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Journal of Poultry Science, 2017 Chickens display a wide spectrum of phenotypic variations in quantitative traits such as egg-related traits. Quantitative trait locus (QTL) analysis is a statistical method used to understand the relationship between phenotypic (trait measurements) and genotypic data (molecular markers).
Tatsuhiko Gotō, Masaoki Tsudzuki
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Poultry Science, 2005 Albumen height, albumen weight (AW), eggshell color (ESC), eggshell index, eggshell strength, eggshell thickness, eggshell weight (ESW), egg weight (EW), Haugh units, and yolk weight (YW) were measured in 2,272 eggs collected 3 d sequentially from 920 brown-egg dwarf layers caged individually.
G Y Xu, Zhuo-Cheng Hou, Ning Yang
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The relationship between eggshell colour and egg quality traits in table eggs
Indian Journal of Animal Research, 2014Variations in egg quality and yolk colour in relation to eggshell colour in commercial brown layer eggs were studied using 734 eggs. The traits of interest were eggshell colour, yolk colour, egg weight, Haugh unit value and shell strength. The results showed that egg weight and shell strength increased as the darkness of the shell increased, whereas ...
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Evaluation of egg production and egg quality traits of Noiler chickens
Nigerian Journal of Animal Science, 2021The study was conducted to evaluate the egg production performance and egg quality traits of Noiler chickens. A total of 135 adult Noiler hens were used for the study out of which 63 were black, 52 brown and 20 spotted. Specifically, laying characteristics, egg production and egg quality traits were assessed.
Dogara, M.U. +3 more
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British Poultry Science, 2012
1. Performance traits were measured on 1908 Japanese quail and egg quality traits assessed on 1800 eggs at 10 wk of age. 2. Genetic and phenotypic correlations were estimated using a bivariate animal model with restricted maximum likelihood using ASREML software. 3.
E, Lotfi, S, Zerehdaran, Z, Raoufi
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1. Performance traits were measured on 1908 Japanese quail and egg quality traits assessed on 1800 eggs at 10 wk of age. 2. Genetic and phenotypic correlations were estimated using a bivariate animal model with restricted maximum likelihood using ASREML software. 3.
E, Lotfi, S, Zerehdaran, Z, Raoufi
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Effects of the breeder age on the egg yield and egg quality traits of Landes geese (Anser anser)
Tropical Animal Health and Production, 2022This study aimed to determine the effects of the breeder age on the egg yield and egg quality traits of Landes geese in the first egg production cycle. One hundred ninety-four Landes geese aged 48 weeks were kept in the yard area throughout the egg production period.
Emre Cüneydioğlu +2 more
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The Repeatability of Egg Quality Traits in the Nigerian Local Chicken
East African Agricultural and Forestry Journal, 1995No Abstract.
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Inheritance of hatchability in broiler chickens and its relationship to egg quality traits
Poultry Science, 2010 The first objective of this study on broiler breeders was to investigate the genetic basis of variability in hatchability over age using a longitudinal model. Weekly percentage hatch of fertile and hatch of set eggs were available for 23,250 dams mated to 3,106 sires of the same age between the 28th and 54th week of life.
A Wolc, I M S White, W G Hill
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British Poultry Science, 2013
1. The egg quality of striped and normal duck eggs was compared to determine why striped eggs show decreased hatchability. A total of 430 eggs, obtained from a Pekin duck breeder flock aged 50-65 wks, were used in three experiments. The eggs were weighed and assigned randomly to measure egg quality traits, egg weight (EW) loss and hatchability during ...
J, Yuan +5 more
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1. The egg quality of striped and normal duck eggs was compared to determine why striped eggs show decreased hatchability. A total of 430 eggs, obtained from a Pekin duck breeder flock aged 50-65 wks, were used in three experiments. The eggs were weighed and assigned randomly to measure egg quality traits, egg weight (EW) loss and hatchability during ...
J, Yuan +5 more
openaire +2 more sources