5De Leeuw F E, Colenbrander B, Verkleij A J. The role membrane damage plays in cold shock and freezing injury[J]. Reprod Domest Anim, 1990, Suppl 1: 95-104.
6Johnson L A, Weitze K F, Fiser P, et al. Storage of boar semen[J]. Anim Reprod Sci, 2000, 62 (1-3): 143-172.
7Zou C X, Yang Z M. Evaluation on sperm quality of freshly ejaculated boar semen during in vitro storage under different temperatures[J]. Theriogenology, 2000, 53 (7): 1477-1488.
8Althouse G C, Wilson M E, Kuster C, et al. Characterization of lower temperature storage limitations of fresh-extended porcine semen[J]. Theriogenology, 1998, 50 (4): 535-543.
9Maxwell W M, Johnson L A. Physiology of spermatozoa at high dilution rates: the influence of seminal plasma[J]. Theriogenology, 1999, 52 (8): 1353-1362.
10Maxwell W M, Welch G R, Johnson L A. Viability and membrane integrity of spermatozoa after dilution and flowcytometric sorting in the presence or absence of seminal plasma[J]. Reprod Fertil Dev, 1996, 8 (8): 1165-1178.
