Results 31 to 40 of about 59,744 (316)

Bacterial contamination of table eggs and the influence of housing systems [PDF]

open access: yes, 2008
With the introduction of alternative housing systems for laying hens in the EU, recent research has focussed on the bacterial contamination of table eggs, e.g. eggshell and egg content contamination.
Herman, L.   +5 more
core   +2 more sources

Modelling Eggshell Maculation [PDF]

open access: yesAvian Biology Research, 2015
The eggshells of many avian species are characterised by distinctive patterns of maculation, consisting of speckles, spots, blotches or streaks, the spatial-statistical properties of which vary considerably between (and often within) species. Understanding the mechanisms underlying the production of eggshell maculation would enable us to explore the ...
openaire   +1 more source

Relationship between eggshell thickness and other eggshell measurements in eggs from litter and cages

open access: yesItalian Journal of Animal Science, 2018
The objective of the present study was to determine the relationship between eggshell thickness and other eggshell characteristics in eggs produced in litter housing system and enriched cages.
Mohamed Ketta, Eva Tůmová
doaj   +1 more source

Effect of Uniformity of Eggshell Thickness on Eggshell Quality in Chickens

open access: yesThe Journal of Poultry Science, 2014
Numerous parameters have been proposed to evaluate eggshell quality in order to reduce losses from damaged eggshells. The uniformity of eggshell thickness (UET), as a newly proposed parameter, is defined as the reciprocal of the coefficient of variation
Yi-Yuan Yan   +5 more
doaj   +1 more source

Murray-Darling basin freshwater shells: riverine reservoir effect [PDF]

open access: yes, 2009
We report carbon isotope measurements on pre-bomb museum samples of freshwater mussel shells collected alive from riverine locations in New South Wales, Australia. The calculated reservoir ages, ranging from -60 to +112 years, are much smaller than those
Fink, David   +3 more
core   +5 more sources

The impact of eggshell colour and spot area in Japanese quails: I. eggshell temperature during incubation and hatching results

open access: yesRevista Brasileira de Zootecnia, 2016
This study was carried out to investigate the effects of eggshell colour and spot properties (colour and size of the spot area) on eggshell incubation temperature and hatching outcomes of Japanese quail eggs (Coturnix coturnix japonica).
Sema Alasahan   +3 more
doaj   +1 more source

Characterization of essential eggshell proteins from Aedes aegypti mosquitoes

open access: yesBMC Biology, 2023
Background Up to 40% of the world population live in areas where mosquitoes capable of transmitting the dengue virus, including Aedes aegypti, coexist with humans.
Jun Isoe   +7 more
doaj   +1 more source

Chorioallantoic membrane assay as model for angiogenesis in tissue engineering : focus on stem cells [PDF]

open access: yes, 2020
Tissue engineering aims to structurally and functionally regenerate damaged tissues, which requires the formation of new blood vessels that supply oxygen and nutrients by the process of angiogenesis.
Bronckaers, Annelies   +6 more
core   +3 more sources

Research Note: Changes in eggshell quality and microstructure related to hen age during a production cycle

open access: yesPoultry Science, 2021
: We have studied in detail the changes that occur in eggshell structure and composition during a production cycle in order to better understand the deterioration of eggshell quality with hen age (at 33, 45, and 67 wk).
Cristina Benavides-Reyes   +6 more
doaj   +1 more source

Eggshell appearance does not signal maternal corticosterone exposure in Japanese quail:an experimental study with brown-spotted eggs [PDF]

open access: yes, 2013
Reproduction is a critical period for birds as they have to cope with many stressful events. One consequence of an acute exposure to stress is the release of corticosterone, the avian stress hormone.
Cassey, Phillip   +5 more
core   +8 more sources

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