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. 2018 Aug 31;98(1):366–372. doi: 10.3382/ps/pey386

Table 4.

Effects of MHA-Zn on tibia quality and mineral concentration in tibia of laying hens.1

Experimental treatment
Items 80 mg/kg ZnSO4 20 mg/kg MHA-Zn2 40 mg/kg MHA-Zn 80 mg/kg MHA-Zn P-Value
Tibia length (mm)
Week 59 to 62 111.48 ± 4.32 111.49 ± 2.59 111.44 ± 2.70 111.56 ± 3.78 1.000
Week 63 to 66 111.83 ± 2.60 111.01 ± 3.02 111.99 ± 1.86 111.66 ± 3.75 0.913
Week 67 to 70 111.84 ± 2.24 111.90 ± 2.76 111.28 ± 2.98 111.41 ± 4.16 0.971
Week 71 to 72 111.67 ± 2.09 111.50 ± 2.11 111.35 ± 2.55 111.40 ± 2.83 0.994
Tibia strength (N)
Week 59 to 62 166.35 ± 7.65 165.25 ± 12.11 168.51 ± 6.25 165.82 ± 9.65 0.904
Week 63 to 66 150.56 ± 7.09b 149.42 ± 8.74b 158.38 ± 6.10a 161.78 ± 5.32a 0.004
Week 67 to 70 148.43 ± 6.64b 140.08 ± 9.56c 156.29 ± 6.67a 160.40 ± 7.24a <0.001
Week 71 to 72 145.27 ± 5.97b 138.77 ± 10.24b 155.37 ± 8.30a 158.29 ± 7.20a <0.001
Ca content (%)
Week 59 to 62 21.82 ± 0.46b 21.02 ± 2.22b 22.02 ± 1.42b 23.69 ± 1.02a 0.006
Week 63 to 66 20.87 ± 1.55b 20.81 ± 1.31b 22.19 ± 1.46a 23.55 ± 1.04a <0.001
Week 67 to 70 20.84 ± 0.98b,c 20.37 ± 1.46c 21.90 ± 1.24a,b 22.47 ± 1.58a 0.009
Week 71 to 72 20.82 ± 1.12b,c 20.27 ± 1.18c 21.79 ± 1.16a,b 22.33 ± 0.87a 0.010
P content (%)
Week 59 to 62 8.83 ± 0.34 8.67 ± 0.64 8.74 ± 0.64 8.76 ± 0.69 0.997
Week 63 to 66 8.76 ± 0.60 8.39 ± 0.42 8.48 ± 0.42 8.23 ± 0.40 0.177
Week 67 to 70 8.63 ± 0.32 8.52 ± 0.24 8.56 ± 0.69 8.56 ± 0.68 0.982
Week 71 to 72 8.25 ± 0.49 8.76 ± 0.55 8.65 ± 0.53 8.60 ± 0.99 0.393
Zn content (mg/kg)
Week 59 to 62 504.73 ± 64.50 494.38 ± 61.01 503.1 ± 58.14 507.41 ± 49.67 0.978
Week 63 to 66 443.05 ± 49.89b 427.72 ± 49.05b 462.64 ± 47.97a,b 499.14 ± 34.48a 0.030
Week 67 to 70 420.78 ± 45.07b 410.62 ± 41.34b 448.36 ± 40.02a,b 486.21 ± 23.99a 0.008
Week 71 to 72 377.21 ± 36.41b 376.78 ± 71.39b 438.36 ± 40.02a 476.21 ± 23.99a 0.001

1Data represent the means from 8 replicates per treatment. Values are the means ± SD.

2MHA-Zn: methionine hydroxy analog chelate zinc.

a–cMeans with different superscripts within the same row are significantly different (P < 0.05).