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. 2022 Mar 11;100(6):skac075. doi: 10.1093/jas/skac075

Table 5.

The effects of lowering dietary crude protein and adding synthetic amino acids on carcass characteristics

Carcass characteristics
Diet					Fat depth, mm
Diet					MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	0.9025	0.8775	0.8941	22.64	0.0826	0.6539	<0.0001	0.5748
G	0.7241	0.7383	0.7658	18.86		Linear	Quadratic
	20.66	20.52	21.08			0.5055	0.5258

					Loin depth, mm
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	2.9583	2.9508	2.8750	74.37	0.0979	0.0124	0.2426	0.6930
G	2.9583	2.9975	2.9100	75.06		Linear	Quadratic
	75.13^a	75.54^a	73.46^b			0.0203	0.0507

					Percent lean
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	55.100	55.233	54.825	55.052	0.7118	.0628	<0.0001	0.9315
G	56.141	56.316	55.758	56.072		Linear	Quadratic
	55.620^ab	55.775^a	55.219^b			0.1140	0.0779

					Base meat price
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	70.181	70.082	71.431	70.565	1.5118	0.0461	0.0061	0.4573
G	71.753	71.067	71.905	71.575		Linear	Quadratic
	70.967^ab	70.575^b	71.668^a			0.1129	0.05035

					Yield, %
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	74.845	76.102	75.322	75.423	1.6443	0.0072	0.4871	0.8359
G	74.820	76.644	75.619	75.694		Linear	Quadratic
	74.83^b	76.37^a	75.47^ab			0.1836	0.0041

					Premium grade, %
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	6.6975	6.8841	6.1325	6.5714	0.8800	0.0236	0.1536	0.5918
G	6.6983	7.2958	6.6183	6.8708		Linear	Quadratic
	6.697^ab	7.090^a	6.375^b			0.2088	0.0144

					Sort loss
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	1.5750	2.1450	1.1041	1.6081	0.9765	.0254	0.0019	0.6621
G	0.8508	1.1350	0.6066	0.8642		Linear	Quadratic
	1.212^ab	1.640^a	0.855^b			0.2092	0.0156

					Carcass value per 100 wt
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	75.304	74.821	76.460	75.528	3.28486	0.1882	0.0002	0.7178
G	77.608	77.228	77.917	77.582		Linear	Quadratic
	76.452	76.025	77.188			0.2512	0.1533

					Actual weight
	Diet				MSE	P-value
Sex	CTRL	1X	2X			Diet	Sex	Diet*Sex
B	217.00	215.67	209.08	213.91	9.2723	0.0330	0.0737	0.1782
G	207.25	215.167	207.416	209.94		Linear	Quadratic
	212.12^ab	215.417^a	208.25^b			0.1524	0.0274
		Diet
Sex		CTRL		1X		2X
B		12		12		12	36
G		12		12		12	36
		24		24		24

Values with different superscripts, within a row are different (P < 0.05).