. 2022 Dec 21;102(3):102441. doi: 10.1016/j.psj.2022.102441

Table 1.

Composition and nutrient levels of experimental diets (air-dry basis) %.

Item	Days 0 to 21		Days 21 to 42
	CON¹	LPD¹	CON	LPD
Ingredients
Corn	51.26	60.29	58.05	67.50
Soybean meal	38.20	29.53	32.95	24.22
Soybean oil	6.72	5.84	5.64	4.44
Limestone	1.26	1.28	1.43	1.41
CaHPO₄	1.68	1.77	1.13	1.22
NaCl	0.35	0.35	0.35	0.35
Vitamin premix²	0.10	0.10	0.10	0.10
Mineral premix³	0.15	0.15	0.15	0.15
Choline chloride	0.07	0.07	0.07	0.07
L-lysine hydrochloride	0.04	0.23	0.05	0.24
DL-methionine	0.17	0.21	0.08	0.12
L-threonine	0.00	0.13	0.00	0.13
L-tryptophan	0.00	0.05	0.00	0.05
Nutrient levels
Metabolizable energy (MJ/kg)	13.14	13.12	13.09	13.07
Calcium (%)	0.98	0.98	0.91	0.90
Available phosphorus (%)	0.45	0.45	0.35	0.35
Crude protein (%)⁴	21.06	18.07	19.06	16.01
Lysine (%)⁴	1.12	1.11	1.00	1.02
Digestible lysine (%)	0.96	0.98	0.87	0.89
Methionine (%)⁴	0.52	0.51	0.38	0.40
Threonine (%)⁴	0.87	0.86	0.80	0.79
Tryptophan (%)⁴	0.31	0.32	0.26	0.27
Isoleucine (%)⁴	0.83	0.70	0.75	0.62
Digestible Isoleucine (%)	0.71	0.59	0.64	0.53

CON, control diet; LPD, low-protein diet.

Provided per kilogram of diet: vitamin A (trans-retinyl acetate), 8000 IU; vitamin D₃ (cholecalciferol), 3000 IU; vitamin E (all-rac-α-tocopherol acetate), 20 IU; vitamin K₃ (menadione), 2.0 mg; vitamin B₁ (thiamin), 4.2 mg; vitamin B₂ (riboflavin), 4.0 mg; vitamin B₆ (pyridoxine HCl), 4.5 mg; vitamin B₁₂ (cobalamin), 0.02 mg; nicotinic acid, 10 mg; calcium pantothenate, 11 mg; folic acid, 1.0 mg; biotin, 0.15 mg.

Provided per kilogram of diet: Fe (as ferrous sulfate), 80 mg; Cu (as copper sulfate), 10 mg; Zn (as zinc sulfate), 75 mg; Mn (as manganese sulfate), 80 mg; Se (as sodium selenite), 0.30 mg; I (as potassium iodide), 0.40 mg.

⁴

Analyzed value.