Table 4.

Feedlot performance of Bos indicus bulls offered isolipidic diets containing 15%, 10%, 5%, or 0%(DM basis) of WC and 2%, 3%, 4%, or 5% of CSFA as lipid sources^†

Item‡	Treatments				SEM	P-value
	15WC	10WC	5WC	0WC		0WC vs. WC	L	Q
BW, kg
Initial	302.7	302.2	300.7	303.0	10.92	0.93	0.99	0.90
Day 15	324.6	328.7	336.5	335.4	11.55	0.69	0.44	0.82
Day 55	387.0	389.5	390.2	393.9	13.72	0.77	0.75	0.94
Final	478.3	485.2	481.1	485.5	16.84	0.84	0.82	0.94
ADG, kg
Days 0 to 15	2.04	2.21	2.25	1.75	0.15	0.02	—	—
Days 16 to 55	1.47	1.45	1.43	1.49	0.08	0.67	0.89	0.66
Days 56 to 108	1.79	1.83	1.76	1.74	0.07	0.51	0.49	0.68
Overall	1.68	1.72	1.68	1.63	0.09	0.42	0.54	0.52
DMI, kg/d
Days 0 to 15	9.21	9.26	9.43	9.21	0.33	0.80	—	—
Days 16 to 55	10.79	11.65	10.97	11.30	0.41	0.73	0.65	0.54
Days 56 to 108	11.95	11.94	11.45	11.70	0.47	0.89	0.56	0.77
Overall	11.16	11.48	10.98	11.21	0.41	0.99	0.85	0.90
DMI, % BW
Days 0 to 15	2.92	2.97	3.01	2.91	0.06	0.42	—	—
Days 16 to 55	3.00	3.24	3.05	3.14	0.05	0.45	0.30	0.17
Days 56 to 108	2.74	2.73	2.62	2.69	0.05	0.98	0.31	0.41
Overall	2.86	2.95	2.84	2.90	0.05	0.86	0.93	0.72
FE, g/kg
Days 0 to 15	220	238	236	191	10	<0.01	—	—
Days 16 to 55	135	124	130	132	4	0.70	0.76	0.11
Days 56 to 108	148	152	154	148	3	0.35	0.82	0.08
Overall	150	149	153	145	2	0.03	0.26	0.12
DMI fluctuation||,%
Days 0 to 15	6.56	6.44	5.82	5.66	0.69	0.44	—	—
Days 16 to 55	3.95	3.24	5.65	3.32	0.45	0.06	0.81	0.07
Days 56 to 108	3.10	2.69	3.43	2.46	0.35	0.12	0.45	0.42
Overall	3.90	3.53	4.50	3.29	0.28	0.03	0.48	0.13

L, linear effect; Q, quadratic effect.

^†Diets were offered for 108 d.

^‡Body weight measurements on days 15 and 55 were obtained as full BW, whereas measurements obtained on days 0 and 108 were obtained from animals that were restricted from feed and water for 16 h.

^||Calculated according to methodologies described by Bevans et al. (2005).