Egg Quality Characteristics and Hatchability of Two Colour Variants of Japanese Quails (Coturnix coturnix japonica)

Nwachukwu, Eugene Nnamdi; Ogbu, C. C.

doi:10.5455/ijlr.20150702092522

Int. J. Livest. Res.

2015

DOI: 10.5455/ijlr.20150702092522

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Egg Quality Characteristics and Hatchability of Two Colour Variants of Japanese Quails (Coturnix coturnix japonica)

Eugene Nnamdi Nwachukwu¹,

C. C. Ogbu²

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“…In contrast to the white line was given the higher value of fertility rate (80.76±2.88). These studies were also in the line with those of the results showed by Nwachukwu et al,(30) and Ahmed & AL-Barzinji, (3) who detected that the fertility and hatchability percentage can be significantly (P≤0.05) impacted by different genotypes of quails. Also, the eggshell colour and spot colour had a significant effect on the incubation results.…”

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confidence: 90%

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

Ahmed¹

2022

Iraqi J. Agric. Sci.

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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.

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confidence: 90%

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

Ahmed¹

2022

Iraqi J. Agric. Sci.

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Prediction Model of Chick Hatching Weight with Restricted Ridge Regression

Hark

Alaşahan

2020

AJRiZ

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In this study, it is aimed to obtain prediction model for chick hatching weight by using shell ground color, shape characteristics, shell characteristics, white + yellow weight and weight loss property values during hatching of quail hatching eggs. Multicollinearity is one of the most common problems in prediction models. It is defined as linear dependence between explanatory variables in linear regression analysis. In this case, the ordinary least squares (OLS) estimator is not a predictor with minimum variance between unbiased estimators. Accordingly, the parameter estimates are away from the real value. One proposed approximation approach to eliminate this problem is restricted ridge regression. According to the findings obtained from 523 chick hatching eggs, elongation, egg shell weight, shell weight + embryo waste (g), absolute weight loss after transfer (g), relative weight loss after transfer (%) and absolute weight loss in 0-14 days (g) were determined as factors affecting chick hatching weight. In the linear modeling approach, which is used to determine these factors, multicollinearity problem is revealed. Therefore, in order to obtain a stable set of parameters, restricted ridge regression analysis was applied and estimations with lower standard errors than standard errors of the parameters obtained from the (least squares) LSQ approach were obtained.

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Egg Quality Characteristics and Hatchability of Two Colour Variants of Japanese Quails (Coturnix coturnix japonica)

Cited by 2 publications

References 0 publications

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

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

Prediction Model of Chick Hatching Weight with Restricted Ridge Regression

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