Apparent and standardized ileal nutrient digestibility of broiler diets containing varying levels of raw full-fat soybean and microbial protease

Table 2 The analysed crude protein (CP) and amino acid composition (g/kg) of the study diets fed in days of 10 to 24

Protease (PROT/kg)	0			15,000			Nitrogen-free diet
RFFS¹ (g/kg)	0	45	75	0	45	75	0
Crude protein	224	219	222	224	221	217	<6.0
Indispensable amino acids
His	5.5	5.3	5.5	5.5	5.4	5.2	<0.1
Arg	14.3	14.2	14.4	14.1	14.4	13.0	<0.4
Thr	8.7	8.4	8.8	9.2	9.2	8.4	<0.2
Lys	12.8	12.3	13.4	12.8	13.3	11.9	<0.3
Met	5.1	4.7	5.2	5.8	5.3	5.0	<0.1
Val	10.7	10.2	10.7	10.5	10.4	10.0	<0.3
Ile	9.0	8.7	9.1	8.8	8.8	8.2	<0.2
Leu	18.0	17.6	18.1	17.9	18.0	17.9	<0.5
Phe	10.4	10.1	10.4	10.3	10.3	9.8	<0.3
Dispensable amino acids
Ser	10.6	10.4	10.6	10.5	10.5	10.1	<0.3
Gly	11.4	12.4	11.4	10.6	11.1	10.4	<0.3
Asp	20.3	20.1	20.7	19.8	20.4	19.0	<0.5
Glu	37.2	37.0	37.8	36.8	37.6	36.2	<1.0
Ala	11.0	11.2	11.0	10.7	10.9	10.8	<0.3
Pro	13.6	14.0	13.6	13.3	13.5	13.2	<0.4
Tyr	4.9	5.0	5.2	5.0	5.1	4.4	<0.1

¹RFFS = raw full-fat soybean (SBM was replaced by RFFS at zero, 15 and 25%, equivalent to zero, 45 and 75 g/kg of diet, respectively). A 15000 PROT/kg = 15,000 units of protease/kg of diet, equivalent to 200 mg of protease / kg of diet

ISSN: 2055-0391