Pontbriand D,Howard J G,Schiewe M C,et al.Effect of cryoprotective diluent and method of freeze-thawing on survival and acrosomal integrity of ram spermatozoa.Cryobiology,1989,26(4):341-354.
Royehoughury P N,Gowda H C,Pareek P K.Effect of different glycerol levels on the release of glutamic oxaloaeetic transaminase(GOT) from deep frozen ram spermatozoa.Andmlogia,1975,7(3):211-214.
Foulkes J A,Watson P A.Hyaluronidase activity in seminal plasma as a method of assessing bull sperm integrity.Journal of Reproduction and Fertility,1975,43:349-353.
[7]
Crabo B G,Graham E F.Correlation between some laboratory methods for evaluation of boar semen after freezing.Proceedings of 7th International Congress on Animal Reproduction and Artificial Insemination.Munich:National Association of Animal Breeders,1972:1639-1644.
Olesen I.Effects of cervical insemination with frozen semen on fertility and litter size of Norwegian sheep.Livestock Production Science,1993,37(1-2):169-184.
[10]
Thundathil J,Palasz A T,Mapletoft R J,et al.An investigation of the fertilizing characteristics of pyriform-shaped bovine spermatozoa.Animal Reproduction Science,1999,57:35-50.
[11]
Waelders H.Fundamentals and recent development in cryopreservation of bull and boar semen.Veterinary Quarterly,1997,19:135-138.
[12]
Saacke R G,White J M.Semen quality tests and their relationship to fertility.Proceedings of 4th Technical Conference on Artificial Insemination and Reproduction.Columbia,Mo:National Association of Animal Breeders,1972:22-27.
[13]
Januskauskas A,Johannisson A,Rodriguez-Martinez H.Assessment of sperm quality through fluorometry and spermchromat in structure assay in relation to field fertility of frozen-thawed semen from sedish AI bulls.Theriogenology,2001,55:947-961.
[14]
Paulenz H,dny T,Sderquist L.Comparison of fertility results after vaginal insemination using different thawing procedures and packages for frozen ram semen.Acta Veterinaria Scandinavica,2007,49:26-32.
[15]
Maxwell W M C,Evans G,Mortimer S T,et al.Normal fertility in ewes after cervical insemination with frozen-thawed spermatozoa supplemented with seminal plasma.Reproduction,Fertility and Development,1999,11:123-126.
[16]
Graham J K,Moc E.Fertility evaluation of frozen/thawed semen.Theriogenology,2005,64(3):492-504.
Watson P F.Cooling of spermatozoa and fertilizing capacity.Reproduction in Domestic Animal,1996,31:135-140.
[20]
Sukhato P,Thongsodseang S,Utha A,et al.Effects of cooling and warming conditions on post-thawed motility and fertility of cryopreserved buffalo spermatozoa.Animal Reproduction Science,2001,67:69-77.
