3Sexton J T.Preservation of fowl semen in liquid nitrogen-An improved method[J].Poultry Sci,1978,19:187~194
4Polge C.Functional survival of fowl spermatozoa after freezing at -70 ℃[J].Nature,1951,(167):949~950
5Schramm.Deep freezing preservation of cock semen for reproduction of gene reserve populations and international sperm exchange[J].Poultry Sci,1991,(59):1595~1598
6Ohara T,SatoT,Shimizu.Commercial Chicken Production Manual[J].Poultry Sci,1990,79(10):1478~1484
7Lake P E,Ravie O,Waddington D.Some effects of the composition of inseminated semen and the site of its deposition on fertility in Gallus domesticus[J].Animal Reproduction Science,1985,9(3):273~284
8Graham J,Wishart,Frances H,Palmer.The effect of cryopreservation at-196°C on the viability of fowl and Turkey spermatozoa assessed in vitro[J].Animal Reproduction Science,1986,10(4):317~324
9Duplaix M,Sexton T J.Effects of prefreeze treatment on the fertilizing capacity of unfrozen and frozen chicken semen:extender charasteristics and dilution method[J].Poultry Sci,1983,62:2255~2260