Activity of the supernexid dismutase Cu /Zn in seminal plasma and integrity of plasmatic membrane in semen of boar (Sus scrofa domestica) conserved with melatonin
Keywords:
SOD, semen, membrane integrity, melatoninAbstract
The objective of this research is to determine the effect of melatonin on superoxide dismutase (SOD) in seminal plasma and sperm membrane integrity during storage at 16°C. Methodology: Boar seminal samples were taken between 7-18 months of age using manual technique of gloved hand extraction in Inversiones Porcinas C.A. The optimal samples were diluted and aliquoted: control (with diluent), vehicle control (diluent and ethanol), semen with melatonin (1.25 mM), aliquots being stored at 16ºC for subsequent evaluation at day 0 and 1 of the preparation. The enzymatic activity of SOD (commercial kit Cayman®) and membrane integrity (hypo-osmotic test) was evaluated. The results were analyzed by means of ANOVA, with statistical package SPSS 15.0 for Windows with p<0.05. Results: the samples with melatonin on day 0 presented greater enzymatic activity without significant differences, sustained until day 01 with significance (p<0.05) in comparison to the control group; with respect to membrane integrity (HOST +) the samples with melatonin presented a significant elevation (p<0.05) of the percentage of HOST + sperm in difference to other groups at day 0 of preservation, keeping on day 01 of conservation. Conclusion: Melatonin improves the activity of SOD in seminal plasma and membrane integrity during the conservation of pig semen at 16 °C.
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