Chronobiological studies of chicken IgY: Monitoring of infradian, circadian and ultradian rhythms of IgY in blood and yolk of chickens
Autor: | Xiaoying Zhang, Rüdiger Schade, Diraviyam Thirumalai, Jinxin He |
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Rok vydání: | 2014 |
Předmět: |
Activity Cycles
Periodicity medicine.medical_specialty food.ingredient Period (gene) Immunology Immunoglobulins Chick Embryo Biology Avian Proteins Rhythm food Internal medicine Yolk medicine Animals Circadian rhythm Ultradian rhythm Morning General Veterinary Egg Proteins Immunization Passive Circadian Rhythm Endocrinology Infradian rhythm embryonic structures Female Chickens Circaseptan |
Zdroj: | Veterinary Immunology and Immunopathology. 160:266-272 |
ISSN: | 0165-2427 |
Popis: | IgY is the functional equivalent of mammalian IgG found in birds, reptiles and amphibians. Many of its biological aspects have been explored with different approaches. In order to evaluate the rhythmicity of serum and yolk IgY, four chickens were examined and reared under the same conditions. To monitor biological oscillations of IgY in yolk and serum, the eggs and blood samples were collected over a 60 day period and the rhythm of yolk and serum IgY was determined by direct-ELISA. Results indicated that, there is a significant circaseptan rhythm in yolk IgY and circaquattran rhythm in serum IgY. The serum IgY concentration reached a peak in the morning, decreased to a minimum during the daytime and increased again at night revealing a significant circadian rhythm was superimposed by an ultradian rhythm. These data are suited to address the controversies concerning the IgY concentration in egg yolk and blood of laying hens. In addition, this study raised new questions, if the different rhythms in yolk and serum are concerned. |
Databáze: | OpenAIRE |
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