Results 101 to 110 of about 622,603 (389)

Dental development in the tropical gar (Atractosteus tropicus) and the evolution of vertebrate dentitions

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Dentitions have diversified enormously during vertebrate evolution, involving reductions, modifications, or allocations to prey seizing and processing regions. A combination of ancient and novel features related to dental and oropharyngeal apparatuses is found in extant lineages of non‐teleost fishes, such as the gars.
Anna Pospisilova   +4 more
wiley   +1 more source

Effect of Storage on the Antioxidant Activity of Yolk Lipid for Some Kinds of Eggs

open access: yesMaǧallaẗ al-baṣraẗ al-ʻulūm al-zirāʻiyyaẗ, 2018
The current study included estimating the antioxidant activity of yolk lipid for the quail egg, Coturnix japonica (quail), Gallus gallus L. (hen), Anas Platyrhynchos L. (duck) and Gygnus cygnus L.(goose).
Sara H.M. Shareef   +1 more
doaj   +1 more source

The Effect of Modified Eggs and an Egg-Yolk Based Beverage on Serum Lutein and Zeaxanthin Concentrations and Macular Pigment Optical Density: Results from a Randomized Trial

open access: yesPLoS ONE, 2014
Increasing evidence suggests a beneficial effect of lutein and zeaxanthin on the progression of age-related macular degeneration. The aim of this study was to investigate the effect of lutein or zeaxanthin enriched eggs or a lutein enriched egg-yolk ...
Elton R. Kelly   +4 more
semanticscholar   +1 more source

Development of a Zebrafish Embryo‐Based Test System for Thyroid Hormone System Disruption: 3Rs in Ecotoxicological Research

open access: yesEnvironmental Toxicology and Chemistry, EarlyView.
Abstract There is increasing concern regarding pollutants disrupting the vertebrate thyroid hormone (TH) system, which is crucial for development. Thus, identification of TH system–disrupting chemicals (THSDCs) is an important requirement in the Organisation for Economic Co‐operation and Development (OECD) testing framework.
Lisa Gölz   +9 more
wiley   +1 more source

Observations on the physiological development of trout eggs [Translation from: Roux. Arch. f. Entwicklungsmechanik der Organismen, 114. 771, 1929] [PDF]

open access: yes, 1929
The osmotic pressure of the perivitelline fluid and the yolk of trout (Salmo trutta) eggs were measured separately by the Drucker-Schrein method. The permeability of the egg membrane and the variations in the osmotic pressure of the eggs when placed in ...
Svetlov, P.
core  

Alternations in Cholesterol and Fatty Acids Composition in Egg Yolk of Rhode Island Red x Fyoumi Hens Fed with Hemp Seeds (Cannabis sativa L.)

open access: yes, 2015
The present study was designed to evaluate the influence of hemp seed (HS) supplementation on egg yolk cholesterol and fatty acid composition in laying hens.
Suhaib Shahid   +4 more
semanticscholar   +1 more source

Inconsistent Transcriptomic Responses to Hexabromocyclododecane in Japanese Quail: A Comparative Analysis of Results From Four Different Study Designs

open access: yesEnvironmental Toxicology and Chemistry, EarlyView.
Abstract Efforts to use transcriptomics for toxicity testing have classically relied on the assumption that chemicals consistently produce characteristic transcriptomic signatures that are reflective of their mechanism of action. However, the degree to which transcriptomic responses are conserved across different test methodologies has seldom been ...
Paul Béziers   +10 more
wiley   +1 more source

Chemical Composition of the Eggs of the Freshwater Turtle Phrynops hilarii (Chelidae: Testudines) [PDF]

open access: yes, 2019
At oviposition, amniote eggs contain all the nutrients required for complete neonate tissue development. For reptiles and birds, the egg yolk is the main embryonic energy source and is composed predominantly of proteins and lipids, while also providing ...
Bernardi, Cecilia Gabriela   +3 more
core  

The Egg Yolk Surface in Fresh Eggs

open access: yesPoultry Science, 1936
Abstract YOLK index is used experimentally to a considerable extent as a measure of the interior quality or past history of eggs since it appears to be more sensitive and shifts earlier during deterioration than the percentage of firm white. However yolk indexes do not evaluate the nature of the surface of the yolk—a surface that is important to the ...
J. A. Davidson   +2 more
openaire   +2 more sources

Insects as Food and Feed Source: A Comprehensive Review on Nutritional Value, Food Safety Concern, Environmental Benefits, Economic Potential, Technological Innovations, Challenges, and Future Prospects

open access: yesFood Frontiers, EarlyView.
Edible insects offer a sustainable protein source, requiring fewer resources than traditional livestock. Despite challenges, they have the potential to enhance food security and sustainability for a growing global population. ABSTRACT As the world faces an escalating protein crisis amid climate change, population growth, and resource scarcity, edible ...
Anil Gautam   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy