ウシの無心体2例の解剖学的観察

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Two cases of bovine acardius were examined anatomically. Case 1 was a Holstein monster born together with a normal female calf. Case 2 was a mixed breed between Holstein and Japanese Black, and was born together with two normal female calves. Both monsters were covered with skin with hair and had stomodeal and proctodeal depressions. Case 1 was attached to the amnion throught an umbilical cord, while in case 2 the ventral surface of the monster had no skin and was attached directly to the amnion. Internally case 1 was composed of connective and fat tissues, blood vessels, striated muscle fibers and a tooth, and case 2 was composed of connective and fat tissues, blood vessels, striated muscle fibers, lymphoid tissue and alveolar gland. Both monsters contained some small pieces of bone, but had no skull or skeleton, therefore they were diagnosed as acardius amorphus.ウシの無心体2例を解剖学的に検索した．症例1は正常メスとともに娩出されたホルスタイン種の奇形体であった．症例2はホルスタイン種と黒毛和種の雑種で，2頭の正常メスとともに娩出されたものであった．2例とも被毛を備えた皮膚で包まれ，口窩と肛門窩が認められた．症例1は臍帯で羊膜に連なり，症例2は寄形体の皮膚を欠く腹面が直接羊膜に付着していた．症例1の内部は結合組織，脂肪組織，血管，横紋筋線維および歯で構成され，症例2は結合組織，脂肪組織，血管，横紋筋線維，リンパ組織および胞状腺で構成されていた．2例とも小骨片が存在していたが，頭骨や骨格は無く，無形無心体と診断された．

ウシの無心体2例の解剖学的観察

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