Abstract: In recent years,the application of antioxidant during the cryopreservation of boar semen in order to improve quality of post-thaw semen attracted considerable research efforts. The data revealed that the effect of supplemented glutathione,superoxide and catalase,alpha-tocopherol,L-cysteine and L-glutamine,Chinese herbal medicine in extender could effectively prevented damage,improved kinematics parameters,protected sperm acrosome integrity and plasma membrane integrity,and increasing the sperm fertilizability after freezed-thawed.This review will contribute to make a better understanding of these antioxidants on the mechanisms of resistance to sperm cryodamage,develop an objective evaluation of effectiveness and estimate the applied prospect during the cryopreservation of boar semen.

Key words: antioxidant; boar semen; cryopreservation; lipid peroxidation