Yoso-tama-no-kakehashi; the first Japanese guidebook on raising rats.

  title={Yoso-tama-no-kakehashi; the first Japanese guidebook on raising rats.},
  author={Takashi Kuramoto},
  journal={Experimental animals},
  volume={60 1},
During the 18th century, raising the "nezumi" rodent became so prevalent in Japan that two guidebooks were published on the topic. The first guidebook was entitled Yoso-tama-no-kakehashi (1775) and the second was entitled Chinganso-date-gusa (1787). It remains unclear in these texts whether the term nezumi was used to refer to the rat (Rattus norvegicus) or the mouse (Mus musculus). In this review, I explore Yoso-tama-no-kakehashi (English translation: A bridge to obtaining novel jewel-like… 

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