Table 1.

Composition (g/kg) of experimental diets for broilers

Ingredients, g/kg	Starter	Grower		Finisher
dl-MET supplementation	100%	100%	130%	100%	130%
Corn1	558	626	626	664	664
Soybean meal	351	291	291	255	255
Soybean oil	37.0	35.5	35.5	40.0	40.0
Dicalcium phosphate	17.8	15.7	15.7	12.7	12.7
Limestone	15.7	13.2	13.2	11.1	11.1
Vit. /min. premix2	5.00	5.00	5.00	5.00	5.00
l-Lysine	4.50	3.60	3.60	3.20	3.20
dl-Methionine, >99%3	3.60	2.90	3.77	2.60	3.38
Salt	3.10	3.10	3.10	3.50	3.50
l-Valine	1.30	0.90	0.90	0.60	0.60
l-Threonine	1.30	1.00	1.00	0.80	0.80
Choline chloride 60%	1.10	1.10	1.10	1.30	1.30
Sodium bicarbonate	0.80	0.90	0.90	0.00	0.00
l-Isoleucine	0.60	0.40	0.40	0.40	0.40
Analytical values
AME, kcal/kg	2,927	2,977	2,987	3,033	3,082
Crude protein, %	22.0	19.9	19.5	17.8	17.4
Methionine %	0.65	0.54	0.73	0.49	0.56
Cysteine, %	0.35	0.32	0.31	0.29	0.27
Methionine + cysteine, %	1.00	0.86	1.04	0.78	0.83
Lysine, %	1.47	1.23	1.24	1.09	1.01
Phosphorus, %	0.68	0.64	0.61	0.60	0.59
Calcium4, %	1.06	0.91	0.91	0.76	0.76

¹Analytical nutrient values of corn: AME, 3,320 kcal/kg; crude protein, 77.5 g/kg; lysine, 2.51 g/kg; methionine, 1.64 g/kg. Analytical nutrient values of soybean mean: AME, 2,370 kcal/kg; crude protein, 474 g/kg; lysine, 29.3 g/kg; methionine, 66.3 g/kg.

²Vitamin and mineral mixture provided the following nutrients per kilogram of diets: vitamin A, 4,550 IU; vitamin E, 7.5 IU; vitamin D 3,450 IU; vitamin K, 0.752 mg; riboflavin, 3.75 mg; pantothenic acid, 3 mg; niacin, 15.2 mg; vitamin B₁₂, 0.006 mg; biotin, 0.152 mg; folic acid, 0.376 mg; thiamine, 1.07 mg; pyridoxine, 3.78 mg; choline, 1,575 mg; Cu, 12 mg; I, 0.053 mg; Mn, 30.2 mg; Se, 0.09 mg; Zn, 53.0 mg; Fe,67.8 mg.

³ dl-Methionine (MetAMINO Evonik Industries, Essen, Germany, >99% purity).

⁴The calcium levels listed in the table are the calculated concentrations.