Table 1.

Composition of experimental diets

	Whey permeatea, %
Item	7.50	11.25	15.00	18.75
Ingredient, %
Corn, yellow	53.14	49.39	45.63	41.84
Soybean meal, 48% CP	23.00	23.00	23.00	23.00
Whey permeate	7.50	11.25	15.00	18.75
Blood plasma	3.80	3.80	3.80	3.80
Poultry meal	7.00	7.00	7.00	7.00
Fish meal	2.00	2.00	2.00	2.00
Poultry fat	1.40	1.50	1.60	1.70
Dicalcium phosphate	0.31	0.19	0.08	0.00
Limestone	0.80	0.80	0.80	0.80
L-Lys HCl	0.25	0.26	0.27	0.27
DL-Met	0.11	0.12	0.13	0.14
L-Thr	0.04	0.04	0.04	0.05
Salt	0.22	0.22	0.22	0.22
Vitamin premixb	0.03	0.03	0.03	0.03
Trace mineral premixc	0.15	0.15	0.15	0.15
Zinc oxide	0.25	0.25	0.25	0.25
Calculated composition
DM, %	90.2	90.3	90.5	90.6
ME, kcal/kg	3413	3413	3414	3413
CP, %	24.7	24.5	24.3	24.1
SIDd Lys, %	1.35	1.35	1.35	1.35
SID Cys + Met, %	0.74	0.74	0.74	0.74
SID Trp, %	0.25	0.25	0.25	0.25
SID Thr, %	0.79	0.79	0.79	0.79
Ca, %	0.80	0.80	0.80	0.81
STTDe P, %	0.40	0.40	0.40	0.40
Total P, %	0.65	0.64	0.63	0.63
Analyzed composition, %
DM	86.7	86.9	87.5	87.6
CP	24.5	23.7	24.1	23.6
Lactosef	5.3	7.9	11.1	13.6

^a Treatments were supplemental levels of whey permeate in the diets (Agri-Mark, Inc., Middlebury, Vermont, USA)

^b The vitamin premix provided per kilogram of complete diet: 6,614 IU of vitamin A as vitamin A acetate, 992 IU of vitamin D₃, 19.8 IU of vitamin E, 2.6 mg of vitamin K as menadione sodium bisulfate, 0.03 mg of vitamin B₁₂, 4.6 mg of riboflavin, 18.5 mg of D-pantothenic acid as calcium panthonate, 26.5 mg of niacin, and 0.07 mg of biotin

^c The trace mineral premix provided per kilogram of complete diet: 33 mg of Mn as manganous oxide, 110 mg of Fe as ferrous sulfate, 110 mg of Zn as zinc sulfate, 16.5 mg of Cu as copper sulfate, 0.3 mg of I as ethylene diamine dihydroiodide, and 0.3 mg of Se as sodium selenite

^d SID = standardized ileal digestible

^e STTD P = standardized total tract digestible phosphorus

^f Lactose contents were analyzed by University of Missouri AESCL Analytical Services (Columbia, MO)