Table 2.

Ingredients and nutrient composition of diets.

		Starter		Grower		Finisher
Ingredients		NP	LP-EAA	NP	LP-EAA	NP	LP-EAA
Maize	%	57.60	61.00	60.71	65.31	63.66	70.25
Extr. soybean meal	%	27.00	28.00	22.20	24.54	24.50	20.29
PL-68${}^{\mathrm{1}}$	%	6.50	0	8.00	1.00	3.00	0.70
Sunflower oil	%	3.50	3.50	4.80	4.50	5.00	4.30
Wheat bran	%	0	1.72	0	0	0	0
Limestone	%	1.70	1.60	1.30	1.20	1.09	1.09
Monocalcium phosphate	%	1.80	2.00	1.35	1.60	1.40	1.60
Salt	%	0.40	0.40	0.40	0.40	0.40	0.40
L-lysine	%	0.44	0.58	0.34	0.41	0.19	0.39
DL-methionine	%	0.43	0.44	0.36	0.37	0.26	0.33
L-threonine	%	0.09	0.22	0	0.15	0	0.13
L-tryptophan	%	0.04	0.04	0.04	0.02	0	0.02
Vitamin and mineral premix${}^{\mathrm{2}}$	%	0.50	0.50	0.50	0.50	0.50	0.50
Calculated values (as-fed basis)
AME${}_{\mathrm{n}}$	MJ kg${}^{-\mathrm{1}}$	12.64	12.61	13.08	13.04	13.12	13.12
Lysine	%	1.44	1.48	1.27	1.24	1.11	1.12
Methionine $+$ cysteine	%	1.07	1.05	0.96	0.95	0.86	0.87
Threonine	%	0.97	0.94	0.84	0.84	0.74	0.74
Tryptophan	%	0.23	0.25	0.21	0.20	0.19	0.18
Arginine	%	1.28	1.24	1.19	1.11	1.11	0.99
Isoleucine	%	0.87	0.78	0.82	0.72	0.75	0.64
Leucine	%	1.59	1.53	1.52	1.48	1.50	1.39
Valine	%	1.01	0.88	0.97	0.81	0.87	0.74
Total Ca	%	1.15	1.15	0.92	0.93	0.85	0.87
Total P	%	0.79	0.80	0.68	0.69	0.66	0.68
Available P	%	0.54	0.53	0.45	0.45	0.42	0.44
Analyzed values (as-fed basis)
Dry matter	%	90.30	90.79	90.40	90.69	91.02	90.80
Crude protein	%	22.69	19.07	21.36	18.01	19.08	16.03
Ether extract	%	6.78	6.53	7.42	7.36	7.62	7.57
Crude fiber	%	2.43	2.70	2.20	2.41	2.56	2.45
Ash	%	6.45	6.56	5.45	5.52	5.28	5.30
Starch	%	38.24	41.75	41.00	43.70	42.80	45.93
Sugar	%	3.17	3.47	2.86	3.13	3.12	2.85

Abbreviations used: NP – normal protein diet with normal dietary crude protein levels; LP-EAA – low-protein diet supplemented with essential amino acid (L-lysine, DL-methionine, L-threonine and L-tryptophan); AME${}_{\mathrm{n}}$ – nitrogen-corrected apparent metabolizable energy; AME${}_{\mathrm{n}}$ (per kg) $=\mathrm{0.155}\times \mathit{\%}$ crude protein $+$ $\mathrm{0.343}\times \mathit{\%}$ ether extract $+$ $\mathrm{0.1669}\times \mathit{\%}$ starch $+$ $\mathrm{0.130}\times \mathit{\%}$ sugar (Commission Regulation (EC) no. 152/2009). ${}^{\mathrm{1}}$ Protein concentrate, by-product of glutamic acid production from bacterial biomass (KJK-Agroteam Ltd., Hungary). Amino acid contents: L-lysine 2.4 %, DL-methionine 0.9 %, L-cysteine 0.2 %, L-threonine 3.0 %, L-proline: 1.6 %, L-arginine 3.1 %, L-serine 2.4 %, L-glutamine 12.3 %, L-tryptophan 0.69 %, glycine 2.4 %, L-alanine 6.0 %, L-valine 3.2 %, L-isoleucine 2.4%, L-leucine 3.1 %, L-phenylalanine 2.2 %, L-histidine 0.9 %, L-aspartic acid 5.5 %. ${}^{\mathrm{2}}$ Per kilogram of diet: vitamin A 12 013 IU; vitamin D${}_{\mathrm{3}}$ 3875 IU; vitamin K 3.3 mg; vitamin E 46.5 IU; vitamin B1 2.33 mg; vitamin B2 7.44 mg; vitamin B6 3.88 mg, vitamin B12 0.016 mg; calcium pantothenate 13.95 mg; folic acid 1.56 mg; niacin 46.5 mg; choline chloride 504 mg; Fe 60 mg; Mn 100 mg; Cu 12.5 mg; Zn 83 mg; Se 0.42 mg; Co 0.28 mg; I 1.25 mg.