Table 2.

Analyzed chemical composition of the diets, g/kg DM if not otherwise stated

Ca source	Ca formate		Ca carbonate
Exogenous phytase, FTU/kg of diet	0	1,500	0	1,500	1,500
Formic acid, g/kg of diet					8.0
Item	Diet 1	Diet 2	Diet 3	Diet 4	Diet 5
DM, g/kg	901	901	902	905	900
GE, MJ/kg DM	19.2	19.1	18.9	19.1	19.0
Crude protein (N × 6.25)	220	217	216	215	216
Ether extract	42	45	50	51	58
aNDFom1	151	148	139	137	133
ADFom2	74	78	75	73	71
ADL3	21	24	26	28	20
Crude fiber	40	37	40	40	40
Crude ash	72	73	75	78	68
Sodium	1.7	1.8	1.9	1.8	2.0
Calcium	5.9	5.8	6.3	6.4	6.4
Total phosphorus (P)	4.8	4.8	4.7	4.8	4.8
InsP6-P	2.7	2.7	2.7	2.7	2.8
InsP6, µmol/g DM4	14.6	14.6	14.7	14.7	14.9
Ins(1,2,4,5,6)P5, µmol/g DM	1.0	1.0	1.0	1.0	1.0
Ins(1,2,3,4,5)P5, µmol/g DM	0.5	0.5	0.5	0.5	0.5
Myo-inositol, µmol/g DM	1.7	1.7	1.7	1.1	1.1
Phytase activity, FTU/kg	<60	1,600	<60	1,680	1,520
Indispensable amino acids
Arg	14.0	14.1	14.1	14.0	14.3
His	6.2	6.1	6.1	6.1	6.2
Ile	9.2	9.2	9.2	9.1	9.4
Leu	19.5	19.6	19.6	19.6	19.9
Lys	11.6	11.5	11.5	11.5	11.7
Met	3.7	3.7	3.7	3.7	3.8
Phe	10.7	10.7	10.7	10.7	10.9
Thr	8.8	8.6	8.7	8.7	8.8
Val	10.4	10.4	10.4	10.2	10.6
Dispensable amino acids
Ala	11.4	11.3	11.4	11.4	11.6
Asx5	21.3	21.0	21.1	21.1	21.4
Cys	3.6	3.5	3.6	3.6	3.5
Glx5	39.6	39.3	39.5	39.5	40
Gly	9.5	9.5	9.4	9.4	9.6
Pro	12.8	13.2	13.4	13.3	13.5
Ser	11.1	10.9	11.0	11.1	11.1
Tyr	7.6	7.4	7.5	7.4	7.5

¹Neutral detergent fiber assayed with heat-stable amylase and expressed exclusive of residual ash.

²Acid detergent fiber expressed exclusive of residual ash.

³Acid detergent lignin.

⁴Inositol phosphate (InsP) isomers not included in this table were not detectable or below the limit of quantification.

⁵Asp, Asn and Glu, Gln, respectively, were not distinguished because the side groups of Asn and Gln are lost during acid hydrolysis (Fontaine, 2003).