Evaluation of used Purslane extracts in Tris extenders on cryopreserved goat sperm

This study aimed to evaluate the comparative effects of Purslane aqueous extract (PAE), Purslane methanolic extract (PME) and Purslane ethanolic extract (PEE on the quality of frozen-thawed goat spermatozoa. Collected semen with motility >75% and sperm concentration >1.0 × 10⁹ sperm/ml was pooled and divided into 10 equal aliquots and supplemented by basic extender containing 25, 50 or 100 μg/ml of Purslane aqueous extract (PAE_25μg/ml, PAE_50μg/ml, PAE_100μg/ml, respectively), basic extender containing 25, 50 or 100 μg/ml of Purslane methanolic extract (PME_25μg/ml, PME_50μg/ml, PME_100μg/ml, respectively), basic extender containing 25, 50 or 100 μg/ml of Purslane ethanolic extract (PEE_25μg/ml, PEE_50μg/ml, PEE_100μg/ml, respectively). Control diluent contained no additives. For the determination of sperm quality, frozen straws were thawed and then the sperm characteristics were assessed. Results indicated that higher (P < 0.05) percentages of total motility, viability, mitochondrial activity and lower percentages of malondialdehyde (MDA) for PAE_50μg/ml, PME_50μg/ml and PEE_50μg/ml than those of the control. In addition, PME_50μg/ml resulted in the highest) P < 0.05) total motility and the lowest (P < 0.05) MDA levels compared to other treatments. Compared to the control group, PME_50μg/ml resulted in higher integrity (P < 0.05) of plasma membranes and in lower amounts of apoptotic and dead spermatozoa. PME_50μg/ml and PAE_50μg/ml showed higher (P < 0.05) percentages of progressive motility, DNA integrity and live post-thawed spermatozoa than those of the control. No significant differences in the motility, viability, mitochondrial activity and number of live sperms were observed between PME_50μg/ml and PAE_50μg/ml treatments. In conclusion, the results of this study indicated that 50 μg/ml purslane extracts could be used for the cryopreservation. However, the results of methanolic extract was more beneficial compared to other extracts.