Table 1.

Composition and nutritional profile of the supplements offered to the herd during the entire experiment^1,2

Item, g/d	SP03−	SP03+	SP1−	SP1+
Ground corn	621	531	2,406	2,316
Soybean meal	135	135	372	372
Urea	27	27	32	32
Mineral–vitamin mix	117	117	168	168
Calcium salts of fatty acids	—	90	—	90
Nutritional profile, g/d
Dry matter	809	814	2,691	2,709
Crude protein	262	234	702	626
Neutral detergent fiber	60	35	180	138
Acid detergent fiber	49	23	137	114
Ether extract	24	63	129	182
Total digestible nutrients3	636	648	2,126	2,151
Net energy for maintenance4	1.67	1.73	5.62	5.69
Net energy for gain4	1.14	1.18	3.82	3.87

¹Samples were collected at the beginning of the experiment.

²SP03− = supplementation of 0.3% of BW without CSFA fortification; SP03+ = supplementation of 0.3% of BW with CSFA fortification; SP1− = supplementation of 1.0% of BW without CSFA fortification; SP1+ = supplementation of 1.0% of BW with CSFA fortification.

³The total digestible nutrients concentrations were calculated according to equations described by Weiss et al. (1992).

⁴The net energy for maintenance and for gain concentrations were calculated with the equations reported by NASEM (2016).