Fescue toxicosis
Most of the tall fescue pastures in the United States are infected by an endophyte, N. coenophialum. The fungus derives nutrients from the plant while supplying the plant with toxins for defense. The most detrimental toxins for animals in tall fescue are ergopeptine alkaloids, especially ergovaline....
Saved in:
Published in | The Veterinary clinics of North America. Equine practice Vol. 17; no. 3; p. 567 |
---|---|
Main Author | |
Format | Journal Article |
Language | English |
Published |
United States
01.12.2001
|
Subjects | |
Online Access | Get more information |
Cover
Loading…
Summary: | Most of the tall fescue pastures in the United States are infected by an endophyte, N. coenophialum. The fungus derives nutrients from the plant while supplying the plant with toxins for defense. The most detrimental toxins for animals in tall fescue are ergopeptine alkaloids, especially ergovaline. Ergovaline functions as a dopamine D2 agonist and alters prolactin and several other hormones in the body. Pregnant mares are most susceptible during their last month of gestation. Clinical signs include prolonged gestation, dystocia, retained placentas, agalactia, and dysmature foals that are either stillborn or weak. |
---|---|
ISSN: | 0749-0739 |
DOI: | 10.1016/S0749-0739(17)30052-4 |