How to prevent spring sheep blindness? These preventive measures must be taken well

Sheep that eat the roots of the toxic daylily (Hemerocallis minor) will suffer poisoning. The clinical signs are characterized by blindness in both eyes, dilated pupils, bladder paralysis with urine retention, and general paralysis, which people call "blindness disease". In early spring, when pasture grass is scarce between seasons and the daylily is sprouting, grazing sheep often become poisoned after eating it, and generally die after 2 to 4 days. Mildly poisoned animals can recover, but those with blindness in both eyes and dilated pupils cannot recover.

For this disease, there is currently no effective antidote, and the main approach is to carry out prevention well. The roots of transplanted or discarded Hemerocallis minor should not be thrown at the edge of fields or in the fields; they should be collected and destroyed, and sheep must not be allowed to eat them. It is strictly forbidden to drive sheep to graze in the dry-grass season on field ridges, field edges, or grassland where Hemerocallis minor grows. Each year, these pasture lands should be used for grazing only after the pasture grass turns green again in April.