Table 1.

Ingredients and chemical composition of the experimental basal diets fed during the experiment stages.

Ingredients (g/kg)	Standard diets			Low density diet
	Starter, 0–7 days of age	Grower, 8–21 days of age	Finisher, 22–38 days of age	Starter, 0–7 days of age	Grower, 8–21 days of age	Finisher, 22–38 days of age
Maize	512	517.8	549.2	460.8	466.02	494.28
Wheat bran	0	0	0	100	100	100
Rye	0	50	70	0	45	63
Soybean meal (44% CP)	328	244	284	295.2	219.6	255.6
Dicalcium phosphate	18.00	16.00	10.00	16.20	14.40	9.00
Limestone	10.00	10.00	8.00	9.00	9.00	7.20
NaCl	3.00	4.50	4.50	2.70	4.05	4.05
Full fat soybean meal	100	130	16.0	90	117	14.4
Vit+min premixa	3.00	3.00	3.00	2.70	2.70	2.70
L-Lysine	1.00	1.90	2.00	0.90	1.71	1.80
DL-Methionine	2.00	2.50	3.00	1.80	2.25	2.70
Washed building sand	0.30	0.30	0.30	0.27	0.27	0.27
Vegetable oil	22.70	20.00	50.00	20.43	18.00	45.00
Total	1000	1000	1000	1000	1000	1000
DETERMINED AND CALCULATED AND COMPOSITION (g/kg)
CPb	227	209	190	220	204	187
ME (MJ/kg)c	12.63	12.78	13.37	11.92	12.05	12.58
Calciumc	8.58	8.45	6.26	7.86	7.74	5.77
Available phosphorusc	4.07	3.78	2.64	3.87	3.60	2.57
Methioninec	5.48	5.71	5.94	5.16	5.37	5.57
Methionine + cystinec	9.10	9.05	9.02	8.74	8.69	8.67
Lysinec	13.18	12.53	11.28	12.50	11.90	10.78
Crude fiber, %b	36.1	35.5	33	50.01	46.53	43.5
Ashb	51.1	53.5	55	55.2	56	56.2

^aVit+Min mix. provides per kilogram of the diet: Vit. A, 12,000 IU, vit. E (dl-α-tocopheryl acetate) 20 mg, menadione 2.3 mg, Vit. D3, 2,200 ICU, riboflavin 5.5 mg, calcium pantothenate 12 mg, nicotinic acid 50 mg, choline 250 mg, vit. B₁₂ 10 g, vit. B₆ 3 mg, thiamine 3 mg, folic acid 1 mg, d-biotin 0.05 mg. Trace mineral (mg/kg of diet): Mn 80, Zn 60, Fe 35, Cu 8, selenium 0.1 mg.

^bCalculated values based on NRC (1994) tables of analyses of feedstuffs.

^cDetermined values.