Korean Journal of Veterinary Research 2002;42(4):437-442.
The rudimentum of the ductus venosus in Korean native cattle (Bos taurus coreanae): case report
Chong-Sup Kim1, Kyu-Woan Cho2, Myung-Deuk Suh1, Chung-Kil Won1
1Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University
2College of Veterinary Medicine, Chungnam National University
한우(Bos taurus coreanae)의 정맥관흔적(rudimentum of ductus venous)의 증례
김종섭1, 조규완2, 서명득1, 원청길1
1경상대학교 수의과대학 동물의학연구소
2충남대학교 수의과대학
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.
Key Words: Cattle, Ductus venosus, Rudimentum


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