[美国《农业研究》一九七六年二十五卷二期十五页报道]小母猪往往在妊娠期显然很健康,是产仔时仔猪异常小,体弱,或出生后死亡或许是干化,而随之无故流产。美国农业研究局兽医人员门奇林指出,上述一个主要原因是猪小病毒感染。与母猪生殖失败有关的其他病毒是肠病毒、假狂犬病病毒、日本B型脑炎病毒、猪霍乱病毒和猪流感病毒。 [American Journal of Agricultural Research, Volume 25, Issue 2, Issue 15, 1976] A gillet is often clearly healthy during pregnancy, when the litter is abnormally small, infirm, or died after birth. Dry, but without any reason abortion. Menkihirin, a veterinary officer at the Bureau of Agricultural Research, said one major reason for the above is the presence of porcine parvovirus. Other viruses associated with sow reproductive failure are enterovirus, pseudorabies virus, Japanese B encephalitis, porcine cholera virus and swine influenza virus.