Results 71 to 80 of about 3,425 (196)

Assessing arboreal adaptations of bird antecedents: testing the ecological setting of the origin of the avian flight stroke. [PDF]

PLoS ONE, 2011
The origin of avian flight is a classic macroevolutionary transition with research spanning over a century. Two competing models explaining this locomotory transition have been discussed for decades: ground up versus trees down. Although it is impossible
T Alexander Dececchi, Hans C E Larsson
doaj   +1 more source

The Effect of Dietary Energy and Protein Levels on Production in Breeding Female Ostriches. [PDF]

, 2003
1. In a study spanning two breeding seasons, we assessed the effect of different dietary energy and protein levels on body mass, body condition, and egg production of female ostriches. 2.
Brand, T.S., Brand, Z., Brown, Chris
core   +2 more sources

The Effect of Chitosan Edible Coating Containing Nanoemulsion of Eryngium campestre Essential Oil on the Quality of Ostrich Meat During Storage in Refrigerator

Food Science &Nutrition, Volume 13, Issue 5, May 2025.
Ostrich meat samples coated with chitosan containing nanoemulsion of Eryngium campestre essential oil had lower free fatty acid, peroxide value, and total volatile bases and also lower microbial count. Chitosan coatings incorporated with 2.5% and 5% nanoemulsion of Eryngium campestre essential oil decreased the drip loss and increased the texture ...
Faegheh RoshanNejad Moadab, Maryam Azizkhani   +1 more
wiley   +1 more source

A new marker based on the avian spindlin gene that is able to sex most birds, including species problematic to sex with CHD markers [PDF]

, 2016
We have developed a new marker (Z43B) that can be successfully used to identify the sex of most birds (69%), including species difficult or impossible to sex with other markers. We utilized the zebra finch Taeniopygia guttata EST microsatellite sequence (
Casey, Dawson, Dawson, Dawson, de Kloet, Deborah A. Dawson, Gavin J. Horsburgh, Griffiths, Itoh, Jensen, Kenta, Kocijan, Kumar, Lifjeld, Natalie dos Remedios, Nicholls, Reddy, Replogle, Richardson, Robertson, Rozen, Sacchin, Toouli, Vucicevic   +23 more
core   +1 more source

Biomechanical modeling of musculoskeletal function related to the terrestrial locomotion of Riojasuchus tenuisceps (Archosauria: Ornithosuchidae)

The Anatomical Record, Volume 308, Issue 2, Page 369-393, February 2025.
Abstract Riojasuchus tenuisceps was a pseudosuchian archosaur from the Late Triassic period in Argentina. Like other ornithosuchids, it had unusual morphology such as a unique “crocodile‐reversed” ankle joint, a lesser trochanter as in dinosaurs and a few other archosaurs, robust vertebrae, and somewhat shortened, gracile forelimbs.
M. Belen von Baczko, Juned Zariwala, Sarah Elizabeth Ballentine, Julia B. Desojo, John R. Hutchinson   +4 more
wiley   +1 more source

A new, major C27 biliary bile acid in the Red-winged tinamou (Rhynchotus rufescens):(25R)-1β,3α,7α-trihydroxy-5β-cholestan-27-oic acid*

Journal of Lipid Research, 2009
The chemical structures of the three major bile acids present in the gallbladder bile of the Red-winged tinamou (Rhynchotus rufescens), an early evolving, ground-living bird related to ratites, were determined.
Lee R. Hagey, Genta Kakiyama, Akina Muto, Takashi Iida, Kumiko Mushiake, Takaaki Goto, Nariyasu Mano, Junichi Goto, Cleida A. Oliveira, Alan F. Hofmann   +9 more
doaj   +1 more source

Suitability of emu (Dromaius novaehollandiae) eggs for in ovo imaging research as an alternative to conventional animal model: First experience and non‐invasive investigation of physiological embryonal development on computed tomography

Acta Zoologica, Volume 106, Issue 1, Page 55-64, January 2025.
Abstract Fertilized bird eggs are an alternative model to conventional animal testing. In recent studies, a preclinical imaging model based on large ostrich eggs was introduced in a clinical research centre using imaging systems designed for humans, thus bypassing the need for dedicated small animal imaging systems.
Olga Perkas, Marta Pomraenke, Julia Greiser, Veronika Porwoll, Steffen Wiegand, Christian Kuehnel, Thomas Winkens, Martin Freesmeyer   +7 more
wiley   +1 more source

Molecular sex identification in birds of prey [PDF]

, 2015
[Resumen] La correcta identificación del sexo de los animales es de vital importancia para la gestión y conservación de la fauna. En el caso de las aves, el sexado a partir de rasgos fenotípicos resulta complicado o imposible en numerosas ocasiones ...
Caeiro Aguado, Manuel
core  

Circulating miRNAome of avian influenza‐infected ruddy turnstones Arenaria interpres

Journal of Avian Biology, Volume 2025, Issue 1, January 2025.
MicroRNAs (miRNAs) are highly conserved small noncoding RNAs that regulate gene expression post‐transcriptionally. Circulating miRNAs – miRNAs that have been released from cells and circulate in the bloodstream – are relatively stable and interesting molecules for wildlife research, where they may form a proxy for gene expression as a function of the ...
Anne‐Fleur Brand, Courtney A. Waugh, Jorge M. O. Fernandes, Marcel Klaassen, Michelle Wille, Veerle L. B. Jaspers, Rune Andreassen   +6 more
wiley   +1 more source

FACTORS AFFECTING PRODUCTION EFFICIENCY IN A NEW ALTERNATIVE ENTERPRISE: THE CASE OF THE RATITE INDUSTRY [PDF]

Technical efficiency measures are calculated for ratite producers using data envelopment analysis. Regression analysis is then used to determine producer characteristics that are likely to lead to higher technical efficiencies.
Gillespie, Jeffrey M., Schupp, Alvin R., Taylor, Gary   +2 more
core   +1 more source