The research was conducted to determine the effects of substituting raw maize with flaked
maize in diets containing different levels of metabolic energy on the performance, egg quality,
and serum parameters of layer quails. In the experiment, 120 female quails at ten weeks of age
were randomly allocated to six treatment groups with four replicates, each consisting of five
quails. The quails were fed six diets, with two forms of maize (raw or flaked) and three
metabolic energy levels (2750, 2825 or 2900 (control) kcal/kg) during a ten-week trial.
Compared with the control group, reducing the metabolic energy level of the diet to 2750
kcal/kg negatively affected egg production (P < 0,01), egg mass (P < 0,01), feed conversion ratio
(P < 0,01), and serum cholesterol concentration (P < 0,05). Eggshell thickness decreased
significantly in the group receiving 2750 kcal/kg metabolic energy in the diet, and the yolk b*
value increased significantly (P < 0,01). The use of flaked maize in the diets significantly
increased egg production (P < 0,05), egg mass (P < 0,05), eggshell thickness (P < 0,05), and yolk
L* value (P < 0,01) and significantly decreased the feed conversion ratio (P < 0,05) and b* value
of the yolk (P < 0,05). Although the effects of the interactions of the metabolic energy levels and
forms of maize on the egg yolk b* value were significant (P < 0,01), this effect was not significant
for the other parameters. The results indicate that layer quails can be fed diets containing 2825
kcal/kg metabolic energy and that replacement of raw maize with flaked maize in the diet
positively affects performance and egg quality.
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