【摘要】 用草鱼出血病毒人工感染经鲤鱼总ＤＮＡ处理的草鱼和普通草鱼，在剂量为０．２ｍＬ／尾时，前者的ＬＤ５０较为一致，为１０－２．９７，后者的为１０－３．５６～１０－３．７２，前者比后者的抗病力强３．８９～５．８９倍，潜伏期长１～２ｄ，死鱼持续时间短１～２ｄ．证明经鲤鱼总ＤＮＡ处理的当年草鱼对草鱼出血病病毒的抗性显著增强更多还原

【Abstract】 Transgenic grass carp and common grass carp were artificially infected with grass hemorrhage virus.The LD 50  of the former is 10 -2.97 ,the latter is 10 -3.56 ～10 -3.72 when the same doses of 0.2 mL per capita were given.The antiviral ability of the former is 3.89￣5.89 times higher.The lantent period is 1￣2 d longer and the death duration is 1￣2 d shorter than that of the latter.The result suggests that the antiviral ability to carp hemorrhage virus of transgenic grass carp with carp general DNA is significantly increased.更多还原