Skip to main content

View full-text article in PMC

. 2022 Jun 30;101(9):102038. doi: 10.1016/j.psj.2022.102038

Table 12.

Carcass parts characteristics of Ross 708 male broilers fed reduced CP diets supplemented with Gly from 0 to 48 d post-hatch in experiment 2.¹^,²

		Treatments						SEM	P-values
		CTL	RCP	LCP88	LCP100	LCP112	LCP124		CTL vs. RCP	CTL vs. LCP88	RCP vs. LCP88	Glycine
Item		CTL	RCP	LCP88	LCP100	LCP112	LCP124		CTL vs. RCP	CTL vs. LCP88	RCP vs. LCP88	Linear	Quadratic
Hot carcass	Weight, kg	2.629	2.700	2.585	2.593	2.612	2.564	0.032	0.076	0.301	0.009	0.759	0.384
	Yield, %	76.86	76.77	76.29	76.30	75.96	76.43	0.188	0.692	0.027	0.061	0.933	0.235
Fat pad	Weight, kg	0.040	0.043	0.051	0.049	0.046	0.046	0.0015	0.105	<0.001	<0.001	0.003	0.538
	Yield, %	1.16	1.22	1.52	1.45	1.34	1.36	0.038	0.281	<0.001	<0.001	0.001	0.243
Chilled carcass	Weight, kg	2.678	2.758	2.639	2.637	2.667	2.617	0.0326	0.050	0.364	0.008	0.811	0.460
	Yield, %	78.29	78.41	77.88	77.61	77.60	78.01	0.233	0.680	0.195	0.096	0.723	0.150
Breast fillets³	Weight, kg	0.798	0.844	0.774	0.779	0.774	0.762	0.0145	0.012	0.217	<0.001	0.537	0.561
	Yield, %	23.30	23.97	22.77	22.87	22.46	22.69	0.237	0.025	0.101	<0.001	0.548	0.782
Tenders⁴	Weight, kg	0.150	0.152	0.140	0.137	0.136	0.138	0.0022	0.442	0.003	<0.001	0.372	0.363
	Yield, %	4.37	4.31	4.14	4.11	3.97	4.10	0.041	0.249	<0.001	0.003	0.157	0.054
Total breast meat	Weight, kg	0.947	0.996	0.914	0.916	0.910	0.900	0.0158	0.015	0.117	<0.001	0.489	0.685
	Yield, %	27.67	28.28	26.91	26.92	26.43	26.79	0.238	0.040	0.020	<0.001	0.429	0.462
Wings	Weight, kg	0.274	0.273	0.266	0.266	0.27	0.266	0.0033	0.871	0.098	0.131	0.813	0.578
	Yield, %	8.02	7.77	7.87	7.84	7.86	7.94	0.055	<0.001	0.049	0.206	0.339	0.340
Leg quarters	Weight, kg	0.773	0.786	0.775	0.766	0.788	0.776	0.0097	0.288	0.882	0.408	0.575	0.902
	Yield, %	22.62	22.36	22.92	22.57	22.93	23.14	0.144	0.148	0.128	0.006	0.116	0.063

Abbreviations: BWG, body weight gain; CTL, control; FI, feed intake; LCP, low crude protein; RCP, reduced crude protein.

¹

Values are least square means of 12 replicate pens for the control and RCP diets and 9 replicate pens for the LCP diets.

²

The LCP88, LCP100, LCP112, and LCP124 had an 88, 100, 112, and 124% increase in tGly + Ser, respectively, compared to the RCP diet.

³

Pectoralis major.

⁴

Pectoralis minor.