Effect of protease supplementation on apparent ileal crude protein and amino acid digestibility of over-processed soybean meals in broilers

Table 1 Ingredient and nutritional composition of the experimental diets, g/kg as is

Ingredients	Basal diet	Basal diet + enzyme
Dextrose^a	507	506.4
Soybean meal^b	416	416
Soybean oil	40	40
Dicalcium phosphate	19	19
Calcium carbonate	10	10
Cr₂O₃	3	3
Sodium bicarbonate	2	2
Salt	2	2
Vitamins and minerals premix^c	1	1
Enzyme^d	–	0.6
Nutritional composition (calculated)
Metabolizable energy, kcal/kg	3110	3107
Crude protein	196.10	196.10
Available phosphorus	5.02	5.02
Calcium	8.49	8.49

^aFufeng Group, China
^bCommercial soybean meal used was unautoclaved, autoclaved 30 min at 120 °C or autoclaved 60 min at 120 °C
^cVitamins and minerals supplied per kg of diet: Cu (sulfate), 12 mg; Fe (sulfate), 40 mg; I (iodide), 1 mg; Se (selenate), 0.30 mg; Mn (sulfate and oxide), 80 mg; Zn (sulfate and oxide), 80 mg; retinol, 10,000 UI; cholecalciferol, 3000 UI; tocopheryl acetate, 35 UI; menadione, 2.50 mg; thiamine, 1.75 mg; riboflavin, 6.50 mg; niacin, 55 mg; pantothenate 10.70 mg; pyridoxine, 3.60 mg; folate, 1.50 mg; cyanocobalamin, 15 μg; biotin, 110 μg
^dRONOZYME ProAct, Novozymes, Krogshoejvej, Denmark

ISSN: 2049-1891