The research was carried out in poultry farm, department of Animal
production, College of Agriculture and forestry, university of Mosul / Mosul /
Iraq. Experimental treatments include two factors, strain of Japanese quail
(Coturnix coturnix japonica) and dried bread waste levels with interaction
between them. The first factor includes desert and white strain, while the second
factor include 5 levels of dried bread waste that is 0, 12, 24, 36 and 48% from
total ration, the interaction between last factors was studied in this research.
The research divided in to two stages: grower stage (1-35 days), 600 birds
of Japanese quail (300 birds / strain) randomly distributed in 5 treatments group
with 3 replicates for each treatment and 20 birds in each replicate. Layer stage
(42-101days), 240 quail females (120 female / strain) randomly distributed in 5
treatments with 3 replicates for each treatment and 8 quail females in each
replicate. Feed and water according by ad-libitum all research period.
Statistical analysis in grower stage showed no significant differences (p≤
0.05) for strain, dried bread waste levels and their interaction on body weight,
weight gain, mortality percent, feed intake, feed conversion ratio, carcass weight
and edible giblets. While significant effect (p≤ 0.05) found on water intake and
dressing percent for dried bread waste levels and interaction between strain and
dried bread waste levels. The best net revenue (ID / Kg live weight) for desert
quail strain, 48% dried bread waste and interaction between desert quail strain
and 48% dried bread waste.
In the layer stage: the results of statistical analysis showed also no
significant effect (p≤ 0.05) on all treatments and all factors, except yolk color
that has significant effect (p≤ 0.05) for dried bread waste level. The best net
revenue record for white quail strain, 48% dried bread waste level and
interaction for strain with 48% dried bread waste