Producers who use fescue in grazing pastures have growing concerns about the impact of fescue toxicosis on milk production, writes Carmen Burner. Tall fescue, a perennial grass, is found in 15 states. It is grown for benefits such as drought tolerance and resistance to various insects, viruses and fungal diseases.
A fungal endophyte Neotyphodium coenophialum found in about 75 percent of fescue stands helps the grass survive. While good for the grass, it can be detrimental to cattle because it produces a toxic ergot alkaloid with potent biological effects, which when overconsumed by livestock can lead to fescue toxicosis.
Source: Progressive Forage, March 18, 2024. Link.