Table 5 Tibia weight, tibia length, Seedor index, tibia strength, ash, calcium (ca), phosphorus (P), and ca: P ratio of laying hens fed different sources and levels of Zn, Mn, Cu, Fe, Se, and I from 78 to 98 weeks of age.

From: Levels of substitution of inorganic mineral to amino acids complexed minerals on old laying hens

Treatments

Tibia weight

Tibia length

Seedor Index

Tibia strength

Ashes (g)

Ashes (%)

Ca

(mg/kg)

P

(mg/kg)

Ca: P ratio

(mg)

(mm)

(N)

IM

7727

114

68.2

259

2.56

34.3

176

79.9

2.21

AACM70

7621

114

70.7

284

2.64

35.2

169

75.8

2.23

AACM50

8127

113

71.8

306

2.74

34.9

195

87.4

2.23

AACM40

8229

114

72.1

276

2.73

34.0

156

69.3

2.26

Average

7918

114

70.7

281

2.66

34.6

174

77.9

2.23

SEM

102.2

0.28

0.74

9.3

0.049

0.47

6.4

3.01

0.007

P-values

 

Dunnett

0.092

0.718

0.201

0.331

0.580

0.822

0.192

0.177

0.124

Linear1

0.149

0.472

0.073

0.072

0.520

0.393

0.364

0.333

0.172

Quadratic1

0.201

0.710

0.691

0.919

0.683

0.818

0.052

0.053

0.435

  1. SEM = standard error of the mean.
  2. IM = 60, 60, 7, 40, 0.2, and 2 mg/kg of Zn, Mn, Cu, Fe, Se, and I, respectively;
  3. AACM70 = 42.0, 42.0, 4.9, 28, 0.14, and 1.4 mg/kg of Zn, Mn, Cu, Fe, Se, and I, respectively;
  4. AACM50 = 30, 30, 3.5, 20, 0.10, and 1 mg/kg of Zn, Mn, Cu, Fe, Se, and I, respectively;
  5. AACM40 = 24, 24, 2.8, 16, 0.08, and 0.80 of Zn, Mn, Cu, Fe, Se, and I, respectively1. Orthogonal polynomial contrast.
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