Bovine nasal granuloma (atopic Rhinitis)

Ciência Rural

Ilha, Marcia Regina da Silva¹  Langohr, Ingeborg Maria¹  Stigger, Adriana Lücke¹  Riet-Correa, Gabriela¹  Barros, Claudio Severo Lombardo de¹ 

[1] Universidade Federal de Santa Maria

关键词: nasal granuloma;    granulomatous rhinitis;    atopy;    respiratory diseases;    diseases of cattle;   

DOI  :  10.1590/S0103-84782001000300016

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

Nasal granuloma affecting 13 female Jersey cattle with ages ranging from 9 months to 3-year-old occurred in a farm in Pinhal Grande, Rio Grande do Sul, Brazil. Clinical signs included serous to serosanguineous or mucous nasal discharge, snoring, sniffling, difficult in breathing, lacrimation, congestion of the vessels of the sclera and rubbing the nose against trees and other hard surfaces. Clinical signs were exacerbated by exercise. The clinical examination of 10 affected cattle revealed small nodules in the mucous membrane of the proximal portion of the nasal cavity. Cytology carried out in the nasal discharge of 9 affected cattle revealed mainly eosinophils in numbers directly proportional to the severity of clinical signs. There were no abnormalities in the hemogram. One clinically affected heifer was euthanatized and necropsied. Main gross findings were raised, firm, white, multifocal, 2-4mm in diameter polypoid nodules clustered in the proximal portion of both nasal cavities. Histologically, these nodules consisted of hyperplastic respiratory epithelium with squamous metaplasia covering a fibrovascular tissue heavily infiltrated by eosinophils and, to a lesser extent, by macrophages, and plasma cells.

【 授权许可】

CC BY-NC