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Thick eggshells of brood parasitic cowbirds protect their eggs and damage host eggs during laying
(Oxford University Press, 2018-07)
Brood parasites lay thick-shelled eggs and numerous hypotheses have been proposed to explain the significance of this trait. We examined whether thick eggshells protect the parasite egg during laying events. We used eggs ...
Combined use of electron and light microscopy techniques reveals false secondary shell units in Megaloolithidae eggshells
(Public Library of Science, 2016-05-04)
Abnormalities in the histo- and ultrastructure of the amniote eggshell are often related to diverse factors, such as ambient stress during egg formation, pathologies altering the physiology of the egg-laying females, or ...
Effect of breeder age on eggshell thickness, surface temperature, hatchability and chick weigh
(Fundação APINCO de Ciência e Tecnologia Avícolas, 2014)
Development of biodegradable and vermicompostable films based on alginate and waste eggshells
(Elsevier, 2023)
The development of biofilms to replace plastics is urgent, due to the high environmental pollution caused by the
non-biodegradable packaging. The objective of this study was to develop and understand the behavior ...
Substitution of limestone for eggshell powder in the diet of Japanese laying quails
(2020-01-01)
Were evaluated the effects of substituting limestone with quail eggshell powder on the zootechnical performance, egg quality, and economic efficiency of Japanese quails during peak egg production (11-20 weeks old). The ...
The first pterosaur 3-D egg: Implications for Pterodaustro guinazui nesting strategies, an Albian filter feeder pterosaur from central Argentina
(China University of Geosciences, 2014-06-07)
The increasing number of fossil eggs of pterosaurs shed light on nesting environments and breeding behaviors of these extinct flying reptiles. Here we report the first partial three-dimensional egg of a pterosaur, Pterodaustro ...
Diferença no tamanho de cascas de ovos de colônias de Panstrongylus megistus
(Universidade de São Paulo (USP), Faculdade de Saúde Pública, 2003-08-01)
O objetivo do estudo foi avaliar as mensurações de cascas de ovos de duas colônias laboratoriais e uma silvestre de P. megistus. de cada uma das colônias, 50 cascas de ovos foram mensuradas por meio de microscópio ...
Diferença no tamanho de cascas de ovos de colônias de Panstrongylus megistus
(Universidade de São Paulo (USP), Faculdade de Saúde Pública, 2003-08-01)
O objetivo do estudo foi avaliar as mensurações de cascas de ovos de duas colônias laboratoriais e uma silvestre de P. megistus. de cada uma das colônias, 50 cascas de ovos foram mensuradas por meio de microscópio ...
Efeito de Diferentes Níveis de Sódio e Fósforo sobre o Desempenho e a Qualidade da Casca dos Ovos de Poedeiras Comerciais
(2000-03-01)
An experiment was carried out to verify the effect of different levels of sodium and phosphorus (P) on the performance, eggshell quality and on some blood constituents of 144 laying hens Hy-Line W36, aged 60 weeks, allotted ...