Endoscopic Appearance of the Papillary Duct and Lactiferous Sinus in Cows

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  • 牛の乳頭管および乳管洞の内視鏡像
  • ウシ ノ ニュウトウカン オヨビ ニュウカン ドウ ノ ナイシキョウゾウ

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Abstract

The intraductal endoscopic examination was performed on bovine udders and teats in normal and mastitic cows, using a 0.75mm fiber-optic flexible endoscope and / or a 2.7mm rigid endoscope. Normal cases showed regularly arranged longitudial holds of the papillary duct, closed Rosettes, annular holds at the junction of the teat and gland sinuses. Submucosalvessels in the gland sinus were clearly observed and the whole surface of ductal mucous membrane was smooth and luster. Clinical and subclinical cases with mastitis showed hypertrophic and meandered holds of papillary duct, opened Rosettes, stenosed duct and irregularsurface of membrane. These findings suggest that the endoscopic examination is an useful technique for the evaluation of bovine mastitis.

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