Results 41 to 50 of about 13,650 (237)

Eggshell thickness in American shorebirds before and since DDT

The Canadian field-naturalist, 1979
Michael L. Morrison, Lloyd F. Kiff
openaire   +3 more sources

Nesting behaviour influences species-specific gas exchange across avian eggshells [PDF]

, 2014
Carefully controlled gas exchange across the eggshell is essential for the development of the avian embryo. Water vapour conductance (GH2O) across the shell, typically measured as mass loss during incubation, has been demonstrated to optimally ensure the
Adelaide, Cassey, P, Grim, T, Hauber, M E, Maurer, G, New York, Palacky Uni, Portugal, S J, Sheffield, Thomas, G H   +9 more
core   +4 more sources

Assembly of the Inner Perivitelline Layer, a Homo log of the Mammalian Zona Pellucida: An Immunohistochemical and Ultrastructural Study [PDF]

, 2012
The avian inner perivitelline layer (IPVL), a homologous structure to the mammalian zona pellucida, is deposited between the granulosa cells and the oocyte cell membrane during folliculogenesis. The glycoprotein meshwork of the IPVL forms a 3-dimensional
Bausek N., Bramwell R.K., Callebaut I., Daniela Rodler, Dunbar B.S., Epifano O., Fred Sinowatz, Goudet G., Jovine L., Jovine L., King A.S., Kinoshita M., Lefievre L., Litscher E.S., Menkhorst E., Mori M., Mugnier S., Pan J., Rahman M.A., Rahman M.A., Richardson K.C., Sasanami T., Sasanami T., Sasanami T., Sasanami T., Sato T., Sinowatz F., Smith J., Spargo S.C., Stewart S.G., Takeuchi Y., Tomohiro Sasanami, Waclawek M., Wassarman P.M., Wassarman P.M., Wassarman P.M., Wyburn G.M., Wyburn G.M.   +37 more
core   +1 more source

Eggshell structure, measurements, and quality-affecting factors in laying hens: a review

Czech Journal of Animal Science, 2016
Eggshell quality is one of the most significant factors affecting poultry industry; it economically influences egg production and hatchability. Eggshell consists of shell membranes and the true shell that includes mammillary layer, palisade layer, and ...
M. Ketta, E. Tůmová
doaj   +1 more source

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

Poultry 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, Elisa Folegatti, Nazaret Dominguez-Gasca, Gilberto Litta, Estefania Sanchez-Rodriguez, Alejandro B. Rodriguez-Navarro, Murtala Umar Faruk   +6 more
doaj   +1 more source

A review of the relationship between eggshell colour and water vapour conductance [PDF]

, 2011
This review brings together the available literature that examines the effect of variations in pigmentation on the gas conductance of avian eggshells. Pheasant and Houbara bustard eggs provide some evidence that shell abnormalities can impact upon colour
Baggott G.K., Baggott G.K., Briggs D.M., Burton F.G., D. Charles Deeming, Deeming D.C., Fraser A.C., French N.A., Higham J.P., Rahn H., Richards P.D.G., Richards P.D.G., Solomon S.E., Swart D., Tullett S.G.   +14 more
core   +1 more source

DDE and eggshell thickness in Alberta common terns

, 1989
Bruce Switzer
openaire   +2 more sources

Eggshell thickness and egg morphometrics in five songbird species from the Central Valley, California

Journal of Field Ornithology
Avian eggshell thickness is an important life history metric in birds and has broad applications across disciplines ranging from animal behavior to toxicology.
Carley R. Schacter, Sarah H. Peterson, C. Alex Hartman, Mark P. Herzog, Joshua T. Ackerman   +4 more
doaj   +1 more source

The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure

Poultry Science, 2021
: This study investigated the effects of dietary chloride (Cl) reduction on laying performance and eggshell quality by substitution of sodium bicarbonate (NaHCO3) or sodium sulfate (Na2SO4) for part of dietary sodium chloride (NaCl), and further explored
Yu Fu, Jing Wang, Hai-jun Zhang, Shu-geng Wu, Jian-min Zhou, Guang-hai Qi   +5 more
doaj   +1 more source

Relationship between Bone Quality, Egg Production and Eggshell Quality in Laying Hens at the End of an Extended Production Cycle (105 Weeks)

Animals, 2021
(1) Background: Nowadays the industry aims to improve lay persistency for extended cycles (100 weeks or longer) to make egg production more sustainable.
Clara Alfonso-Carrillo, Cristina Benavides-Reyes, Jon de los Mozos, Nazaret Dominguez-Gasca, Estefanía Sanchez-Rodríguez, Ana Isabel Garcia-Ruiz, Alejandro B. Rodriguez-Navarro   +6 more
doaj   +1 more source