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首页> 外文期刊>Case Reports in Veterinary Medicine >Congenital Absence of a Teat in a Japanese Black Heifer
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Congenital Absence of a Teat in a Japanese Black Heifer

机译：日本黑小母牛的先天性乳头缺失

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A case of Japanese Black heifer with a congenital absence of teat (athelia) was observed at Highashi-Hiroshima Agricultural High School, Hiroshima Prefecture, Japan. The heifer was born after transfer of embryo from Japanese Black cattle. The sire of the heifer was a proven Japanese Black. The birth weight of the heifer was 27 kg. On physical examination of the heifer at 21 months after birth, the teat at fore left was absent and the remaining three teats were normal in shape without any physical abnormalities. Per rectal palpation of the genital organs revealed the normal cervix and uterine horns. It was difficult to palpate the ovaries due to the fat around the organs. Blood samples were taken for cytogenetic and DNA testing. The heifer had normal chromosomal set. The heifer was culled due to its mammary abnormality. This might be the first to report a case of congenital absence of a teat in Japanese Black heifers.
机译：在日本广岛县Highashi-Hiroshima农业高中观察到一例日本黑小母牛先天性无奶头（无鞘膜）的病例。小母牛出生于日本黑牛的胚胎移植后。小母牛的父亲是日本黑鸽。小母牛的出生体重为27 kg。在出生后21个月对小母牛进行身体检查时，左前乳头不存在，其余三只乳头形状正常，没有任何身体异常。生殖器器官的直肠触诊显示正常的子宫颈和子宫角。由于器官周围的脂肪，很难触及卵巢。采集血样进行细胞遗传学和DNA测试。小母牛的染色体排列正常。小母牛由于其乳腺异常而被淘汰。这可能是第一个报告日本黑小母牛先天性无奶头的病例。

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