Natural and experimental nodular dermatomycosis in chickens

Mohammed, Medhat A.; Sokkar, S. M.; Batrawi, A. M. El; Refaie, M.K.; Ahmed, A. N.

doi:10.1080/03079458008418402

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…Following our observations of A. flavus, which infects layered chickens and has shown no respiratory signs or lesions, we hypothesized that the infection occurred through contaminated food but not through the respiratory passage, and then fungal organisms are expected to spread in the different organs of the infected bird. These results also are in agreement with Barton Previous studies have shown that A. flavus was isolated from natural infections including the skin [37]. The data obtained from our study showed grayish-white skin nodules on the brisket and subcutaneous haemorrhage associated with dumpiness and immune suppression.…”

Section: Discussionsupporting

confidence: 93%

Pathology and Epidemiology of Fungal Infections in Layer Chicken Flocks

El-Sharkawy

El-Salam

Tahoun

2023

Advanced Gut & Microbiome Research

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Fungal infections have a key effect on the commercial poultry production and welfare. Infections caused by fungi and their food contaminants are zoonotic and influence food safety. Eggs and cooked meats remain major public health concerns. Therefore, this research is aimed at examining the pathology and understanding the epidemiology of fungal infection in layer chicken flocks. The study was carried out on twenty-layer flocks from Kafrelsheikh Governorate, Egypt, from January 2019 to December 2020. In total, 600 samples were collected from 100 healthy and diseased layer chickens from different organs (skin, liver, lung, kidney, spleen, and ovary). In this work, we present the clinical and pathological characteristics of some fungal pathogens (Aspergillus spp. and Fusarium spp.) in layer chicken flocks, as they are responsible for reducing the egg production. In total, 19 fungal strains were isolated from individual chickens, and these were analysed to determine the fungal species. The total proportion of fungal infections at the farm level was (3/20) 15%. The main clinical signs were emaciation and mortalities that reached 4.34 % ± 0.84 . We report the first isolation of Aspergillus piperis and Fusarium species from the ovary of poultry, which is the main reason for egg retention and multiple numerous nodules of occasional caseating centers in layer ovaries. The histopathological findings of Aspergillus infection are indicated by the presence of branched hyphae that tend to be numerous and progressive. Furthermore, we found spherules with multiple endospores of Fusarium spp. in the ovaries. Morphological and molecular identification and analysis were performed to confirm the etiological agents.

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Section: Discussionsupporting

confidence: 93%

Pathology and Epidemiology of Fungal Infections in Layer Chicken Flocks

El-Sharkawy

El-Salam

Tahoun

2023

Advanced Gut & Microbiome Research

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“…Chute et al [19] described a systemic fatal infection by Aspergillus fumigatus in White Rock cockerels, that was attributed to the contamination of the cutaneous incision performed to caponize the animals. Finally, in a case of some chickens, cutaneous aspergillosis was seen with generalized, tumor-like swellings, the infection being limited to the skin [20]. …”

Section: Discussionmentioning

confidence: 99%

Scrotal granulomatous aspergillosis in a dromedary camel (Camelus dromedarius)

Scaglione

Peano

Piga³

et al. 2017

BMC Vet Res

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BackgroundThis report describes a case of primary subcutaneous aspergillosis in a 7-year-old neutered male dromedary camel (Camelus dromedarius).Case presentationThe animal developed a large nodular lesion in the right scrotum two years after surgical intervention for neutering. The mass had a firm consistency and was painful at palpation. Histopathology revealed dermal granulomatous inflammation with a necrotic centre, surrounded by plasma cells, macrophages, neutrophils, and sparse fungal hyphae characterised by parallel cell walls, distinct septa, and dichotomous branching. Fungal culture was not performed, but a panel of mono- and polyclonal antibodies specific for different fungal genera identified the hyphae as Aspergillus sp.ConclusionsThe occurrence of subcutaneous lesions is a rare manifestation of aspergillosis in animals, and this appears to be the first case reported in the dromedary camel.

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“…In birds, skin granulomas are generally associated with bacterial, parasitic, or fungal infections. 5,13,17 Cases of avian mycobacteriosis are rare in wild birds; in psittacines, the disease is manifested by swellings around the head and neck. 13,16 Although some cases of contact dermatitis have been described in close association with feather follicles, such lesions are usually located on the plantar surface of the footpads and toes (pododermatitis) of broilers, turkeys, and Anseriformes.…”

mentioning

confidence: 99%

Sterile traumatic panniculitis in a captive Brent goose

Benoit‐Biancamano

Langlois

2020

J VET Diagn Invest

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A captive, adult female Brent goose ( Branta bernicla) with a history of severe feather picking by its mate, was presented with 0.5–2.5 cm skin nodules on the head and neck. Histologic examination revealed a well-delineated dermal mass that surrounded an intact feather follicle and was composed of lakes of proteinaceous fluid and fibrin with scattered foamy macrophages and multinucleate giant cells. No bacteria or fungi were identified with histology, microbial culture, or PCR. Sterile panniculitis is an infrequent finding in animals and traumatic panniculitis is rarely sterile.

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Natural and experimental nodular dermatomycosis in chickens

Cited by 8 publications

References 4 publications

Pathology and Epidemiology of Fungal Infections in Layer Chicken Flocks

Pathology and Epidemiology of Fungal Infections in Layer Chicken Flocks

Scrotal granulomatous aspergillosis in a dromedary camel (Camelus dromedarius)

Sterile traumatic panniculitis in a captive Brent goose

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