Impact of Egg Shell and Spots Colour on the Quality of Hatching Eggs Derived From Three Lines of Local Quail

Abstract

This study was carried out to analyze the impact of lines, egg shell colour and intraction between (Line ⁎ eggshell colours) on egg quality characteristics and hatching parameters assess the correlation between these traits in three local quail eggs (desert, brown and white). A total of 409 eggs were collected from female quails during 16 weeks divided into five groups on the basis of eggshell colour and spot colour for each line. The results revealed that there were significant (P≤0.05) variances among lines for quality characteristics of the whole egg (weight, length, width, Egg volume, Haugh unit), albumen (weight, height, diameter), yolk (weight, height, index, Yolk/albumen) and shell (weight, thickness, egg surface area, unit surface). The desert line resulted in the best quality. The results demonstrated that internal and external egg quality characters were differed significantly among egg shell colour. Whereas, yolk parameters such as: yolk weight, yolk height, Yolk diameter and Yolk percentage revealed no significance differences among these groups. Phenotypic correlation appeared that there were significant correlation coefficients among the internal and external egg quality traits. The incubation characteristics, fertility, hatchability of fertile eggs, hatchability of set eggs and Chick hatching weight were significantly differences among eggshell colour groups within lines.

The relationship between eggshell color, hatching traits, fertility, mortality, and some qualitative aspects of Japanese quail (Coturnix japonica) eggs

“…None of the results, however, were comparable to the previous ones, which showed that the eggshell color of pheasant eggs, whether blue, light brown, dark brown, or olive green, had no discernible effect on the egg's weight or the eggshell ( Godfrey, 1947 ; Ahmed, 2022 ). While our findings were perfectly consistent with a previous study that reported significant differences in egg sizes, width, and form, the egg shape index was not significant ( Choprakarn et al, 1998 ).…”

“…It was found that the hatchability qualities of Japanese quail eggs were affected by the color of their eggshells ( Gutiérrez et al, 2021 ). Furthermore, it was revealed that in local quail, breed differences and eggshell color had a significant influence on egg quality measures and hatchability indications ( Ahmed, 2022 ). We found that the hatching rate of chicks from eggs with very bright shells was much lower than that of eggs with darkish shells, which was consistent with previous research on chickens ( Godfrey, 1947 ).…”

“…To measure the width and length of the eggs, a digital Mitutoyo vernier calipers (Mitutoyo Corporation, Kanagawa, Japan) was used. The external egg quality characteristics such as egg shape index, shell ratio, and elongation were determined as previously described by Ahmed (2022) .…”

The incorporation of sumac seed powder (Rhus coriaria L.) into the diet of quail breeders as a novel feed additive

“…The egg quality (exterior and inner metrics) including egg width, egg length, shell weight, shell thickness, albumen %, yolk%, yolk index, Haugh unit, and unit surface shell weight, were determined as recommended by Romanoff and Romanoff (1949) . The external egg quality characteristics such as egg shape index, shell ratio, were determined as previously described by Ahmed (2022) . The albumen and yolk were separated from one another without causing any damage to the egg yolk, and the third process involved determining the weight of the egg yolk.…”