9Fujisaki Y, Murakami Y, Suzuki H. Estblishment of an attenuated strain of porcine parvovirus by serial passage at low temperature[J]. Natl Inst Anim Heslth Q (Tokyo), 1982, 22(1):1-7.
10Fujisaki Y, Murakami Y. Immunity to infection with porcine parvovirus in pigs inoculated with the attenuated HT-strain[J]. Nat Inst Anim Heslth Q (Tokyo), 1982, 22 ( 1 ) : 36-37.
3ARUNAVA H,HARRIS T R,KVASNICKA W G,et al.Factors influencing rates of adoption of trichomoniasis vaccine by Ne- vada range cattle producers[J],Journal of Agricultural and Resource Economics,1997,22(1):174-190.
4NELL W T,SCHWALBACH L.Adoption of veterinary technologies amongst sheep and goal farmers in Qwawqa,South Africa [C].Processing of the 13th International Farm Management Congress.Netherlands,2002.
5OGURTSOV V A,ASSELDONK P M,HUlRNE B M.Purchase of catastrophe insurance by Dutch dairy and arable farmers[J].Review of Agricultural Economics,2009,31(1):143-162.
6SIMMONS P.Perspectives on the 2003 and 2004 avian influenza outbreak in Balland Lombok[C].Processing of the 49th Annual Conference of the Australian Agricultural and Resource Economics Society:New South Wales,2005.