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Summary
Cock spermatozoa undergo peroxidation during aerobic incubation, forming reactive products. This process, enhanced by ascorbate, severely impairs sperm motility and is a critical factor in avian reproduction.
Area of Science:
- Reproductive biology
- Biochemistry
- Animal science
Background:
- Spermatozoa are susceptible to oxidative damage.
- Understanding lipid peroxidation in avian sperm is crucial for fertility.
Purpose of the Study:
- To investigate the susceptibility of cock spermatozoa to peroxidation.
- To assess the impact of incubation conditions and additives on sperm peroxidation.
- To correlate peroxidation with sperm motility.
Main Methods:
- Washed cock spermatozoa were incubated aerobically at 40-41°C in phosphate buffer.
- Thiobarbituric acid reactive product formation was measured.
- The effect of ascorbate addition and cold storage (0°C for 24 hr) was evaluated.
- Sperm motility was assessed in relation to peroxidation.
Main Results:
- Aerobic incubation induced the formation of thiobarbituric acid-reactive products, indicating lipid peroxidation.
- Ascorbate significantly enhanced sperm susceptibility to peroxidation.
- Cold storage did not alter the susceptibility to peroxidation.
- Peroxidized spermatozoa exhibited severe impairment of motility.
Conclusions:
- Cock spermatozoa are prone to lipid peroxidation under aerobic incubation.
- Ascorbate exacerbates this peroxidation, negatively impacting sperm motility.
- These findings highlight the vulnerability of avian spermatozoa to oxidative stress and its detrimental effects on fertility.