Comparación de cuatro sistemas de muestreo de tierra para determinar contaminación de áreas con huevos de Toxocara canis

four soil sampling systems were compared to determine the most representative system to find out the contamination of areas with toxocara canis eggs. in january and february 2006 there were obtained simultaneously 8 accumulative soil samples in courtyards of 12 houses of the city of valdivia with maintained bitches with puppies. the samples were processed in the veterinary parasitology laboratory of the universidad austral de chile. t. canis eggs were found in all courtyards areas. 92 of the analysed soil samples (95.8%) were positive. one of the sampling systems differed (p = 0.13) while the other three were similar (p > 0.05). one of them was choose because the recovery oft. anis eggs was nearly 100% of the mean found in every courtyard