Evaluation of Protein Concentration and Limiting Amino Acids Including Lysine and Met + Cys in Prestarter Diet on Performance of Broilers

Table 2

The composition and calculated chemical analysis of diets in Experiment 1-2.

Ingredients (g/Kg)	Treatments
	T1	T2	T3	T4	T5	T6	T7	T8
Corn	522	521	521	520	566	565	565	565
Soybean meal (44%)	374	375	375	376	337	338	338	338
Soy oil	35	35	35	35	28	28	28	28
Monocalcium phosphate	16	16	16	16	16	16	16	16
Limestone	14.4	14.4	14.4	14.4	14.4	14.4	14.4	14.4
Premix vit + min.^1, 2	30	30	30	30	30	30	30	30
Salt	4.6	4.6	4.6	4.6	4.6	4.6	4.6	4.6
Calculated chemical analysis
Metabolizable energy (Kcal/Kg)	3000	3000	3000	3000	3000	3000	3000	3000
Crude protein (%)	23.2	23.2	23.2	23.2	21	21	21	21
Calcium (%)	1	1	1	1	1	1	1	1
Available phosphorus (%)	0.45	0.45	0.45	0.45	0.45	0.45	0.45	0.45
Na (%)	0.18	0.18	0.18	0.18	0.18	0.18	0.18	0.18
Arginine	1.39	1.39	1.39	1.39	1.39	1.39	1.39	1.39
Lysine (%)	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5
Methionine + cystine (%)	0.85	0.9	0.95	1	0.85	0.9	0.95	1

¹Each kg of premix provided vitamin A, 10000 IU; vitamin D3, 2500 IU; vitamin K, 2.4 mg; vitamin E, 44 IU; biotin, 0.1 mg; folic acid, 2.0 mg; niacin, 25 mg; calcium pantothenate, 14.32 mg; pyridoxine, 3.10 mg; riboflavin, 5 mg; thiamin, 1.2 mg; vitamin B12, 10.5 𝜇g; Fe, 85 mg; Mn, 125 mg; Cu, 7.8 mg; Se, 0.09 mg; Zn, 60 mg; choline chloride, 5.5 mg.
²Lysine and methionine were added inside of premix.