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Physical quality of different industrial versus non-industrial eggs obtained from groceries and markets in southern Chile
(Faculty of Veterinary Sciences - Universidad Austral de Chile, 2023)
Yolk corticosterone and progesterone levels in Greater Rhea (Rhea americana) eggs vary in a changing social environment
(Wiley, 2022-07)
Maternal hormones in avian egg yolks may signal and prepare offspring for the prevailing conditions. However, this adjustment requires some degree of flexibility in regulating yolk hormone deposition. The Greater Rhea (Rhea ...
Physical and chemical characteristics of fertile and infertile eggs of wild Caiman latirostris
(Elsevier Science, 2018-12-01)
In oviparous species, physico-chemical characteristics of eggs are an indicator of maternal physiological traits and environmental conditions of the site where the females develop. In this study, we aim to (a) determine ...
Determination of residual enrofloxacin in eggs due to long term administration to laying hens: Analysis of the consumer exposure assessment to egg derivatives
(Elsevier, 2021-07)
The use of the antibiotic enrofloxacin (ENR) in poultry is controversial. A high-performance liquid chromatography coupled to fast-scanning fluorescence detection (HPLC-FSFD) method for the determination of ENR in egg ...
Distribution and concentration of maternal progesterone in the yolk of Greater Rhea eggs (Rhea americana)
(John Wiley & Sons Ltd, 2017-04)
Progesterone is the most concentrated maternal yolk steroid characterized to date in birds; however, no information about it is available in ratite eggs. We collected freshly laid eggs from zoo-housed Greater Rhea females ...
Effect of maternal environment on yolk immunoreactive corticosterone and its influence on adrenocortical and behavioral activity in chicks of Greater Rhea (Rhea americana)
(Elsevier, 2019-08)
Maternal corticosterone in avian eggs may modify offspring phenotype in order to increase survival in poor environments. In the Greater Rhea (Rhea americana), we previously found that yolk immunoreactive corticosterone is ...
A simple and economic three-step process for producing highly purified Fab’ fragments directly from the egg yolk water-soluble fraction
(Elsevier, 2022-11)
Although mammals are still the main source of polyclonal antibodies production, the use of egg yolk immunoglobulins (IgY) is increasing, and thus improvement of its safety to reduce undesired reactions is needed. Removal ...
Relación yema: albumen en huevos de tres genotipos de gallinas ponedoras destinadas a sistemas semi intensivos
(Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, 2022-08-06)
Se estudió el comportamiento dinámico de la relación yema:albumen en huevos del cruzamiento de tres vías Campero Casilda en comparación con Negra INTA y Rhode Island Red. Se trabajó con muestras aleatorias de 15 huevos de ...
Parental investment in eggs and its effect on nestling growth and survival in Magellanic Penguins
(Csiro Publishing, 2014)
Life-history variables evolve in response to cost-benefit trade-offs. For birds, larger eggs are thought to be beneficial for development of offspring but are energetically costly to produce. Further, egg-size dimorphism ...