Brachyspira-fertozöttség vizsgálata novendé kkacsa-állományokban

Translated title of the contribution: Brachyspira-infection in young duck flocks

Thuma Ákos, E. Ivánics, Juhászné Kaszanyitzky Éva, A. Dán, Glávits Robert

Research output: Contribution to journalArticle

Abstract

In the past years, the authors described avian intestinal spirochaetosis in adult duck and goose flocks. In both of the species the morbidity and mortality occurred in the second half of the laying period, and the symptoms were fibronecrotic typhlocolitis, and subacute nephropathy. In this report the presence and the pathological role of spirochaetes were studied in young duck flocks. A total of 32 birds from 3 four-five weeks old meat duck and 1 young breeder duck flocks were investigated. The colonisation of the large intestine with Brachyspira spp. was confirmed by immunohistochemical, bacteriological, and molecular biological (PCR) methods. The majority of the isolated 10 strains (7 isolates) proved to be B. pilosicoli. The increased mortality began usually at 3-4 weeks of age, and reached about 7-9% in the affected flocks. During the necropsy and the histopathological examination of the birds the intestinal lesions (fibronecrotic inflammation) were less severe in these cases than in the form which can be seen in the adult diseased birds. In addition, in one flock there were pathological lesions detectable (degeneration and dystrophy in the liver and tubulamephrosis in the kidneys) typically in alimental mycotoxicosis, in the other flock there was circovirus infection, and in the third flock Riemerella anatipestifer infection. There was an opportunity to investigate more birds from the affected young breeder duck farm at 8 and 9 months of age. The dissected birds showed the same pathological lesions (fibronecrotic enteritis, subacute nephropathy), as were detectable in the adult actively breeding sick ducks. The results of this study indicates that the factors, as not adequate housing conditions, poor quality of the feed (mycotoxin contamination), or the immunosuppressant (eg. circovirus) infection can predispose the development of avian intestinal spirochaetosis, and the disease can occur with other diseases. For this reason the importance of the intestinal spirochaetosis in young (four-five weeks old) ducks - in accordance with the authors' experiences - could be considered as co-infection, in contrast with adult breeder duck flocks.

Original languageHungarian
Pages (from-to)464-470
Number of pages7
JournalMagyar Allatorvosok Lapja
Volume133
Issue number8
Publication statusPublished - Aug 2011

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Brachyspira
Ducks
ducks
flocks
Infection
infection
Birds
Circoviridae Infections
Circovirus
lesions (animal)
birds
kidney diseases
Riemerella
Mycotoxicosis
Bird Diseases
Riemerella anatipestifer
duck meat
Treponema
mycotoxicosis
Geese

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Brachyspira-fertozöttség vizsgálata novendé kkacsa-állományokban. / Ákos, Thuma; Ivánics, E.; Éva, Juhászné Kaszanyitzky; Dán, A.; Robert, Glávits.

In: Magyar Allatorvosok Lapja, Vol. 133, No. 8, 08.2011, p. 464-470.

Research output: Contribution to journalArticle

Ákos, Thuma ; Ivánics, E. ; Éva, Juhászné Kaszanyitzky ; Dán, A. ; Robert, Glávits. / Brachyspira-fertozöttség vizsgálata novendé kkacsa-állományokban. In: Magyar Allatorvosok Lapja. 2011 ; Vol. 133, No. 8. pp. 464-470.
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