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Type of publication: Doctoral Thesis
Type of document:

Year: 2011

Authors: Kreiner, Tanja

Title: Einfluss einer Toltrazurilbehandlung auf klinische und parasitologische Parameter bei Saugferkeln unter Feldbedingungen.

Other title: Influence of toltrazuril treatment on parasitological parameters and health performance of piglets in the field - an Austrian experience

Source: Dissertation, Vet. Med. Univ. Wien, pp. 90.


Advisor(s):

Joachim Anja

Reviewer(s):
Ritzmann Mathias

Vetmed Research Units:
Institute of Parasitology


Graduation date: 17.11.11


Abstract:
Porcine coccidiosis caused by Isospora suis is one of the leading causes of neonatal diarrhea in suckling piglets. Currently the only registered drug for metaphylaxis is toltrazuril. To evaluate the effect of treatment on piglet health and oocyst excretion 14 pig-producing farms were examined between May 2007 and February 2009. Eight farms (258 litters) regularly applied toltrazuril while seven (265 litters) did not. One farm used toltrazuril at the beginning of the study and stopped later so it was included in both groups. In both groups animals had less diarrhea and lower health scores during the second sampling, but the treated piglets were always significantly healthier and had less diarrhea. In the first round of sampling 17.8% of the individual samples from untreated piglets were positive for oocysts while in the treated piglets only 0.4% shed oocysts. At the second sampling only 2.1% of the untreated animals and none of the treated piglets excreted I. suis. While the discontinuation of the toltrazuril treatment had no influence on diarrhea or piglet health a low level of excretion was noticed after stopping it. There was an increased risk for infected piglets to develop diarrhea and poor health in untreated piglets, and poor hygiene without disinfection was identified as a risk factor for poor health, diarrhea and oocyst excretion. The risk of poor health and diarrhea was also increased for piglets under poor hygienic conditions receiving toltrazuril, so both metaphylaxis of coccidiosis and good hygiene are necessary to effectively control neonatal diarrhea. The costs of treatment are considerably lower than the estimated financial production losses. Therefore, treatment is recommended for farms where clinical coccidiosis is diagnosed.

Keywords:
Isospora suis / pig / coccidiosis / toltrazuril / control / metaphylaxis


Publication(s) resulting from University thesis:

Kreiner, T; Worliczek, HL; Tichy, A; Joachim, A (2011): Influence of toltrazuril treatment on parasitological parameters and health performance of piglets in the field--an Austrian experience. Vet Parasitol. 2011; 183(1-2):14-20

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