Unfortunately, there are a lot of new meat goat producers who have never seen or even heard of the malady, but they sure may this year. Kleingrass toxicity is closely related to soil moisture. Moist soils and good growing conditions increase the toxicity, while dry soils and poor growing conditions lessen the toxicity. Older leaves in the tops of kleingrass plants have only a low concentration of the toxin, but sheep and goats will look for the young, tender new leaves at the plant's base. Ueckert noted that kleingrass hay is also definitely toxic to horses.
Cattle appear to have no problem with kleingrass hay or the growing plants.