Effects of administration of four different doses of Escherichia coli phytase on femur properties of 16-week-old turkeys

Table 1 Composition and calculated nutritive value of the diet supplied in the positive control group (Group I)

Components (%)	Age of birds (weeks)
Components (%)	1 – 4	5 – 8	9 – 12	13 – 16
Wheat	15.00	15.00	15.00	15.00
Corn	30.12	35.36	39.41	46.35
Soybean meal	43.34	40.19	37.63	28.23
Potato protein	5.00	3.00	-	-
Soybean oil	1.44	1.10	2.00	-
Animal fat	-	1.10	2.13	5.01
NaHCO₃	0.15	0.10	0.10	0.10
Salt	0.21	0.22	0.20	0.15
Limestone	1.68	1.38	1.23	1.12
MCP	2.00	1.55	1.23	1.05
DL-Methionine	0.31	0.34	0.34	0.33
L-Lysine HCl	0.32	0.29	0.29	0.30
L-Threonine	0.07	0.05	0.13	0.08
Premix (vitamins + trace minerals)	0.25¹	0.25¹	0.25²	0.25²
Choline chloride	0.11	0.08	0.07	0.06
Celite	-	-	-	2.00
Energy and nutrient content
AME_N (MJ/kg)	11.61³	12.01³	12.62³	13.22³
Crude protein (g/kg)	280³/284⁴	255³/257⁴	225³/231⁴	190³/202⁴
Methionine (g/kg)	7.4³	7.2³	6.6³	6.1³
Methionine + Cysteine (g/kg)	11.8³	11.3³	10.4³	9.4³
Lysine (g/kg)	18.2³	16.1³	13.9³	11.7³
Calcium (g/kg)	12.0³/12,8⁴	10.0³/10.0⁴	8.5³/8.4⁴	7.5³/7.8⁴
Total phosphorus (g/kg)	8.8³/8.7⁴	7.7³/7.4⁴	7.0³/6.8⁴	6.0³/5.9⁴
Available (Av) phosphorus (g/kg)	6.0³	5.0³	4.3³	3.8³

¹Vitamin and mineral premix - nutrients per kg diet: 12,500 IU vitamin A; 5,000 IU vitamin D₃; 100 IU vitamin E; 4.0 mg vitamin K; 4.5 mg vitamin B₁;15 mg vitamin B₂; 5 mg vitamin B₆; 0.04 mg vitamin B₁₂; 110 mg nicotinic acid; 28 mg pantothenic acid; 3.5 mg folic acid; 0.375 mg biotin; 80 mg iron; 25 mg copper; 160 mg manganese; 160 mg zinc; 2.5 mg iodine; 0.3 mg selenium.
²Vitamin and mineral premix - nutrients per kg diet: 9,600 IU vitamin A; 4,800 IU vitamin D₃; 60 IU vitamin E; 3.0 mg vitamin K; 2.0 mg vitamin B₁;12 mg vitamin B₂; 5 mg vitamin B₆; 0.025 mg vitamin B₁₂; 85 mg nicotinic acid; 23 mg pantothenic acid; 2.5 mg folic acid; 0.375 mg biotin; 40 mg iron; 25 mg copper; 120 mg manganese; 120 mg zinc; 2 mg iodine; 0.3 mg selenium.
³Calculated; ⁴Analyzed [15].

ISSN: 1746-6148