Effects of egg weight and light sources during incubation period on embryonic development and post-hatch growth of Japanese quail (Coturnix japonica)

2019 ◽  
Author(s):  
A.M. Hanafy* ◽  
I.M. Hegab
Keyword(s):  
Embryonic Development ◽  
Incubation Period ◽  
Japanese Quail ◽  
Coturnix Japonica ◽  
Light Sources ◽  
Egg Weight

scholarly journals Effect of egg weight and oviposition time on hatchability and post hatch performance of Japanese quail (Coturnix coturnix japonica)

2020 ◽  
Vol 40 (1) ◽  
pp. 102-110
Author(s):  
L. T. Egbeyale ◽  
H. O. Fatoki ◽  
O. A. Adeyemi
Keyword(s):  
Weight Loss ◽  
Treatment Group ◽  
Factorial Design ◽  
Japanese Quail ◽  
Egg Size ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Egg Weight ◽  
Coturnix Coturnix ◽  
Ad Libitum

A total of three hundred (300) Japanese quail eggs were used to study the effect of oviposition time and egg weight on hatchability and post-hatch performance. The eggs were grouped into two (2) of 150 eggs based on the oviposition time of Morning and Afternoon. The eggs in each group (150) were further sub-grouped based on the egg weights of 8 to10 grams designated as small sized and 10.1 to 12 grams designated as big size in a 2 x 2 factorial design trial of 4 treatments. Each treatment had seventy five (75) eggs each with three replicates. The four treatments groups were; Big Morning, Small Morning, Big Afternoon, Small Afternoon. Each treatment group was replicated three times with each replicates consisting of twenty-five (25) eggs. Hatchability parameters were determined during incubation period of 18 days. The quail chicks were fed ad-libitum and the post- hatch performance was studied for eight (8) weeks. The data generated were subjected to a one-way analysis of variance. Oviposition time and size of the egg significantly (p<0.05) affected the average hatch weight. The effect of interaction of oviposition time and egg size on post-hatch performance did not have any significant (p>0.05) influence. Oviposition time had a positive correlation (p<0.05) with egg weight, egg weight loss, percent egg weight loss and fertility percentage but negatively correlated with average hatch weight and hatchability percentage. Meanwhile egg size had a positive significant (p<0.01) correlation with average hatch weight. It was concluded that eggs ranging between 10.1 to 12 grams will produce higher hatch weight. However, setting of Japanese quail eggs ranging between 8 to 12 grams irrespective of oviposition time could not affect post-hatch performance of the chicks.

Effect of different light sources on reproductive anatomy and physiology of Japanese quail ( Coturnix coturnix japonica )

2016 ◽  
Vol 168 ◽  
pp. 50-56 ◽  
Author(s):  
M.F. Bobadilla-Mendez ◽  
C.P. Rojas-Granados ◽  
E.F. Andrade ◽  
P.L. Retes ◽  
L.G. Ferreira ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Coturnix Japonica ◽  
Light Sources ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix ◽  
Anatomy And Physiology ◽  
Reproductive Anatomy

scholarly journals Study on eggs of Japanese quail (Coturnix coturnix japonica) during incubation in the controlled laboratory conditions

2012 ◽  
Vol 4 (1) ◽  
pp. 85-86 ◽  
Author(s):  
R. A. Patil Bhagat ◽  
S. B. Zade ◽  
P. N. Charde
Keyword(s):  
Japanese Quail ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Shell Weight ◽  
Egg Weight ◽  
Coturnix Coturnix ◽  
Laboratory Conditions ◽  
Progressive Growth ◽  
Day By Day

Study on newly laid eggs of Japanese quail Coturnix coturnix japonica was undertaken for a period of 18 days on incubation in controlled laboratory conditions. The aim of the study was to evaluate the changes in egg weight, shell weight, yolk weight and embryo weight throughout the period of incubation. It had been found that as the embryo grows, the egg weight slowly goes down while embryo weight goes on increasing day by day. The study inferred that the shift or reduction in weight of egg is attributable to the progressive growth of embryo which utilizes its yolk contents for its growth. Apart from this, the shell weight also reduced from first day to last day in order to facilitate hatching of the embryo.

YELLOW: A MUTANT PLUMAGE COLOR, SEGREGATING INDEPENDENTLY FROM BROWN, IN JAPANESE QUAIL

1980 ◽  
Vol 22 (3) ◽  
pp. 411-416 ◽  
Author(s):  
C. W. Roberts ◽  
J. E. Fulton
Keyword(s):  
Embryonic Development ◽  
Japanese Quail ◽  
Early Stage ◽  
Coturnix Japonica ◽  
Autosomal Gene ◽  
Coturnix Coturnix Japonica ◽  
Plumage Color ◽  
Heterozygous Condition ◽  
Coturnix Coturnix ◽  
Dominant Lethal

Two birds of Japanese quail (Coturnix coturnix japonica) with "yellow" plumage were found in a brown feathered population hatch. The trait was demonstrated to be due to the heterozygous condition of a single, dominant, autosomal gene (Y). The Y/Y genotype was found to be lethal presumably at a very early stage of embryonic development. A backcross test of 994 observations indicated that the loci for the brown and yellow plumage traits were inherited independently. The yellow feathered gene may also act as a partially dominant lethal with approximately 10% mortality.

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