Quality of boar ejaculates depending on the breed

  • S. Kornjat Institute of Animal Biology NAAS, Lviv, Ukraine
  • N. Kuzmina Institute of Animal Biology NAAS, Lviv, Ukraine
  • M. Sharan Institute of Animal Biology NAAS, Lviv, Ukraine
  • D. Ostapiv Institute of Animal Biology NAAS, Lviv, Ukraine
  • S. Kava Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, Lviv, Ukraine
  • O. Chajkovska State Scientific-Research Control Institute for Veterinary Medicinal Products and Feed Additives, Lviv, Ukraine
  • O. Panych State Scientific-Research Control Institute for Veterinary Medicinal Products and Feed Additives, Lviv, Ukraine
  • I. Atamaniuk State Scientific-Research Control Institute for Veterinary Medicinal Products and Feed Additives, Lviv, Ukraine
  • T. Stetsko State Scientific-Research Control Institute for Veterinary Medicinal Products and Feed Additives, Lviv, Ukraine
Keywords: quality of ejaculates, sperm, breed, boars

Abstract

The physiological and biochemical characteristics of boar ejaculates were studied in relation to the breed (pietrain, maxter, landrace, duroc and dung: large white breed × landrace). It has been established that the physiological indicators of ejaculate quality depend on the breed of boars. Higher ejaculate volume was found in large white breeds boar × landras (207.0±29.21ml), and spermatozoa concentration in maxter and pietrain (0.40 – 0.43×109/ml). The number of live spermatozoa in the ejaculates of boars of the studied breeds did not differ (78.7 – 80.3 %). Maximum values of respiratory activity (0.66±0.09 ng-atom О2/0.1 ml×min) and succinate dehydrogenase activity (SDH; 17.9±3.43 UI/0.1 ml×h) were typical for duroc, and redox ability (0.11±0.03 mV/ 0.1 ml×min) and cytochrome oxidase activity (CO; 32.9 ±5.15 UI/0.1 ml×h) for maxter.

Probably, spermatozoa, depending on the breed of boars, differ in the ways of use of substrates - in sperm of durok breed the ATP is oxidized more intensely through the SDG-oxidase pathway of substrate oxidation, and in sperm of the breed maxter - glycolysis (redox ability) and respiratory chain (its terminal link (CCO) are more active. In addition to breed characteristics of cell metabolism, differences in types of nervous system and non-compliance with the conditions of males preparation for ejaculation in artificial vagina may be the cause of the established differences. These ejaculatory disorders may result in an imbalance between the amounts of secretions of the individual additional gonades, resulting in a deficiency or excess of oxidizing substrates both to meet the energy needs of the sperm and free radical oxidation.

The highest sperm survival rate (90.3 - 92.0 h) was registered in ejaculates of  maxster and landrace breeds.

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Published
2019-09-18
How to Cite
Kornjat, S., Kuzmina, N., Sharan, M., Ostapiv, D., Kava, S., Chajkovska, O., Panych, O., Atamaniuk, I., & Stetsko, T. (2019). Quality of boar ejaculates depending on the breed. Scientific and Technical Bulletin оf State Scientific Research Control Institute of Veterinary Medical Products and Fodder Additives аnd Institute of Animal Biology, 20(2), 346-351. https://doi.org/10.36359/scivp.2019-20-2.45