In 1998 a questionnaire was sent to 2280 dairy cattle farmers in Flanders, Belgium, to investigate whether the pasture management included measures to control gastrointestinal nematodes, whether chemoprophylaxis was applied and whether chemoprophylaxis and grazing management were integrated, rather than superimposed. Information was also gathered on the control measures against lungworm and liver fluke. On 82% of the farms, the grazing management included preventive measures against gastrointestinal nematodes, such as rotational grazing (21.8%), grazing on aftermath (57.0%), or late turnout (26.1%). Nevertheless, the calves received preventive anthelmintic treatment on 69.9% of the farms. At least on 18.3% of the farms preventive pasture management was combined with intensive chemoprophylaxis, which may be ‘overprotective’. On the other hand, on 7.4% of the farms no protective measures against gastrointestinal nematodes were taken. Only 15.1% of the farmers vaccinated their calves against Dictyocaulus. Cattle were treated against liver fluke on 12.1% of the farms.