Two Cases of Chronic Atrophic Abomasitis in Dairy Cattle

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  • 乳牛の慢性萎縮性第四胃炎の2例
  • ニュウギュウ ノ マンセイ イシュクセイ ダイ4イエン ノ 2レイ

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Abstract

Two dairy cows with chronic atrophic abomasitis were investigated clinically and pathologically. The cows were emaciated; excreted undigested, soft feces; and demonstrated subcutaneous edema. In addition, they were hypoproteinemic, hyponatremic, hypocalcemic, hypocholesterolemic, and hypogastrinemic. Visual examination showed the abomasum to be pale yellow-white with pyloric ulcers and multifocal hemorrhage interpreted to indicate chronic inflammation. Histopathological examinations showed the abomasal mucosa to be thin and the fundic and pyloric glands to be atrophic. Mononuclear cells had infiltrated the lamina propria of the pylorus to a remarkable extent. G cells had decreased in number in the pylorus and had migrated to the upper layer of the mucosa. Peanut-lectin (PNA) staining in the pyloric glands was negative. Conceivably, atrophic pyloric and fundic glands, altered G-cell location, and reduced PNA staining may be associated with the digestive disturbance.

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