Table 3.

Effects of threonine deficiency and feed restriction on liver lipids of ducks at 21 day of age.

Items	Thr-D	Pair-F	Thr-S	Pooled SEM	P-value
Relative liver weight (%)*	3.64b	4.39a	3.29b	0.11	<0.0001
Total Lipid (% of fresh liver)	6.10	5.84	6.06	0.14	0.2502
Triglyceride (mg/g fresh liver)	6.66a	5.37b	5.48b	0.37	0.0432
Cholesterol (mg/g fresh liver)	1.66	1.35	1.70	0.11	0.0668

Thr-D, threonine deficiency; Thr-S, threonine sufficiency; Pair-F, pair-fed.

*Relative liver weight values were calculated as liver weight/liver body weight × 100%.

^a,bMean values with unlike superscript letters were significantly different (P < 0.05).