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Frequency of contractions for endophyte-free (E−) and endophyte-infected (E+) tall fescue seed treated steers each day of the experiment. Steers in the E+ treatment group received 10 μg ergovaline + ergovalinine/kg BW daily. The effect of day was significant (P = 0.03), and there was a tendency (P = 0.10) for a seed × day interaction.
