Table 4 Effects of different nutritional protocols on carcass characteristics of Nellore yearling bulls differing in EPD for marbling.

Item	FGC	FGC	HMC	HMC	HMC	SEM¹	Contrasts (P-value)
Item	CSFA-	CSFA+	CSFA-	CSFA+	CSFA + Zn + Cr	SEM¹	Corn	CSFA	Corn*CSFA	ZnCr	EPD*Trt
Carcass characteristics
Initial HCW², kg	204.15	202.67	202.28	202.12	202.32	5.170	0.31	0.49	0.58	0.90	–
Final HCW, kg	309.89	320.41	318.99	322.21	320.87	2.771	0.07	0.02	0.21	0.72	–
DMI:15-kg carcass, kg	141.49	131.67	128.70	122.18	122.57	2.102	< 0.01	< 0.01	0.46	0.89	0.01
Dressing percentage	54.98	54.96	54.76	54.77	55.37	0.216	0.25	0.99	0.96	0.02	–
Carcass daily gain, kg	0.957	1.051	1.038	1.067	1.055	0.0247	0.07	0.02	0.21	0.72	–
Carcass transfer, %	67.55	66.51	65.62	65.14	67.49	0.755	0.01	0.27	0.69	0.01	< 0.01
Initial LM³ area, cm²	62.53^b	66.91^a	64.67^ab	64.78^ab	63.24	0.672	1.00	0.01	0.01	0.16	–
Final LM area, cm²	82.58	85.28	82.91	83.69	82.17	1.085	0.57	0.15	0.43	0.27	0.04
LM area daily gain, cm²	0.155	0.174	0.159	0.168	0.158	0.0097	0.92	0.19	0.62	0.45	–
Initial 12th rib fat, mm	2.70	2.64	2.91	2.86	2.88	0.078	0.02	0.49	0.99	0.86	0.05
Final 12th rib fat, mm	5.57	6.18	5.96	6.09	6.58	0.182	0.43	0.06	0.22	0.05	0.03
12th rib fat daily gain, mm	0.024	0.029	0.027	0.028	0.033	0.0016	0.43	0.06	0.22	0.05	0.03
Initial BF⁴ fat thickness, mm	4.34	4.11	4.39	4.48	4.63	0.113	0.12	0.59	0.23	0.21	–
Final BF fat thickness, mm	8.34	9.25	9.11	9.16	9.58	0.243	0.28	0.13	0.17	0.42	< 0.01
BF fat daily gain, mm	0.034	0.044	0.040	0.041	0.044	0.0026	0.50	0.05	0.10	0.38	–
Initial marbling, %	2.34	2.42	2.43	2.41	2.41	0.042	0.52	0.54	0.34	0.84	< 0.01
Final marbling, %	3.27	3.32	3.36	3.32	3.27	0.059	0.56	0.98	0.54	0.56	–

Finely ground corn (FGC); High moisture corn (HMC); Finely ground corn associated with calcium salts of fatty acids (FGC + CSFA); high moisture corn associated with calcium salts of fatty acids (HMC + CSFA); high moisture corn associated with calcium salts of fatty acids and organic Zinc and Chromium (HMC + CSFA + ZnCr). ¹ standard error of mean; ² hot carcass weight; ³ longissimus muscle; ⁴ biceps femoris.

Search