March 2, 2012 07:07
I have had a number of calls lately about horses on a regular, consistent deworming program actually passing worms.
Normally we would have a significant snow pack covering the ground, preventing
the horses from picking up parasite eggs. Horses that are exposed to grassy
pasture are coming in contact with more eggs than normal.
The solution is to give an additional wormer now, followed by the normal wormer in April/May.