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Table 4 Morphometric, densitometric and mechanical properties of femur in 112-day old turkeys from the positive and negative control groups (Group I and Group II), and the groups receiving diet experimentally enriched with 125 (Group III), 250 (Group IV), 500 (Group V) and 1000 (Group VI) FTU/kg of Escherichia coli phytase

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

Investigated parameter Group I (PC group; n = 8) Group II (NC group; n = 8) Group III (n = 8) Group IV (n = 8) Group V (n = 8) Group VI (n = 8)
Bone weight (g) 37.41 ± 0.91ab 34.44 ± 1.34b 37.89 ± 1.64ab 34.49 ± 0.62b 39.58 ± 1.70a 38.84 ± 0.86a
Bone length (mm) 145.4 ± 1.0a 146 ± 1.15a 145.9 ± 1.1a 146.1 ± 0.9a 149.8 ± 1.7b 148.4 ± 1.0ab
Bone volume (cm3) 17.27 ± 0.74ab 15.62 ± 1.00ab 17.17 ± 1.13ab 15.20 ± 0.37a 18.06 ± 1.06b 17.52 ± 0.7ab
Cortical bone area (mm2) 89.0 ± 2.4a 80.75 ± 2.8b 72.6 ± 2.5c 70.3 ± 1.5c 69.5 ± 1.7c 71.3 ± 3.2c
Cross-sectional area (mm2) 77.1 ± 3.5a 76.3 ± 4.3a 100.2 ± 4.3b 79.5 ± 2.8a 83.7 ± 2.4a 88.7 ± 6.4a
Second moment of inertia (mm4) 2476 ± 177ab 2029 ± 148a 3338 ± 254c 2269 ± 105ad 2703 ± 133bde 3172 ± 258ce
Mean relative wall thickness 0.213 ± 0.010a 0.234 ± 0.016a 0.269 ± 0.007b 0.220 ± 0.011a 0.217 ± 0.007a 0.206 ± 0.016a
Cortical index 17.5 ± 0.6a 18.8 ± 1.0a 21.1 ± 0.4b 17.9 ± 0.7a 17.8 ± 0.4a 16.9 ± 1.1a
Trabecular bone density (g/cm3) 0.839 ± 0.028ab 0.844 ± 0.019ab 0.893 ± 0.021a 0.823 ± 0.015b 0.847 ± 0.017ab 0.854 ± 0.015ab
Cortical bone density (g/cm3) 1.967 ± 0.060ab 1.925 ± 0.040a 2.065 ± 0.037bc 2.145 ± 0.048c 2.135 ± 0.039c 2.091 ± 0.043bc
Mean volumetric bone mineral density (g/cm3) 1.592 ± 0.019 1.546 ± 0.019 1.556 ± 0.031 1.595 ± 0.023 1.575 ± 0.021 1.543 ± 0.018
Maximum elastic strength (N) 242 ± 14a 305 ± 21ab 330 ± 21b 350 ± 30b 295 ± 11ab 266 ± 26a
Ultimate strength (N) 526 ± 42 576 ± 35 586 ± 28 575 ± 43 569 ± 40 493 ± 44
  1. Values are means ± SEM.
  2. a-eStatistically significant differences between the groups are indicated with different superscript letters for P ≤ 0.05.