1919—1920年在比利时布拉帮特附近用本地猪与法国的贝衣猪(Beyeux)杂交改良,后又导入英国的泰姆沃斯猪(Tamworth)的血液,1955年被欧洲各国所公认,是近十几年来欧洲较为流行的猪种。
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它们是有选择地从大肚猪(pot-bellied)、新西兰困困猪(kune kune)、格洛斯特古老斑点猪(Gloucester Old Spot)以及汤沃斯猪(Tamworth)杂交而成,以获得娇小的身材——发育成熟后,它们站立时身高比一英尺多一点点。
They are selectively bred from a mix of pot-bellied, New Zealand kune kune, Gloucester Old Spot and Tamworth pigs until they attain tiny proportions – fully grown, they stand at just over a foot.
尼古拉斯说,所有的死亡病例都在墨西哥,这可能说明墨西哥是猪流感的源头。
All the deaths have been in Mexico, which could indicate that the illness emerged there, Nichols said.
伊波拉—赖斯顿病毒在猪农场的出现增加了人类接触和感染这种病毒的几率。
The presence of Ebola-Reston virus on pig farms increases the odds of human exposure and infection.
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