Debranching enzymes decomposed corn arabinoxylan into xylooligosaccharides and achieved prebiotic regulation of gut microbiota in broiler chickens

Table 1 Composition and nutrient levels of corn basal diet (as-fed basis)

Items, % for units unless noted	d 1 to 21
Ingredients
Corn (7.8%, crude protein)	51.50
Soybean meal (46%, crude protein)	30.58
DDGS^a (28%, crude protein)	5.00
Corn gluten meal (63.5%, crude protein)	4.00
Wheat flour^b	2.00
Soybean oil	2.40
Limestone	1.27
Sodium chloride	0.35
Dicalcium phosphate	1.94
Choline chloride (50%)	0.20
DL-methionine (98%)	0.24
L-lysine·HCl (99%)	0.26
Antioxidant	0.02
Multivitamin^c	0.03
Multimineral^d	0.20
Phytase (10,000 U/g)	0.01
Total	100.00
Calculated nutrient levels
Metabolic energy, Mcal/kg	2.95
Crude protein	22.5
Available phosphorus	0.45
Calcium	1.00
Lysine	1.30
Methionine	0.59
Threonine	0.85
Tryptophan	0.25

^aDDGS, distillers dried grains with solubles
^bAdding flour to the basal diet was done to improve pelleting quality
^cSupplied per kilogram of diet: retinyl acetate, 9500 IU; cholecalciferol, 2500 IU; α-tocopherol acetate, 30 IU; menadione, 2.65 mg; thiamin, 2 mg; riboflavin, 6 mg; cyanocobalamin, 0.025 mg; biotin, 0.0325 mg; folic acid, 1.25 mg; pantothenic acid, 12 mg; and niacin, 50 mg
^dSupplied per kilogram of diet: copper, 8 mg; zinc, 75 mg; iron, 80 mg; manganese, 100 mg; selenium, 0.15 mg; and iodine, 0.35 mg

ISSN: 2049-1891