Effect of various concentrations of butylated hydroxyanisole and butylated hydroxytoluene on freezing capacity of Turkman stallion sperm.

The research article discusses a study that examines how different concentrations of butylated hydroxyanisole and butylated hydroxytoluene affect the freezing capacity of stallion sperm.

Objective and Method of the Study

• The objective of this research was to see how different concentrations of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) impact the quality of stallion sperm after it has been thawed.
• The researchers collected ejaculates from four healthy mature Turkmen stallions, pooled them together, and divided them into eight portions.
• These samples were then diluted with extenders laced with varying concentrations (0.5, 1, or 2mM/mL) of BHA or BHT.
• Two control categories were set up: one was a positive control (PC), where samples were diluted with extender containing 0.5% ethanol, and the second was the negative control (NC), where samples were simply diluted with a basic extender.
• The semen samples were then frozen following a standardized process.

Assessment Post-Thaw

• After the frozen samples were thawed, several parameters were evaluated to assess the quality of the sperm. These criteria included sperm motility, viability, membrane integrity, total abnormality, and lipid peroxidation.
• The results showed the highest values for total sperm motility, viability, and plasma membrane functionality in samples that were supplemented with either 1mM BHT or 2mM BHA. The lowest values for malonedialdehyde (MDA) concentration, which is a marker of oxidative stress, were observed in these samples as well.
• However, only the samples treated with 2mM BHA demonstrated greater progressive motility.

Conclusion

• The findings of this study suggest that adding either 1mM BHT or 2mM BHA to the extender enhances the freezing ability of stallion sperm.
• This improvement appears to be due to a reduction in oxidative stress during the freeze-thaw process – a critical benefit for preserving sperm quality for future use.