Table 1.

Ingredient composition and nutrient levels of broiler experimental diets and Spirulina powder (%, as fed basis).

		Dietary treatments1
		Starter		Grower		Finisher
Item	Spirulina	C	SP	C	SP	C	SP
Ingredients, %
Corn	-	52.88	59.14	59.81	66.20	60.20	69.71
Soybean meal 45% CP	-	38.83	22.20	32.40	15.40	31.90	12.37
Spirulina powder 48% CP	-	0.00	15.00	0.00	15.00	0.00	15.00
Sunflower oil	-	4.12	0.00	4.00	0.00	4.53	0.00
Dicalcium phosphate	-	1.95	1.30	1.70	1.15	1.50	0.86
Calcium carbonate	-	1.30	1.60	1.20	1.50	1.00	1.30
Vitamin-mineral premix2	-	0.40	0.40	0.40	0.40	0.40	0.40
Sodium chloride	-	0.35	0.35	0.35	0.35	0.35	0.35
Methionine synthetic	-	0.12	0.01	0.10	0.00	0.12	0.00
Synthetic lysine	-	0.05	0.00	0.04	0.00	0.00	0.01
Nutrient content
Gross energy, kcal/kg	4,340	4,024	3,822	3,835	3,796	4,073	3,868
Dry matter, %	94.5	89.6	88.3	87.4	88.7	90.5	88.1
Crude protein, %	47.9	22.6	22.4	20.2	20.2	20.1	19.7
Ash, %	15.8	7.0	7.2	5.9	6.8	6.6	6.5
Sodium, mg/kg	26,694	2,823	7,271	2,887	7,603	2,788	7,699
Potassium, mg/kg	25,751	12,801	11,743	10,605	10,922	11,831	9,622
Phosphorus, mg/kg	9,88	8,787	6,891	6,967	6,850	8,043	5,785
Iron, mg/kg	953	190	305	160	307	189	286

¹Dietary treatments C: control diet; SP: 15% Spirulina diet. Starter (1–28d), grower (28–70d), and finisher (70–84d).

²Premix provided the following per kilogram of diet: vitamin A 8000 IU, vitamin D3 2200 IU, vitamin E 30 IU, vitamin B1 1 mg, vitamin B2 3 mg, vitamin B6 2 mg, vitamin B12 0.01 mg, vitamin H2 0.05 mg, vitamin K3 4 mg, Calcium-D-pantothenate 8 mg, Niacinamide 20 mg, folic acid 0.5 mg, Choline chloride 350 mg, Cu 7 mg, Fe 30 mg, I 0.5 mg, Mn 60 mg, Se 0.15 mg, Zn 50 mg.