8. Anti-quality Components of Grasses
Perennial grasses can contain a variety of antiquality factors that negatively impact animal performance [GIS-19]. Plant species, management, and environment all play a role in whether a particular antiquality factor will be present in a concentration that results animal health problems. Toxic compounds may be naturally occurring in the plant, or may be the result of infestation by a microorganism or insect.
Old cultivars of tall fescue were infected with an endophytic fungus that caused a variety of health problems, and gave fescue a bad reputation.