. 2014 Jan;27(1):69–76. doi: 10.5713/ajas.2012.12585

Table 8.

Effects of glycine and threonine levels of the diet on liver TDG activity and threonine efficiency in growing chicks

dThr¹	Thr efficiency (bc⁻¹)²				Mean liver weight				TDG-activity (nmol/30 min/mg protein)

									Aminoacetone				Glycine				Total activity

	0.64% Gly	0.98% Gly	Avg.	p-value	0.64% Gly	0.98% Gly	Avg.	p-value	0.64% Gly	0.98% Gly	Avg.	p-value	0.64% Gly	0.98% Gly	Avg.	p-value	0.64% Gly	0.98% Gly	Avg.	p-value
0.45%	120^a ±5	119^a ±4	119 ±4	<0.001	7.10^a ±0.94	6.30^a ±0.57	6.70 ±0.85	<0.001	3.55^a ±1.77	3.52^a ±1.21	3.54 ±1.44	0.011	3.24^a ±1.21	3.62^a ±1.83	3.43 ±1.49	0.024	6.79^a ±2.43	7.14^a ±2.93	6.97 ±2.57	0.003
0.60%	117^a ±3	108^b ±3	112 ±6	<0.001	11.20^b ±1.08	14.40^c ±0.93	12.65 ±1.93	<0.001	4.24^ab ±1.44	8.77^b ±4.71	6.30 ±3.94	0.011	5.40^a ±2.09	5.01^a ±1.64	5.22 ±1.82	0.024	9.64^ab ±3.44	13.78^b ±4.66	11.52 ±4.39	0.003
Avg.	119 ±4	113 ±7	116 ±6		9.15 ±2.35	9.98 ±4.29	9.55 ±3.36		3.90 ±1.58	5.91 ±4.14	4.86 ±3.18		4.32 ±1.98	4.25 ±1.81	4.29 ±1.86		8.22 ±3.21	10.16 ±5.00	9.15 ±4.18
p-value	0.003			0.017^*	0.005			<0.001^*	0.048			0.045^*	0.993			0.603^*	0.130			0.197^*

Values indicate mean±SD (n = 6).

True digestible threonine (AminoDat 1.1, Degussa, 1997).

Calculated from N-balance data, exponential N-utilization model.

^a,b,c

Different superscripts within a row indicate significant differences (p<0.05; t-test).

p-value of interaction effect.