China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (8): 2553-2560.doi: 10.16431/j.cnki.1671-7236.2020.08.024

• Genetics and Breeding • Previous Articles     Next Articles

Effect of Polyvinylpyrrolidone on Cryopreservation of Boar Semen

JIAN Xinrui1,2, QIAN Furong1, WANG Jun1,2, LI Xiaoxia4, ZHANG Shaoxuan3, ZHANG Zhibin1, YU Yongsheng1, GAO Kai2, DIAO Yunfei4, ZHANG Shumin1, LI Zhaohua1   

  1. 1. Branch of Animal Husbandry, Jilin Academy of Agricultural Science, Gongzhuling 136100, China;
    2. Agricultural College of Yanbian University, Yanji 133002, China;
    3. College of Animal Science, Jilin University, Changchun 130062, China;
    4. Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130062, China
  • Received:2019-12-20 Online:2020-08-20 Published:2020-08-15

Abstract: The purpose of this study was to investigate the effect of polyvinylpyrrolidone (PVP) on boar semen freezing.There were five groups in the experiment:Control group (not add PVP) and PVP treatment groups (add 0.25%,0.50%,1.00%,and 2.00% PVP to the frozen base fluid).Collecting the semen of Songliao Black pig by hand,diluted with five frozen base solutions,equilibrated for 1 h at 25 ℃,2 h at 17 ℃,3 h at 4 ℃,then filled in 0.5 mL straw,fumigated 3 cm above liquid nitrogen for 10 min,stored in a liquid nitrogen tank for 30 d and tested.Sperm viability,plasma membrane integrity,acrosome integrity,mitochondrial activity,DNA integrity,catalase (CAT) activity,superoxide dismutase (SOD) activity,glutathione peroxidase (GSH-Px) activity,reactive oxygen species (ROS) level and malondialdehyde (MDA) level were tested after thawing.The results showed that compared with the control group,adding 0.50% PVP to the frozen base fluid could significantly improve the sperm viability,plasma membrane integrity,acrosome integrity,mitochondrial activity,CAT activity,SOD activity,GSH-Px activity (P<0.05);and significantly reduced the sperm ROS and MDA level (P<0.05).Adding PVP was beneficial to improve DNA integrity,but had no significant effect on DNA integrity compared with the control group (P>0.05).In conclusion,adding PVP to boar semen in the frozen base solution could improve the quality of sperm after freezing and thawing,the best concentration was 0.50%.

Key words: boar; semen; polyvinylpyrrolidone (PVP); cryopreservation; semen quality

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