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

Table 7.

Effects of threonine and protein levels of the diets on liver TDG activity and threonine efficiency in chicks

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

									Aminoacetone				Glycine				Total activity

	17.5% CP	21.5% CP	Avg.	p-value	17.5% CP	21.5% CP	Avg.	p-value	17.5% CP	21.5% CP	Avg.	p-value	17.5% CP	21.5% CP	Avg.	p-value	17.5% CP	21.5% CP	Avg.	p-value
3.8 g/100 g CP	111^a ±3	120^c ±10	115.50 ±8.04	0.001	24.20^c ±3.47	18.30^b ±1.84	21.25 ±4.06	<0.001	2.33^a ±1.33	2.84^a ±1.29	2.58 ±1.27	0.013	1.45^a ±0.36	2.86^b ±0.98	2.16 ±1.02	0.076	3.78^a ±1.33	5.71^a ±2.01	4.74 ±1.91	0.013
4.7 g/100 g CP	100^b ±3	110^a ±8	104.92 ±7.56	0.001	15.70^a ±1.30	13.10^a ±1.38	14.28 ±1.86	<0.001	2.42^a ±1.19	5.71^b ±1.40	3.92 ±2.11	0.013	1.45^a ±0.80	4.62^b ±1.94	2.89 ±2.14	0.076	3.87^a ±1.65	10.33^b ±3.05	6.81 ±4.06	0.013
Avg.	105.83 ±6.31	114.58 ±10.07	110.21 ±9.35		20.33 ±5.14	15.70 ±3.13	17.92 ±4.74		2.37 ±1.20	4.15 ±1.96	3.22 ±1.82		1.45 ±0.59	3.66 ±1.68	2.51 ±1.65		3.83 ±1.43	7.81 ±3.40	5.73 ±3.23
p-value	0.004			0.879^*	<0.001			0.091^*	0.002			0.019^*	<0.001			0.075^*	<0.001			0.016^*

Values indicate mean±SD (n = 6).

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.