Selective or prophylactic deworming? What is better for my horse and what should I bear in mind?

Should my horse be chemically dewormed in spring? How do I find out and what do I need to bear in mind?

Every autumn, the debate in numerous stables picks up again: should the horses be dewormed? Thankfully, the concept of selective deworming is gaining ground across more stables. This entails faecal samples being tested to determine the presence of...