Results 1 to 10 of about 4,798 (170)

Avian eggshell thickness in relation to egg morphometrics, embryonic development, and mercury contamination [PDF]

open access: goldEcology and Evolution, 2020
Eggshell thickness is important for physiological, ecological, and ecotoxicological studies on birds; however, empirical eggshell thickness measurements for many species and regions are limited.
Sarah H. Peterson   +5 more
doaj   +4 more sources

A Nondestructive Eggshell Thickness Measurement Technique Using Terahertz Waves. [PDF]

open access: goldSci Rep, 2020
AbstractEggshells play a number of important roles in the avian and reptile kingdom: protection of internal contents and as a major source of minerals for developing embryos. However, when researching these respective roles, eggshell thickness measurement remains a bottleneck due to the lack of a non-destructive measurement techniques.
Khaliduzzaman A   +5 more
europepmc   +5 more sources

The effect of eggshell thickness on hatchability of quail eggs [PDF]

open access: yesVeterinary World, 2017
Background and Aim: The aim of the successful incubation period is to achieve maximum health chicks in each batch. Therefore, all factors affecting incubation have to be investigated in detail.
Oguz Fatih Ergun, Umut Sami Yamak
doaj   +5 more sources

Use of data mining algorithms in prediction of eggshell thickness from egg quality traits of Potchefstroom Koekoek layers [PDF]

open access: goldScientific Reports
Egg quality is affected by lot of factors. Study was conducted to compare performance of data mining algorithms; Classification and regression tree (CART), Chi-square automatic interaction detection (CHAID), Exhaustive chi-square automatic interaction ...
Kagisho Madikadike Molabe   +2 more
doaj   +4 more sources

The Effect of Eggshell Thickness on Hatching Traits of Partridges [PDF]

open access: goldBrazilian Journal of Poultry Science, 2016
Incubation is an important factor in poultry production, particularly in species with relatively low fertility and hatchability rates. This study examined the effect of eggshell thickness on hatching traits of partridges (A. chukar).
US Yamak, M Sarica, MA Boz, A Ucar
doaj   +5 more sources

Myostatin Mutation in Japanese Quail Increased Egg Size but Reduced Eggshell Thickness and Strength [PDF]

open access: yesAnimals, 2021
Recently developed myostatin (MSTN) mutant quail and chickens demonstrated similar effects of MSTN on muscle and fat developments between avian and mammalian species.
Joonbum Lee   +8 more
doaj   +2 more sources

Factors Influencing Thickness of Eggshell [PDF]

open access: hybridPoultry Science, 1928
Abstract The original work described in this paper was done as part of a project of the Kentucky Agricultural Experiment Station. In producing and handling market eggs, strong shells are desirable. Much of the loss through breakage, both on the farm and in transportation, is due to weak shells.
LEWIS W. TAYLOR, J. HOLMES MARTIN
openaire   +2 more sources

Research Note: Electronic Eggshell Thickness Gauge

open access: hybridPoultry Science, 1988
Abstract An electronic gauge that increases the speed and ease of measuring eggshell thickness is described. The performance of the electronic gauge was compared with that of more conventional methods (visual and mechanical) of thickness measurements.
W.E. FAGAN, D.J. BUCKLEY, C.P.W. TSANG
openaire   +2 more sources

Global diversity and adaptations of avian eggshell thickness indices [PDF]

open access: hybridIbis, 2022
The amniote eggshell is a fundamental aspect of the embryo life‐support system, protecting it from UV light, microbes and mechanical damage, while regulating gas exchange and providing calcium for growth. The thickness of eggshells is highly diverse across modern birds and influences multiple eggshell functions, yet the selective pressures driving ...
Attard, Marie R.G., Portugal, Steven J.
openaire   +5 more sources

Effect of breeder age on eggshell thickness, surface temperature, hatchability and chick weigh [PDF]

open access: goldBrazilian Journal of Poultry Science, 2012
Two experiments were carried out to study the effect of breeder age on incubation parameters (hatchability, eggshell thickness, egg surface temperature and chick weight). In Exp.
A Gualhanone   +3 more
doaj   +2 more sources

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