Cattle grazing older, established tall fescue pastures results in poor weight gains, poor body condition, fever, lameness, and in some cases a loss of hooves and tail tips. The likely cause is:

Question

ObjectiveMcq · Accepted Answer

fescue toxicosis from an alkaloid produced by an endophyte fungus living within plants

ObjectiveMcq · Answer

prussic acid that accumulates in the new regrowth

ObjectiveMcq · Answer

nitrate that accumulates in the stems, especially when high rates of N fertilizer are used

ObjectiveMcq · Answer

fescue toxicosis from a hallucinogenic compound from ergot sclerotia that replace the seed