China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (11): 4125-4132.doi: 10.16431/j.cnki.1671-7236.2021.11.022

• Genetics and Breeding • Previous Articles     Next Articles

Effects of Partially Replacing Glycerol with Glutamine on Capacitation and in vitro Fertilization Ability of Frozen-thawed Pig Sperm

ZHANG Yuyang1, WANG Qiuyue1, LYU Yanqiu1, CHEN Xuan1, XU Haifeng2, ZHANG Zhengwen3, JIN Yi1   

  1. 1. Agricultural College of Yanbian University, Yanji 133002, China;
    2. Changchun Urban Construction Engineering School, Changchun 130000, China;
    3. Changchun Jingkai District Xinglongshan Town Government, Changchun 130000, China
  • Received:2021-03-15 Online:2021-11-20 Published:2021-11-01

Abstract: The purpose of this experiment was to explore the effect of glutamine (Gln) instead of partial glycerol on capacitation and in vitro fertilization ability of frozen-thawed pig sperm. The experiment was divided into 6 groups:3% glycerol control group and 5 treatment groups (groups Ⅰ-Ⅴ:2% glycerol+glutamine (0, 20, 40, 80 and 100 mmol/L, respectively)). The sperm motility, plasma membrane integrity, acrosome integrity, mitochondrial membrane potential, protamine deficiency, capacitation and in vitro fertilization of frozen-thawed Songliao Black pig sperm were detected. The results showed that replacing part of glycerol with glutamine could improve the quality of frozen thawed sperm, and the degree of improvement was affected by the concentration of glutamine. Compared with control group Ⅰ, the sperm quality parameters in group Ⅰ decreased significantly (P<0.05). Compared with group Ⅰ, the sperm motility, acrosome integrity and viability in group Ⅱ increased significantly (P<0.05), the sperm mitochondrial membrane potential in group Ⅲ increased significantly (P<0.05), and the sperm motility, plasma membrane integrity, acrosome integrity, viability and mitochondrial membrane potential in group Ⅴ increased significantly (P<0.05). It showed that replacing part of glycerol with glutamine had a great impact on sperm quality, and higher quality sperm could be obtained when glutamine was 100 mmol/L. Therefore, 100 mmol/L glutamine was used in subsequent experiments. Compared with control group, the sperm protamine deletion rate of 2% glycerol+100 mmol/L glutamine treatment group decreased significantly (P<0.05), there was no significant difference in sperm capacitation(P>0.05), but the cleavage rate of embryo was increased significantly (P<0.05). In conclusion, glutamine could be used as a new cryoprotectant replacing part of glycerol to improve the quality of pig semen, reduce the toxic effect of glycerol on pig semen, and provide technical support for cryopreservation and commercial production.

Key words: pig sperm; frozen-thawed; glutamine; capacitation; in vitro fertilization

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