Establishment of the technique for sperm cryopreservation in Okinawan native Agu pig

点击翻译按钮获取中文摘要

The technical establishment of boar sperm cryopreservation isindispensable for effective breeding of the scarce Okinawan native Agu pig. In this study, the addition of ascorbic acid 2-Ο-α-glucoside(AA-2G) and low-density lipoprotein(LDL) tothe freezing extender reduced the plasma membrane damage in post-thaw Agu sperm as aconsequence of the protection of sperm against extracellular oxidative stress and cold shockdamage, respectively, during cryopreservation. Moreover, treatment with an artificial anti-cell death protein(PTD-FNK protein) prevented the mitochondrial dysfunction leading to the apoptotic-cell death during cryopreservation. Therefore, these results indicate that the post-thaw qualities of fragile Agu sperm is effectively improved throughthe established techniques in this study.