Selected Traits of Hatched and Unhatched Eggs and  Growth Performance of Yellow Japanese Quails

G  Copur Akpinar; S  Alasahan; T  Ayasan

Selected Traits of Hatched and Unhatched Eggs and Growth Performance of Yellow Japanese Quails

Autores

G Copur Akpinar

S Alasahan

T Ayasan

Editor

Fundação APINCO de Ciência e Tecnologia Avícolas

Descripción

This study was carried out to investigate selected traits of hatched and unhatched eggs and chick growth performance of yellow J apanese quails ( Coturnix japonica ). Eggshell temperature at the time of transfer to the hatcher was higher in hatched eggs (38.09 o C) than in unhatched eggs (37.43 o C) ( p= 0.000), lower in eggs with in early embryonic mortality (37.39 o C) than those with late embryonic mortality (38.13 o C) ( p= 0.000), and higher in eggs with female chicks (38.14 o C) than those with male chicks (37.95 o C). Lower eggshell, yolk, and albumen weights were determined in eggs with embryonic mortality of 17-18 days (0.58 g, 3.13 g and 4.96 g) compared with those with 10-16 days (0.67 g, 3.55 g and 5.58 g) and embryonic mortality of 1-9 days (0.75 g, 3.95 g and 6.19 g) ( p= 0.000). Lower egg weight loss was obtained in eggs with embryonic mortality (13.85%) of 1-9 days than those with embryonic mortality of 17-18 days (26.48%) ( p= 0.001). Females were heavier at chick weight (8.98 g vs. 8.63 g; p= 0.033) and at 4 (231.81 g vs. 211.43 g; p< 0.000) and 5(260.69 g vs. 231.87 g; p< 0.000) weeks of age than males, and had longer left shanks (34.39 mm vs. 33.61 mm; p= 0.004).