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http://dx.doi.org/10.5187/JAST.2007.49.6.729

Antioxidative Effect of Pyruvate, Taurine and Melatonin, and Relationships of the Evaluation Methods on Boar Sperm Viability for In Vitro Storage  

Jang, H.Y. (College of Animal life Science, Kangwon National University)
Park, C.K. (College of Animal life Science, Kangwon National University)
Cheong, H.T. (School of Veterinary Medicine, Kangwon National University)
Kim, J.T. (School of Veterinary Medicine, Kangwon National University)
Lee, H.K. (Department of Genomic Engineering, Hankyong National University)
Im, S.K. (National Livestock Research Institute, RAD)
Yang, B.K. (College of Animal life Science, Kangwon National University)
Publication Information
Journal of Animal Science and Technology / v.49, no.6, 2007 , pp. 729-736 More about this Journal
Abstract
The objective of this study was to investigate the anti-oxidative effects of pyruvate, taurine and melatonin on sperm characteristics(motility, membrane integrity) and lipid peroxidation(LPO) for in vitro storage of boar semen. Semen was treated with various antioxidants such as pyruvate(1mM), taurine(50mM) and melatonin(100nM) with or without 100uM H2O2. Antioxidant treatments were significantly increased the sperm motility when compare to control group in all incubation periods(P≤0.05). Hypoosmotic swelling test(HOST), membrane integrity was similar to the result of motility. In lipid peroxidation measurement by TBA reactions of spermatozoal plasma membrane, malondialdehyde(MDA) level in control and antioxidant treatments were lower than those of antioxidant plus H2O2 or H2O2 treatment for 3 to 6 h incubation period. Relationships of evaluation methods for sperm viability were investigated by motility, membrane integrity and lipid peroxidation. Among evaluation methods, LPO vs motility and membrane integrity vs LPO were negatively correlated(－0.23~－0.92 and －0.68~－0.85), but membrane integrity vs motility was positively correlated (0.53~0.94) in all treatments. These experiments indicate that supplementation of antioxidant to the semen extender can increase the sperm motility and membrane integrity and decrease the lipid peroxidation of spermatozoal plasma membrane. The HOST might be utilized to evaluate the sperm quality instead of lipid peroxidation or motility.
Keywords
Pyruvate; Taurine; Melatonin; Lipid peroxidation; Sperm characteristics;
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