2.5. Statistical analysis
All statistical methods were applied using SAS statistical system
Package V9.2 (SAS, 2002). After testing normality using Kolmogorov-Smirnov
procedure, data were analyzed by means of
one-way analysis of variance (ANOVA) through the applied general
linear models (GLM) procedure. The MIXED model included the
fixed effects of the treated groups (3 levels) and the random effects
of replicates. The Duncan's multiple range test was performed to
Table 1
Diet composition in the laying period.
% diet
Ingredients
Yellow corn 64.50
Soybean meal (44%) 20.50
Concentrate (52%) 10.00
Di- calcium phosphate 2.31
Limestone 0.96
DL- methionine 0.09
Lysine 0.08
Vitamin and trace mineral 0.30
Premix 1.06
Coccidostate 0.10
Antioxidant 0.10
Calculated analysis
ME (KJ/kg) 11,937
Crude protein (cp %) 20.00
Calcium% 2.33
Available phosphorus% 0.66
Lysine % 1.04
Methionine % 0.52
M.S. El-Tarabany / Journal of Thermal Biology 61 (2016) 38–43 39
compare means. Coefficients of Pearson correlation were estimated
to evaluate the relationship between external and internal
egg quality traits.