Table 2.

Calculated and analyzed composition of the experimental diet

	Diet
	LP	MP	HP
Planned
Dry matter (DM), %	86	86	86
Total P, g/kg DM	4.2	6.5	8.6
Total Ca, g/kg DM	8.7	8.7	8.7
Total Ca:total P	2.1	1.3	1.0
Analyzed
Dry matter (DM), %	91	91	91
Total P, g/kg DM	4.1	6.2	8.9
Total Ca, g/kg DM	7.4	8.1	9.0
Total Ca:total P	1.8	1.3	1.0
Phytate P, g/kg DM	2.7	2.7	2.7
Phytase, FTU/kg	ND	ND	ND
Digestible P, g/kg DM1	1.5	3.1	4.9
Total Ca:digestible P	4.9	2.6	1.8

Basic diet (%): barley, 55; wheat, 22.1; soybean meal, 18.1; animal fat, 2.0; molasses, 1.0; calcium carbonate, 0.9; sodium chloride, 0.5; vitamin/mineral premix, 0.2 (providing per kg diet: 84 mg iron; 100 mg zinc; 42 mg manganese; 15 mg copper; 0.21 mg iodine; 0.03 mg selenium; 76.4 mg DL-α-tocopherol; 2.1 mg vitamin K₃; 2.1 mg vitamin B₁; 2.1 mg vitamin B₂; 3.15 mg vitamin B₆; 10.5 mg D-pantotenic acid; 21 mg niacin; 0.05 mg biotin; 0.02 mg vitamin B₁₂; 4,200 IU vitamin A; 420 IU vitamin D₃); L-lysine HCl 80%, 0.13; L-threonine, 0.04; DL-methionine, 0.03. LP = low phosphorus diet; MP = medium phosphorus diet; HP = high phosphorus diet; ND = not detectable (below 50 FTU/kg DM).

¹Experimentally determined apparent total tract digestibility of P (Sørensen et al., 2018).