Table 5.

Clearance rates and AUC of glucose in steers during a tolerance test while receiving tall fescue seeds without (E−) or with (E+) ergot alkaloids without (L-DOPA−) and with intra-abomasal infusion of L-DOPA+

Item1	L-DOPA−		L-DOPA+		SEM2	P-value3
	E−	E+	E−	E+		DOPA	E	DOPA × E
k 5-15	2.77	2.07	2.21	2.16	0.437	0.49	0.484	0.346
k 15-30	0.433	0.733	1.490	1.990	0.278	<0.001	0.280	0.620
k 30-60	0.375	0.447	0.520	0.390	0.206	0.753	0.852	0.461
AUC	19,401	19,672	17,991	17,564	548	0.006	0.897	0.508

¹ k _5-15, k_15-30, and k_30-60 are glucose clearance rates (% per min) at 5 to 15, 15 to 30, and 30 to 60 min after glucose was infusion; AUC is area under curve of glucose from 0 to 180 min after glucose was infusion.

²SEM, n = 6.

³DOPA is the effect of L-DOPA infusion, E is the effect of ergot alkaloids, and DOPA*E is the interaction between L-DOPA and ergot alkaloids.