. 2021 Jan 22;7(2):472–480. doi: 10.1016/j.aninu.2020.09.003

Table 7.

Effect of dietary AFD Thr-to-Lys ratio and AFD (Gly + Ser)-to-Lys ratio on plasma metabolite concentrations at 28 d.¹

Item	AFD Thr-to-Lys ratio, %	AFD (Gly + Ser)-to-Lys ratio, %	PFAA, mg/mL	TG, g/L	Glucose, g/L	UA, mg/L
Treatments
	55	135	0.47^abc	1.00	2.30	46.7
	58	135	0.53^cde	1.19	2.13	53.1
	61	135	0.47^abcd	1.09	2.26	45.7
	64	135	0.43^a	0.96	2.42	53.5
	55	142	0.49^abcde	1.23	2.19	48.3
	58	142	0.46^abc	1.09	2.23	47.5
	61	142	0.46^abc	1.19	2.35	47.3
	64	142	0.51^bcde	0.90	2.39	51.1
	55	149	0.61^f	1.15	2.35	51.2
	58	149	0.54^ef	1.04	2.17	48.5
	61	149	0.54^de	1.09	2.28	54.7
	64	149	0.46^ab	0.94	2.32	49.3
	55	156	0.55^ef	1.10	2.18	47.8
	58	156	0.52^bcde	1.02	2.22	51.9
	61	156	0.52^bcde	1.16	2.30	56.4
	64	156	0.50^bcde	0.92	2.36	54.3
AFD Thr-to-Lys ratio
	55		0.53^b	1.12^b	2.26^ab	48.5
	58		0.51^b	1.08^b	2.19^a	50.3
	61		0.50^ab	1.13^b	2.30^ab	51.0
	64		0.48^a	0.93^a	2.37^b	52.0
AFD (Gly + Ser)-to-Lys ratio
		135	0.47^a	1.06	2.28	49.8
		142	0.48^a	1.10	2.29	48.6
		149	0.54^b	1.06	2.28	50.9
		156	0.52^b	1.05	2.26	52.6
P-value (LSD)
AFD Thr-to-Lys ratio			0.014 (0.033)	<0.001 (0.082)	0.020 (0.118)	0.434 (4.34)
Linear			0.001	<0.001	0.016	0.105
Quadratic			0.679	0.005	0.087	0.821
AFD (Gly + Ser)-to-Lys ratio			<0.001 (0.033)	0.590 (0.082)	0.977 (0.118)	0.297 (4.34)
Linear			<0.001	0.529	0.791	0.117
Quadratic			0.390	0.428	0.723	0.347
Interaction			0.014 (0.066)	0.132 (0.163)	0.844 (0.236)	0.351 (8.69)
Lin.Lin			0.384	0.930	0.873	0.683
Lin.Qua			0.555	0.116	0.636	0.308
Qua.Lin			0.248	0.265	0.354	0.271
Qua.Qua			0.115	0.198	0.704	0.594

AFD = apparent faecal digestible; PFAA = plasma free amino acids; TG = triglyceride; UA = uric acid; LSD = least significant differences.

^a-f Means within the same column with no common superscript differ significantly (P ≤ 0.05).

Data presented as means (n = 10 birds per treatment).