巴西东北部鸵鸟(Struthio camelus)亲眼病暴发

IF 0.8 4区 农林科学 Q3 VETERINARY SCIENCES Pesquisa Veterinaria Brasileira Pub Date : 2023-01-16 DOI:10.1590/1678-5150-pvb-7146
Raquel Annes Fagundes Silva, R. C. Alves, Y. G. Soares, J. S. Ferreira, R. G. Olinda, Lucas J.M. Santos, G. J. Galiza, A. Dantas
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引用次数: 0

摘要

摘要:本研究探讨了发生在巴西东北部塞埃尔州和北巴西大德州的两起鸵鸟眼部感染疫情的流行病学、临床和病理特征。鸵鸟养殖被归类为半集约化养殖,可以自由进出堰和河。感染临床表现为膜膜炎、泪溢、眼睑水肿、眼充血、眼球破坏、消瘦、死亡,感染期8 ~ 16个月。肉眼可见眼睑及结膜增厚,有橙色寄生虫侵袭。组织学上,病变表现为淋巴浆细胞增生和嗜异性增生,多灶性合并,伴哈德氏腺增生和扩张的中度、慢性结膜炎,以及大量寄生虫。寄生虫呈椭圆形,扁平,有口腔吸盘、髋臼和含有针状体的厚角质层。亲眼病的诊断是基于流行病学、临床和病理学结果,以及结膜囊中寄生虫的形态特征,这些寄生虫与吸虫相似。巴西东北部城市和农村饲养的鸵鸟可发生亲眼病,可能与鸟类接触受污染的水有关。其特点是严重的结膜炎,可导致眼球脱落和动物死亡。
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Outbreaks of philophthalmiasis in ostriches (Struthio camelus) in Northeast Brazil
ABSTRACT: This study discusses the epidemiological, clinical, and pathological characteristics of two outbreaks of ocular infection in ostriches (Struthio camelus) caused by the trematode Philophthalmus sp. The outbreaks occurred in the states of Ceará and Rio Grande do Norte in Northeast Brazil. Ostrich farming was categorized as semi-intensive farming with free access to the weir and river. The clinical symptoms for infection included nictitating membrane inflammation, epiphora (tearing), eyelid edema, ocular congestion, eyeball destruction, emaciation, and death, and the infection period ranged from 8 to 16 months. Macroscopically, thickening of the eyelids and conjunctiva were observed, with orange parasites infestation. Histologically, the lesions were characterized as lymphoplasmacytic and heterophilic, multifocal to coalescing, moderate, chronic conjunctivitis associated with hyperplasia and ectasia of the Harderian gland, and numerous parasites. The parasites were oval and flattened with an oral suction cup, acetabulum, and thick cuticle containing spicules. The diagnosis of philophthalmiasis was based on epidemiological, clinical, and pathological findings associated with the morphological characteristics of the parasites present in the conjunctival sacs which were similar to the trematode Philophthalmus sp. Philophthalmiasis can occur in ostriches raised on urban and rural properties in Northeastern Brazil, probably associated with the contact of birds with contaminated water, and is characterized by severe conjunctivitis that can result in the loss of the eyeball and death of the animals.
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来源期刊
Pesquisa Veterinaria Brasileira
Pesquisa Veterinaria Brasileira 农林科学-兽医学
CiteScore
1.30
自引率
16.70%
发文量
41
审稿时长
9-18 weeks
期刊介绍: Pesquisa Veterinária Brasileira - Brazilian Journal of Veterinary Research (http://www.pvb.com.br), edited by the Brazilian College of Animal Pathology in partnership with the Brazilian Agricultural Research Organization (Embrapa) and in collaboration with other veterinary scientific associations, publishes original papers on animal diseases and related subjects. Critical review articles should be written in support of original investigation. The editors assume that papers submitted are not being considered for publication in other journals and do not contain material which has already been published. Submitted papers are peer reviewed. The abbreviated title of Pesquisa Veterinária Brasileira is Pesqui. Vet. Bras.
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