Table 6.

Effects of forage type and dietary inclusion of an ionophore and(or) soybean and coconut oils on energy measures of yearling Alpine doelings

	Treatment1
Item2	Control	L	L-I	L-S	L-N	L-I-S	L-I-N	L-S-N	L-I-S-N	SEM	Contrast3
Gross energy
Intake, MJ/d	23.12	23.50	24.73	22.31	25.23	22.40	20.84	21.69	20.75	1.490
Digested, MJ/d4	12.36	11.24	11.84	11.23	12.25	11.48	10.54	11.08	10.25	0.820
Urinary, MJ/d5	0.70	0.71	0.74	0.70	0.76	0.67	0.63	0.65	0.62	0.045
Methane
MJ/d	1.36	0.76	0.84	0.71	0.71	0.66	0.65	0.68	0.68	0.048	1, 3, 5
% gross energy	5.92	3.27	3.49	3.19	2.84	2.91	3.20	3.20	3.27	0.165	1, 3
% DE	11.19	6.98	7.40	6.38	5.90	5.69	6.37	6.38	6.70	0.400	1, 3
ME
MJ/d	10.30	9.77	10.26	9.85	10.79	10.15	9.26	9.75	8.93	0.770
kJ/kg BW0.75	677	668	670	674	723	701	651	678	627	42.1
Heat energy
MJ/d	10.55	9.04	9.22	8.64	9.16	8.68	8.75	8.42	8.91	0.353	1
kJ/kg BW0.75	696	619a	632	598	618	600a	618	589	625	14.7	1
RE, MJ/d	-0.25	0.73	1.04	1.21	1.63	1.47	0.51	1.33	0.06	0.549	1

¹Control (alfalfa hay as basal forage); L = lespedeza as basal forage; L-I = L and the ionophore monensin; L-S = L and soybean oil; L-N = L and coconut oil; L-I-S = L, ionophore, and soybean oil; L-I-N = L, ionophore, and coconut oil; L-S-N = L, soybean oil, and coconut oil; L-I-S-N = L, ionophore, soybean oil, and coconut oil.

²DE = digestible energy RE = recovered energy.

³1 = control treatment vs. others; 3 = L-I vs. L-S and L-N; 5 = L-I, L-S, and L-N vs. L-I-S, L-I-N, and L-S-N (P < 0.05).

⁴Digestible energy was estimated based on GE intake on 4 d (3 d before and the day of gas exchange measures) and GE digestibility determined during the 6 d of fecal collection.

⁵Urinary energy was estimated as 3% of GE intake based on findings of Puchala et al. (2012a,b).