Table 1.

Nursery diet composition (as-fed basis)¹

Item	Phase 1	Phase 2	Phase 3
Ingredients, %
Corn	35.32	55.20	50.67
Whey powder	25.00	—	—
Soybean meal, 46.5% CP2	19.14	24.85	30.00
DDGS2	10.00	15.00	15.00
Soybean oil	2.50	—	—
Enzymatically treated soybean meal3	4.00	—	—
Calcium carbonate, 38% Ca	0.85	1.05	1.15
Monocalcium P, 21% P	0.60	1.00	1.00
Salt	0.30	0.65	0.50
l-Lysine-HCl	0.58	0.63	0.50
dl-Methionine	0.27	0.20	0.17
l-Threonine	0.21	0.23	0.18
l-Tryptophan	0.07	0.07	0.04
l-Valine	0.17	0.12	0.04
Phytase4	0.04	0.20	0.20
Mineral–vitamin premix5	0.55	0.55	0.55
Zinc oxide	0.40	0.25	—
Total	100	100	100
Calculated analysis
Standardized ileal digestible (SID) amino acids, %
Lysine	1.39	1.30	1.32
Isoleucine:lysine	55	54	60
Leucine:lysine	114	126	132
Methionine:lysine	38	38	37
Methionine + cysteine:lysine	59	60	60
Threonine:lysine	63	64	64
Tryptophan:lysine	20.6	20.2	19.3
Valine:lysine	70	70	69
SID lysine:net energy, g/Mcal	5.23	5.21	5.32
Net energy, kcal/kg	2,658	2,492	2,487
Ca, %	0.72	0.70	0.75
STTD P6, %	0.56	0.52	0.53

¹Phases 1, 2, and 3 were fed from 5 to 6, 6 to 10, and 10 to 20, respectively. The phase 2 diet was the only diet that included 441 mg/kg of CTC for pigs on the AB treatment.

²CP, crude protein; DDGS, dried distillers grains with solubles.

³HP 300 (Hamlet Protein Inc., Findlay, OH).

⁴In phase 1, provided 5,000 phytase units FTU per gram of phytase. In phases 2 and 3, provided 1,350 phytase units FTU per gram of phytase.

⁵Provided per kilogram of premix: 35.3 g Zn, 35.3 g Fe, 3.7 g Cu, 220.5 mg I, 8.8 g Mn, 100.3 mg Se, 16,534 mg niacin, 8,818 mg pantothenic acid, 2,645 mg riboflavin, 66.1 mg biotin, 661.4 mg folic acid, 440.9 mg pyridoxin, 1,653 mg thiamin, 1,873,910 IU vitamin A, 551,150 IU vitamin D, 20,039 IU vitamin E, 992 mg vitamin K, and 11 mg vitamin B12.

⁶Standardized total tract digestible P.