Table 1.

Composition of experimental diets (as-fed basis)

Item	Dietary treatment1
	Gestation		Lactation
	CON	ACI	CON	ACI
Ingredient, %
Corn, yellow dent	81.30	78.30	70.10	66.40
Soybean meal, dehulled	13.85	13.85	23.50	23.50
Cad-mate2	0.00	2.00	0.00	2.20
L-Lys HCl	0.00	0.00	0.16	0.16
L-Thr	0.00	0.00	0.01	0.01
Poultry fat	1.00	2.00	2.08	3.58
Salt	0.50	0.50	0.50	0.50
Vitamin premix3	0.04	0.04	0.04	0.04
Mineral premix4	0.15	0.15	0.15	0.15
Dicalcium phosphate	2.05	2.05	2.38	2.38
Limestone, ground	1.11	1.11	1.08	1.08
Total	100.00	100.00	100.00	100.00
Calculated composition5
DM, %	89.67	90.02	89.94	90.34
ME, Mcal/kg	3.36	3.34	3.40	3.40
CP, %	13.33	13.08	17.14	16.83
SID Lys, %	0.54	0.54	0.91	0.90
Ca, %	0.94	0.94	1.03	1.03
Total P, %	0.70	0.69	0.80	0.79
Available P, %	0.43	0.43	0.51	0.50
Mg, %	0.14	0.26	0.16	0.29
Na, %	0.27	0.27	0.33	0.33
K, %	0.57	0.56	0.73	0.73
S, %	0.13	0.28	0.16	0.36
Cl, %	0.33	0.66	0.37	0.73
DCAD-Eq1, mEq/kg6	170	74	226	124
DCAD-Eq2, mEq/kg7	170	−32	226	6
Analyzed composition
DM, %	88.64	88.77	89.33	89.48
CP, %	12.50	13.38	16.52	16.71
Ca, %	0.97	0.87	1.12	1.10
Total P, %	0.73	0.66	0.93	0.81
Mg, %	0.12	0.22	0.15	0.25
Na, %	0.24	0.21	0.18	0.19
K, %	0.52	0.52	0.74	0.70
S, %	0.16	0.31	0.21	0.37
Cl, %	0.39	0.65	0.38	0.72
DCAD-Eq1, mEq/kg6, 8	127	41	160	58
DCAD-Eq2, mEq/kg7, 8	127	−53	160	−41

¹Dietary cation-anion difference (DCAD) was expressed as milliequivalents (mEq) (Na + K – Cl) per kilogram diet. Two dietary treatments were CON (control diets were corn-soybean meal based with a calculated DCAD of 170 and 226 mEq/kg during late gestation and lactation, respectively) or ACI (acidogenic diets had a DCAD 100 mEq/kg lower than the control diets).

²Cad-mate (Granco Minerals, Disputanta, VA) is an acidogenic mineral supplement.

³The vitamin premix provided the following per kilogram of complete diet: 6613.8 IU of vitamin A as vitamin A acetate; 992.0 IU of vitamin D₃; 19.8 IU of vitamin E; 2.64 mg of vitamin K as menadione sodium bisulfate; 0.03 mg of vitamin B₁₂; 4.63 mg of riboflavin; 18.52 mg of D-pantothenic acid as calcium pantothenate; 26.46 mg of niacin; 0.66 mg of biotin.

⁴Mineral premix provided the following per kilogram of complete diet: 39.6 mg of Mn as manganous oxide; 165 mg of Fe as ferrous sulfate; 165 mg of Zn as zinc sulfate; 25.15 mg of Cu as copper sulfate; 0.30 mg of I as ethylenediamine dihydroiodide; and 0.30 mg of Se as sodium selenite.

⁵Calculated composition was based on NRC (2012).

⁶DCAD was calculated as mEq (Na + K – Cl) per kilogram diet.

⁷DCAD was calculated as mEq (Na + K – Cl – S) per kilogram diet. Only S from SO₄²⁻ (from mineral supplement) was considered in this equation.

⁸DCAD was based on the analyzed mineral composition.