The role of selected biochemical components of equine seminal plasma in determining suitability for deep-freezing.

The research investigates how certain biochemical components of stallion ejaculates influence the semen’s ability to survive the freezing and thawing process. Findings suggest that pre-freezing measurements of sperm concentration, AspAT activity, and total protein content can predict the semen’s freezability in around 80% of cases.

Objective of the Study

• The aim of this research was to determine if certain biochemical components in the seminal plasma of stallions can predict the ability of the semen to withstand freezing and thawing processes, thus indicating the suitability of the semen for deep-freezing.

Methodology

• The research involved conducting experiments on 400 ejaculates from 64 stallions.
• Three parameters were examined in the seminal plasma – sperm concentration, Aspartate Transaminase (AspAT) activity, and total protein content. AspAT is an enzyme primarily found in the heart and liver, and abnormal activity can indicate cell injury.
• These parameters were evaluated before the freezing process to determine if they could be used to predict how well the semen would withstand freezing and thawing.

Findings

• The study found that the ability of semen to withstand freezing and thawing could be forecasted in about 80% of the ejaculates by determining the sperm concentration, AspAT activity, and total protein content in the seminal plasma before freezing.
• This suggests that these three parameters are strong indicators of the semen’s ability to survive freezing and thawing, thereby influencing its suitability for deep-freezing.

Conclusion

• This research provides beneficial insights for the veterinary sciences, particularly in relation to the preservation of stallion semen. By investigating specific biochemical variables in the seminal plasma, the viability of semen post-freezing and thawing can be predicted, enhancing the efficiency of semen preservation practices.