Characterization of mineral dynamics related with osteogenesis during chick development
2007
Fujita, Y.(Tokyo Univ. of Agriculture, Abashiri, Hokkaido (Japan). Faculty of Bio-Industry) | Takahashi, S. | Miyata, T. | Hashizume, R. | Ito, M.
It is thought that avian embryo rely on eggshell as the source of minerals, mainly calcium, which is necessary for development. However, the mineral dynamics except calcium during chick development is not clarified. In this study, we measured the mineral content of eggshell, yolk, albumen and embryo to characterize the mineral dynamics during chick development in white leghorn. The concentration of calcium, phosphorus, magnesium and strontium in these samples were measured with an inductively coupled plasma emission using a sequential plasma spectrometer. The concentration of minerals including calcium in yolk gradually decreased and then increased again. We speculate that minerals in yolk consumed in early development were supplemented from eggshell to embryo for forthcoming hatching. The dynamics of calcium agreed with previous reports. About 80% of magnesium as well as calcium were supplied from eggshell. On the contrary, 70% of phosphorus was supplied from yolk. Yolk might be the most important source of phosphorus that is necessary for chick development.
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