Results 21 to 30 of about 13,650 (237)

SAMPLING TECHNIQUE THE EGGSHELL THICKNESS

Journal of microbiology, biotechnology and food sciences
The aim of the study was to investigate the shell thickness of table eggs using a destructive method with a focus on the technique of sampling from three locations in the equatorial plane, the sharp and the blunt end of the egg. The subject of the study was the eggshell thickness with membranes of the influence of the sample taken on the egg in ...
Michal Angelovič, Lucia Zelenakova
openaire   +3 more sources

Reproductive correlates of eggshell thickness in European woodpeckers

Ornis Norvegica, 2008
Woodpeckers excavate their own nesting holes, have small eggs relative to their body size and many species have small clutches. Based on data from the eight European woodpecker species it was found that the mean thickness of eggshells increases with egg volume, whereas large woodpeckers lay smaller eggs with thinner eggshell relative to their body mass.
Olav Hogstad
openaire   +3 more sources

Optimal dietary vitamin B1 content enhanced egg production, eggshell thickness, and serum antioxidant status in breeder geese. [PDF]

Anim Biosci
Dai L, Wang B, Li Q, Zhang M, Zhang J, Yue B, Kong M, Wang B, Fan W.   +8 more
europepmc   +3 more sources

A Simple Device for Measuring Eggshell Thickness

The Canadian field-naturalist, 1970
Victor Lewin
openaire   +3 more sources

Genetic variation in eggshell crystal size and orientation is large and these traits are correlated with shell thickness and are associated with eggshell matrix protein markers [PDF]

, 2011
The size and orientation of calcium carbonate crystals influence the structure and strength of the eggshells of chickens. In this study, estimates of heritability were found to be high (0.6) for crystal size and moderate (0.3) for crystal orientation ...
Ian Dunn, Alejandro B. Rodríguez‐Navarro, Karina McDade, M. Schmutz, R. Preisinger, D. Waddington, P. W. Wilson, Maureen Bain   +7 more
openalex   +4 more sources

Assessing Differences in the Quality Properties and Ultrastructure of Eggshell as Affected by Chicken Strain and Flock Age During Incubation Period

Brazilian Journal of Poultry Science, 2022
Three hundred hatching eggs from two layer breeder flocks (Hy-Line Brown and hy-Line W-36; 150 each) were obtained at three different periods of laying cycle (early, middle and late stages).
GN Rayan, A Galal, MM Fathi, S Alawaid, W Shehata, AH El-Attar   +5 more
doaj   +1 more source

Dietary supplementation with sodium bicarbonate or sodium sulfate affects eggshell quality by altering ultrastructure and components in laying hens

Animal, 2021
Dietary sodium (Na) levels were related to the content of the eggshell matrix. We therefore speculated that dietary Na supplementation as sodium bicarbonate (NaHCO3) or sodium sulfate (Na2SO4) may improve eggshell quality. Additionally, dietary NaHCO3 or
Y. Fu, H.J. Zhang, S.G. Wu, J.M. Zhou, G.H. Qi, J. Wang   +5 more
doaj   +1 more source

Age-related changes in eggshell physical properties, ultrastructure, calcium metabolism-related serum indices, and gene expression in eggshell gland during eggshell formation in commercial laying ducks

Poultry Science, 2022
: This study evaluated the changes in eggshell mechanical properties, ultrastructure, calcium metabolism-related serum indices, and gene expression in eggshell gland during eggshell formation between laying ducks in the peak (young duck) and late phase ...
Yanan Zhang, Yuanzhong Deng, Yongyan Jin, Shuang Wang, Xuebing Huang, Kaichao Li, Weiguang Xia, Dong Ruan, Shenglin Wang, Wei Chen, Chuntian Zheng   +10 more
doaj   +1 more source

Prediction of Eggshell Ultrastructure via Some Non-destructive and Destructive Measurements in Fayoumi Breed [PDF]

Asian-Australasian Journal of Animal Sciences, 2015
Possibilities of predicting eggshell ultrastructure from direct non-destructive and destructive measurements were examined using 120 Fayoumi eggs collected from the flock at 45 weeks of age.
Lamiaa M. Radwan, A. Galal, A. R. Shemeis   +2 more
doaj   +1 more source

Eggshell Water Vapor Conductance and Shell Structural Characteristics of Broiler Breeder in Different Flock Ages

Journal of Agricultural Sciences, 2020
The aim of the study was to investigate eggshell traits; including eggshell water vapor conductance, eggshell thickness, pore density, egg weight loss as well as eggshell surface area and volume in 28 and 40 week-old broiler breeders.
Ümran Şahan, Saliha Sabah, Arda Sözcü   +2 more
doaj   +1 more source