Horses will:
e) b and c
Poisonous plants should be considered as the potential cause of disease, especially if the following situations exist:
1. Forage supply in a pasture is sparse due to overgrazing, drought, or poor early season growth.
2. Animals have recently been moved into a new pasture.
3. Animals have been released into a new pasture when hungry.
4. Herbicides have recently been used to control weeds.
5. Pasture has recently been fertilized with nitrogen.