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脱脂的米在牛群中造成中毒

Fabiano da Rosa Venancio¹, Franklin Riet-Correa², Eliza S V Sallis³

¹Veterinary School, Federal University of Pelotas, Campus Capão do Leão, Capão do Leão, RS, 96010-900, Brazil.

Journal of comparative pathology

|June 7, 2025

概括

脱脂大米 (DRB) 可以导致牛皮炎. 食DRB高达0.5%的体重是安全的,但更高的剂量 (1.8-2%) 诱导皮肤病变和潜在的中毒.

科学领域:

兽医皮肤病学兽医皮肤病学
动物营养动物营养
毒理学毒理学毒理学

背景情况:

脱脂大米 (DRB) 导致牛皮炎,主要影响后肢.
在巴西和乌拉圭报告的疫情患病率高 (10-100%).

研究的目的:

确定DRB的安全养水平.
以追溯的方式调查DRB中毒疫情.
分析疾病流行病学和病原性.

主要方法:

实验性繁殖使用14只交叉品种的牛在0.5%,1%和2%的体重中食DRB.
对照组在没有DRB的情况下食本土牧场.
临床观察和损伤评估.

主要成果:

DRB补充剂导致1.8-2%的体重含量率导致皮肤病变.
在牛的饮食中,DRB的安全含量率高达0.5%的体重.
病变表明涉及T淋巴细胞的IV型过敏反应.

结论:

DRB中毒是可重现的,并且与特定的饮食含量率有关.
建立安全的养限制对于预防牛皮炎至关重要.
病原发生涉及免疫中介反应,特别是T淋巴细胞的参与.

关键词:

牛群是牛群,牛群是牛群,牛群是牛群.没有脂肪的米皮肤炎是一种皮肤炎.第四类过敏性过敏症.

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