Table 2.

The effect of inclusion of safflower oil and vitamin C in the broiler chicken diet on the apparent ileal digestibility coefficient (AID%) of amino acids

Item	Vitamin C level (mg/kg diet)		Safflower oil level (gm/kg)			Vitamin C × Safflower oil						SEM	P-value
	0	400	0	5	10	0Vit.C+ 0 Saff. Oil	0Vit.C + 5 Saff. Oil	0Vit.C+ 10 Saff. Oil	400Vit.C+ 0 Saff. Oil	400Vit.C+ 5 Saff. Oil	400Vit.C+ 10 Saff. Oil		Vit. C	Saff. oil	Vit.C x Saff. oil
Lysine	88.54b	88.91a	88.78	88.78	88.61	88.40d	88.66c	88.57cd	89.16a	88.91b	88.66c	0.16	<  0.01	0.46	<  0.01
Methionine	84.51	84.10	83.96b	84.06ab	84.90a	83.54c	84.79b	85.21a	84.38b	83.33c	84.58b	0.06	0.22	0.03	<  0.01
Threonine	84.69b	85.27a	85.12	84.94	84.88	85.19ab	84.57c	84.32c	85.06b	85.31ab	85.43a	0.10	<  0.01	0.60	<  0.01
Tryptophan	86.54b	87.99a	87.27	87.03	87.51	87.03bcd	86.06d	86.54cd	87.51abc	87.99ab	88.47a	0.22	<  0.01	0.70	<  0.01
Arginine	89.05b	89.31a	89.29	89.08	89.16	89.08bc	88.99c	89.08bc	89.51a	89.16bc	89.25b	0.04	<  0.01	0.13	<  0.01
Valine	84.61b	85.13a	84.83	84.78	85.00	84.83b	84.39c	84.61bc	84.83b	85.16a	85.38a	0.06	<  0.01	0.55	<  0.01
Leucine	90.07	90.16	90.21a	90.13ab	90.01b	90.05b	90.11b	90.00b	90.37a	90.11b	90.02b	0.03	0.15	<  0.01	<  0.01
Isoleucine	85.07	85.23	84.91b	85.09b	85.45a	84.91b	84.91b	85.39a	84.91b	85.27a	85.51a	0.08	0.22	<  0.01	<  0.01

^{a, b, c} Means within the same row carrying different superscripts are significantly different at (P <  0.05)