Table 3.

Composition of experimental diets, as-fed basis, Exp. 2

Ingredient, %	Positive control	Negative control	Corn-expressed phytase1		Commercial phytase2
			500 FTU3	1,000 FTU	500 FTU	1,000 FTU
Ground corn	64.75	66.45	66.43	66.41	66.445	66.44
Soybean meal	29.75	29.75	29.75	29.75	29.75	29.75
Choice white grease	2.00	1.35	1.35	1.35	1.35	1.35
Limestone	1.16	1.01	1.01	1.01	1.01	1.01
Monocalcium phosphate	1.00	0.10	0.10	0.10	0.10	0.10
l-Lys HCl, 78% Lys	0.42	0.42	0.42	0.42	0.42	0.42
dl-Met	0.10	0.10	0.10	0.10	0.10	0.10
l-Thr	0.12	0.12	0.12	0.12	0.12	0.12
Sodium chloride	0.40	0.40	0.40	0.40	0.40	0.40
Vitamin–mineral premix4	0.30	0.30	0.30	0.30	0.30	0.30
Phytase premix5	—	—	0.02	0.04	0.005	0.01
Total	100.00	100.00	100.00	100.00	100.00	100.00

¹Corn-expressed phytase (GraINzyme; Agrivida, Inc., Woburn, MA).

²Commercial phytase (AxtraPhy; Danisco Animal Nutrition-DuPont Industrial Biosciences, Waukesha, WI).

³FTU = units of phytase.

⁴Provided the following quantities of vitamins and micro minerals per kilogram of complete diet: vitamin A as retinyl acetate, 11,136 IU; vitamin D₃ as cholecalciferol, 2,208 IU; vitamin E as dl-alpha tocopheryl acetate, 66 IU; vitamin K as menadione dimethylprimidinol bisulfite, 1.42 mg; thiamin as thiamine mononitrate, 0.24 mg; riboflavin, 6.59 mg; pyridoxine as pyridoxine hydrochloride, 0.24 mg; vitamin B₁₂, 0.03 mg; d-pantothenic acid as d-calcium pantothenate, 23.5 mg; niacin, 44.1 mg; folic acid, 1.59 mg; biotin, 0.44 mg; Cu, 20 mg as copper sulfate and copper chloride; Fe, 126 mg as ferrous sulfate; I, 1.26 mg as ethylenediamine dihydriodide; Mn, 60.2 mg as manganese sulfate; Se, 0.3 mg as sodium selenite and selenium yeast; and Zn, 125.1 mg as zinc sulfate.

⁵The GraINzyme phytase premix contained 2,500 FTU per gram, whereas the AxtraPhy phytase premix contained 10,000 FTU per gram.