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Publication type: Diploma Thesis

Year: 2010

Author(s): Pyrek, Rosmarie

Title: Erhebung von Ursachen für Ohrrand-, Ohrspitzen- und Flankennekrosen.

Other title: Survey of Causes of Ear Edge-,Ear Tip-and Flank-Necrosis

Source: Diplomarbeit, Vet. Med. Univ. Wien, pp. 49.


Ritzmann Mathias

Sommerfeld-Stur Irene

Vetmed Research Units:
University Clinic for Swine

Graduation date: 27.09.10

In this diploma thesis, a survey on the frequency of occurrence of ear tip, ear edge- and flanknecrosis, clinical symptoms, severity, course, vaccination status, feeding, housing and genetics of affected pigs was carried out. Futhermore, already present results are used to clarify the etiology better. In addition to various parasitic (Sarcoptes scabei var suis), viral (PRRSV, PCV-2) and bacterial (Staphylococcus spp., Streptococcus spp. Spirochetes, Mycoplasma suis) agents, there are also alimentary causes (Zinc and biotin deficiency) and endotoxins discussed as a trigger for the occurrence of ear tip, ear edge and flank-necrosis. Fungal toxins (mycotoxins, DON, ZON, T2 toxin, HT2 toxin) and mistakes in housing systems (overcrowding, poor ventilation and food quality) are mentioned as another possible causative factor.

Pig - Ear tip necrosis – Ear edge necrosis – Flank necrosis – Questionnaire – multifactorial aetiology

Publication(s) resulting from University thesis:

Lang, C; Pyrek, R; Voglmayr, T; Waxenecker, F; Hofstetter, U; Bruns, G; Ritzmann, M (2011): Data collection for the investigation of the aetiology of ear margin, ear tip and flank necroses of pigs using questionnaires. Tieraerztl Umsch (66), 4 150-156.

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