Selective anthelmintic therapy of horses in the Federal states of Bavaria (Germany) and Salzburg (Austria): an investigation into strongyle egg shedding consistency.

摘要: For 9 consecutive months (March-November 2008), faecal samples were collected monthly from 129 horses residing within 40 km of Salzburg, Austria. Samples analysed quantitatively using a modified McMaster egg counting technique. Whenever count (FEC) result exceeded 250 eggs per gram (EPG), the horse was treated with pyrantel, ivermectin or moxidectin. In 52 (40.3%), no strongyle ever detected over course months. 39 (30.2%), in at least 1 sample, but never EPG. The remaining 38 (29.5%) once response to FEC that As this selective anthelmintic scheme, total number treatments reduced 54% administered same previous year. Both maximum and mean dropped significantly after initiation study. A statistically significant, negative correlation demonstrated between its age. Pasture hygiene appeared reduce FECs, effect not significant. magnitude initial correlated FECs subsequent 8 (p<0.01). relationship observed for first 2 samples. Furthermore, which required several had higher greater than received only one treatment. These results suggest treatment accomplished pasture contamination eggs, while simultaneously decreasing treatments. Sustained implementation strategy has potential selection pressure resistance. reported herein will assist equine practitioners designing monitoring sustainable programs.