Organic EprintsWirken sich Auslauf- und Einstreumanagement auf den Wurmbefall von Legehennen aus?VeronikaMaurerauthorZivileAmslerauthorErikaPerlerauthorFelixHeckendornauthorThe aim of our experiments was to investigate the transmission and infectivity of the two main helminth parasites of poultry (Ascaridia galli and Heterakis gallinarum) under different run and litter management regimes. In experiment (a) two stocking rates were simulated in outdoor runs and the effect of a simple management practice (mowing) on helminth transmission was studied during two subsequent flocks. Stocking rate seemed not to change helminth transmission patterns and repeated mowing of runs did not reduce helminth infections. Lower stocking rates led to a substantial improvement of the run vegetation. In experiment (b) two litter management regimes (replace or add litter material) were compared to unmanaged litter with regard to parasitological parameters and water content of the litter. The regimes had no significant effect on water content or on parasitological parameters. These results suggest that positive effects of run and litter management regimes on helminth infections of laying hens are often overestimated in practice. Health and welfare2009Conference paper, poster, etc.

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