federal do Paraná, Curitiba, PR.
  • Raul Gastão Mucciolo Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP.
  • Wilson Gonçalves Viana Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, SP.

DOI:

https://doi.org/10.11606/issn.1678-4456.bjvras.1994.52060

Keywords:

Donkeys, Reproduction, Semen, pH, Osmotic pressure, Electrolytes

Abstract

Seminal samples of six jackass of Pega breed were analysed for pH (n=70), osmolality (n=69) and Na (n=49), K (n=51), Ca(n=51) and Mg (n=51) levels determinations. The pH values ranged from 7.0 to 7.8 with the average of 7.29± 1.18 for the total ejaculate number. Seminal plasma osmolality stayed between 273 and 373 mOsm, with the total average of 302.89± 15.03 mOsm, which represents a freezing point depression of 0.56°C. The meamconcentrations of Na, K, Ca and Mg in the seminal plasma were, respectively, 238.26±67.92,1 05.20±32.14,13.24± 1.62 and 1.54±0.10 mg%. All the result obtained at the present study were compared to scientific information about donkeys and horses. Both species are quite semilar apart from Mg levels that was lower for the donkeys. Due to the similarities between jackass and stallion seminal characteristics we believe that procedures for equine semen “in vitro” conservation might also be used for jackass semen. Complementary research is need to confirm the procedures viability.

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Published

1994-06-02

How to Cite

Morais, R. N. de, Mucciolo, R. G., & Viana, W. G. (1994). Reproductive biology of donkey. III. pH, osmolality and eletrolytes concentration of the semen. Brazilian Journal of Veterinary Research and Animal Science, 31(2), 145-151. https://doi.org/10.11606/issn.1678-4456.bjvras.1994.52060

Issue

Section

ANIMAL REPRODUCTION