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Publication type: Doctoral Thesis

Year: 2007

Author(s): Fischbacher, W

Title: Untersuchungen zum Gesundheitsstatus von freilebendem Auer- und Birkwild in Österreich.

Source: Dissertation, Vet. Med. Univ. Wien, pp. 77.

Advisor(s):

Deutz Armin
Hess Michael


Abstract:
Altogether 54 wild black cock and 50 wild capercaillie out of different territories of Austria were examinated in this study, to determine their status of endoparasites and the load of heavy metalls in liver and kidneys. Parasites like Syngamus trachea, Toxoplasma gondii and Heterakis gallinarum were not found in this study. Coccidia were found in high prevalence in capercaillie (44,0 %), in smaller prevalence in black cock (11,1%). Regional differences in the prevalence of coccidia could be recognized for capercaillie. In all cases the load of coccidia was very low. The trematode Corrigia skrjabini was found the first time in high prevalence in the pancreas of capercaillie (34,0 %) and also in black cock (27,8 %), the highest load was 7 trematodes in a capercaillie and 5 trematodes in a black cock. Cestodes with a prevalence of 80,0 % in capercaillie and 61,1 % in black cock were the parasites with the highest incidence of all ¿ but negative effects on the birds health status in cause of cestodes could not be recognized. The only representative of the genus Capillaria Capillaria alpina was found in high prevalence with 62,0 % in capercaillie and with 35,2 % in black cock. The median load was 46,3 capillaria in capercaillie an 4,7 capillaria in black cock. Black cock out of the territory Spittal an der Drau showed a prevalence of 50 % capillaria but there was no capillaria found in black cock from of the territory Lienz. Ascaridia in capercaillie showed with 58,0 % a statistical significant higher prevalence then in black cock with 20,4 %. The maximal load in capercaillie was 15 Ascarides, in black cock even 47 Ascarides in one cock. The two different species Ascaridia galli and Ascaridia compar were isolated. Capercaillie shot in the year 2005 showed a statistical significant higher prevalence and abundance in Ascaridia than capercaillie shot in 2004. The median load of lead in capercaillie was 0,450 ppm in liver and 1,300 ppm in kidneys, black cock showed a median load of 0,320 ppm lead in liver and of 0,470 ppm in kidneys. A relation between the load of lead in the liver of capercaillie and their prevalence of cestodes was recognized. The median load of cadmium was 0,720 ppm in the liver and 11,880 ppm in the kidneys of capercaillie, black cock showed a median load of 0,525 ppm in liver and of 4,740 ppm in kidneys. A relation between the load of cadmium in the liver of black cock and the prevalence of Corrigia skrjabini was proved. Capercaillie showed a median load of 0,012 ppm mercury in liver and kidney tissue, black cock had an median load of 0,013 ppm mercury in liver and of 0,010 ppm in kidney tissue.

Keywords:
capercaillie / black cock / parasites / tapeworm / roundworm / heavy metal / lead / mercury / cadmium


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