The rudimentum of the ductus venosus in Korean native cattle (Bos taurus coreanae): case report

한우(Bos taurus coreanae)의 정맥관흔적(rudimentum of ductus venous)의 증례

  • Kim, Chong-Sup (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Cho, Kyu-Woan (College of Veterinary Medicine, Chungnam National University) ;
  • Suh, Myung-Deuk (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University) ;
  • Won, Chung-Kil (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
  • 김종섭 (경상대학교 수의과대학 동물의학연구소) ;
  • 조규완 (충남대학교 수의과대학) ;
  • 서명득 (경상대학교 수의과대학 동물의학연구소) ;
  • 원청길 (경상대학교 수의과대학 동물의학연구소)
  • Accepted : 2002.12.06
  • Published : 2002.12.30

Abstract

The observations of the anatomical closure of the ductus venosus (DV) and vestige of DV were studied in 22 cattle, ranging from 210-day-old fetus to 3-years old Korean native cattle. Vinylite solution was injected into the hepatic, portal, umbilical veins and caudal vena cavae of 22 specimens for vinylite corrosion casts. The DV originated at the confluence of the umbilical and portal veins and emptied into the left hepatic vein or posterior vena cava. The DVs were persisted in a 210-day-old fetus, a 240-day-old fetus, and a 270-day-old fetus. Two newborns, two 2-year-old and two 3-year-old cattle had no rudimentum of DV (6 cases, 31.58%). However, vestiges of DV in varying sizes were observed in a 14-day-old, a 3O-day-old, two 180-day-old and nine adult cattle (13 cases, 68.42%). The lengths of vestiges of DV were about 4.97~99.66 mm. Therefore, the present study demonstrates that DV in cattle can be degenerated during the late period of a pregnancy.

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