Table 2. Analyzed chemical composition of the experimental diets¹⁾

	PC_1-3	PC_4-5	NC_1-3	NC_4-5	ENC_1-3	ENC_4-5
Analyzed composition
Gross energy (kcal/kg)	3,460	3,600	3,460	3,600	3,460	3,600
Crude protein (%)	21.52	19.52	21.03	19.02	20.55	18.52
Total amino acid (%)
Lysine	1.34	1.20	1.32	1.17	1.29	1.15
Methionine	0.53	0.48	0.51	0.47	0.50	0.45
Cystine	0.48	0.44	0.47	0.43	0.46	0.43
Threonine	0.95	0.85	0.92	0.84	0.89	0.81
Tryptophan	0.24	0.22	0.24	0.21	0.23	0.20
Iso-Leucine	0.87	0.78	0.84	0.76	0.82	0.73
Leucine	1.02	0.93	1.00	0.90	0.97	0.88
Valine	0.98	0.89	0.95	0.86	0.93	0.84
Histidine	0.61	0.56	0.59	0.54	0.58	0.52
Arginine	1.41	1.26	1.37	1.22	1.32	1.18
Methionine + cystine	1.00	0.93	0.98	0.90	0.96	0.88

The eight dietary treatments were: positive control (PC), negative control (NC: minus 0.5% from PC, and minus 2% of lysine, methionine, threonine and methionine plus cysteine), extreme negative control (ENC: minus 1% from PC, minus 4% of lysine, methionine, threonine and methionine plus cysteine), and plus multi-protease 150 or 300 g per ton (e. g., PC-150); PC, PC-150, NC, NC-150, NC-300, ENC, ENC-150, ENC-300.