Table 4.

Mean results for the titrated-ergovaline dosage trial (Exp. 2) on reticuloruminal motility contraction variables measured for 57 d in E− and E+ tall fescue seed-treated steers

	Treatment			P-value			Contrasts on dose
Item	E− 1	E+ 2	SEM3	Seed	Dose	Seed × dose	Linear	Quadratic	Cubic
Amplitude, mm Hg	8.06	8.10	0.42	0.951	0.005	0.309	0.005	0.012	0.028
Frequency, contractions per min	1.67	1.23	0.07	0.137	0.018	0.483	0.111	0.005	0.313

¹E−, endophyte-free tall fescue seed.

²E+, endophyte-infected tall fescue seed; 5, 10, 15, and 20 µg ERV/kg BW/d.

³SEM, standard error of the mean, n = 4 steers/treatment.