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Publication type: Doctoral Thesis

Year: 2010

Author(s): Pichler, Verena

Title: Endoparasitenstatus von Neuweltkameliden in Niederösterreich und der Steiermark.

Other title: The endoparasitic fauna of South American Camelids (SACs) in two Austrian federal states Lower Austria and Styria

Source: Dissertation, Vet. Med. Univ. Wien, pp. 97.


Advisor(s):

Baumgartner Walter
Klein-Jöbstl Daniela

Reviewer(s):
Prosl Heinrich

Vetmed Research Units:
University Clinic for Ruminants, Clinical Unit of Ruminant Medicine


Graduation date: 06.10.10


Abstract:
160 faecal samples from 21 farms in Lower Austria and Styria were examined microscopically. Combined sedimentation-flotation technique, McMaster-counting and the Benedek method were used to examine the faecal samples from each New World Camelid. Grouped faecal samples were examined by applying the method of Baermann-Wetzel. To differentiate the third worm larvae, coprocultures were used. The following prevalences of helminthes were found: Eimeria alpacae/E. punoensis 59.5 - 82.5 %, Eimeria lamae 12.0 - 31.3 %, Eimeria macusaniensis 5.7 % - 14.1 %, gastrointestinal Nematodes 74.1 % - 90.6 %, Nematodirus spp. 13.9 % - 30.6 %, Nematodirus battus 5.1 % - 21.3 %, Trichuris spp. 12.0 % - 43.8 %, Capillaria spp. 8.9 % - 34.4 %, Strongyloides spp. 5.7 % - 6.3 %, Dicrocoelium dendriticum 2.1 % - 6.3 % and Fasciola hepatica 0.6 %. The level of helminth egg count differed greatly between Eimeria alpacae/E. punoensis (mean egg count of 529 OpG), Eimeria lamae (2102 OpG) and Eimeria macusaniensis (227 OpG). Despite the high prevalence, gastrointestinal nematodes had a mean egg count of only 366 EpG. The endoparasitic fauna of both federal states, Lower Austria and Styria, had similar high values for Coccidia, Gastrointestinal Nematodes and Trichuris spp., whereas Fasciola hepatica was found only in animals from Lower Austria, and with very low prevalence. Dictoycaulus viviparus and Dictyocaulus filaria showed a prevalence of 3.4 % of 29 examined faecal samples. To differentiate the following third worm larvae, 26 grouped samples were cultivated with a coproculture: Trichostrongylus (50 %), Teladorsagia (34.6 %), Cooperia (23.1 %), Camelostrongylus and Haemonchus (19.2 %), Nematodirus, Oesophagostumum and Cooperia oncophora (7.7 %). The prevalences of the 26 crias were commonly higher than that for adult animals, with the exception of Strongyloides spp. and Trematodes, not detected in crias. This study further reveals that the most effective method for routine screening analyses is the combined sedimentation-flotation technique.

Keywords:
New World Camelids / Endoparsites / Prevalences


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