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Dietary Schizochytrium algal powder is an effective strategy to develop docosahexaenoic acid-enriched eggs in Chinese yellow-feathered laying quails. [PDF]
Poult SciQin Z +8 more
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Associations of Candidate Gene Polymorphisms with Egg Production and Egg Quality Traits in Atak-S Laying Hens. [PDF]
Int J Mol SciIlhan F, Aygun A.
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Environmental Pollution, 2015
Although eggshell thinning has been described mainly in the context of environmental pollution, it can also be the effect of reproductive changes induced by a developing embryo. On the basis of a literature survey of 25 bird species (26 published papers) we reviewed data on embryo-induced eggshell thinning (EET) in three groups of birds: precocials ...
Grzegorz Orłowski, Lucyna Halupka
exaly +3 more sources
Although eggshell thinning has been described mainly in the context of environmental pollution, it can also be the effect of reproductive changes induced by a developing embryo. On the basis of a literature survey of 25 bird species (26 published papers) we reviewed data on embryo-induced eggshell thinning (EET) in three groups of birds: precocials ...
Grzegorz Orłowski, Lucyna Halupka
exaly +3 more sources
Comparison of breaking strength and shell thickness as evaluators of eggshell quality
Environmental Toxicology and Chemistry, 1988Abstract The shell quality of eggs produced by northern bobwhite (Colinus virginianus) dosed with sulfanilamide was evaluated by a compression breaking strength test and by the shell thickness measurements that are used in the U.S. Environmental Protection Agency avian reproduction test to determine the effect of a chemical substance on ...
Richard S Bennett, Bill A Williams
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Dieldrin and Eggshell Thickness in Ducks
Nature, 1969CHLORINATED hydrocarbons may cause reproductive failure in several vertebrate species, and their presence seems to be related to the eggshell quality of birds. Raptors in Britain, including the peregrine (Falco peregrinus), sparrow hawk (Accipiter nisus) and golden eagle (Aquila chrysaetos), have reproduced less successfully with the increased use of ...
P N, Lehner, A, Egbert
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WHY PENGUIN EGGSHELLS ARE THICK
The Auk, 2004Abstract Like most other penguin species, Magellanic Penguins (Spheniscus magellanicus) are large-bodied birds that incubate their eggs for a prolonged period on hard substrates with little nesting material—all circumstances that could lead to high rates of egg breakage. However, Magellanic Penguin eggs at Punta Tombo, Argentina are seldom broken. From
P. Dee Boersma +2 more
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