5 Questions
Match the following symptoms with their association in animals:
Lameness = Fescue toxicosis Necrosis of tail, ears, and hoof tissue = Ergotism Erythema and swelling of the coronary region = Ergot toxicosis Agalactia and reduced lactation = Ergovaline toxicity
Match the following effects with their association in animals:
Early parturition for cattle and prolonged gestation in mares = Dopaminergic effect of ergovaline Temperature intolerance in high environmental temperatures = Inadequate prolactin due to ergovaline Weight loss and abnormal behavior = Fescue toxicosis Imbalances of progesterone and estrogen = Dopaminergic effect of ergovaline
Match the following statements with their association in fescue plants:
High nitrogen applications enhance toxicity = Tall fescue Variation in infection level with the fungus leads to toxin variation = Kentucky-31 fescues Endophyte fungus N coenophialum synthesizes ergot alkaloids = Infected fescue Susceptibility of cattle is subject to individual variation = Tall fescue
Match the following descriptions with their association in ergovaline toxicity:
Initiates several physiologic abnormalities in animals = Agonist for dopamine D2 receptors Causes agalactia in horses and swine = Inhibition of prolactin secretion Reduces lactation in cattle = Inhibition of prolactin secretion Leads to temperature intolerance at high environmental temperatures = Disturbance of hypothalamic thermoregulatory center
Match the following actions with their association in infected fescue plants:
Produces ~90% of the ergopeptide alkaloids produced = Ergot alkaloid ergovaline Ranges from 100 to 500 ppb in infected tall fescue = Ergot alkaloid ergovaline
200 ppb is considered a toxic concentration = Infected tall fescue 90% of ergovaline metabolites are found in urine of cattle = Endophyte-infected fescue
Test your knowledge about the symptoms and causes of ergotism in animals, particularly related to fescue lameness. Learn about the effects of ergot alkaloids produced by the Neotyphodium coenophialum fungus in tall fescue grass.
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