Difference between revisions of "Egg Incubation Physiology - Anatomy & Physiology"
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== Changes in Composition of the Egg during Incubation == | == Changes in Composition of the Egg during Incubation == | ||
| − | + | ||
| + | *As the embryo grows within the egg, the composition of the egg changes. | ||
| + | * Both yolk and albumin diminish. | ||
| + | ** Yolk providing energy for growth and maintenance of the embryo. | ||
| + | ** Albumin providing protein for the embryo and giving up water, which is lost through pores in the shell. | ||
| + | * Water is produced when yolk fat is oxidised. | ||
| + | * Water lost from the egg is replaced by air, creating the 'air cell' at the blunt end of the egg. | ||
| + | * Embryo punctures the chrioallantoic and internal shell membrane. | ||
| + | ** Able to begin pulmonary ventilation, rebreathing the 'air cell' gas. | ||
| + | ** Transition from diffusive respiration through the chorioallantois to breathing through the lungs. | ||
== Heat Transfer to the Egg == | == Heat Transfer to the Egg == | ||
Revision as of 11:45, 22 July 2008
Changes in Composition of the Egg during Incubation
- As the embryo grows within the egg, the composition of the egg changes.
- Both yolk and albumin diminish.
- Yolk providing energy for growth and maintenance of the embryo.
- Albumin providing protein for the embryo and giving up water, which is lost through pores in the shell.
- Water is produced when yolk fat is oxidised.
- Water lost from the egg is replaced by air, creating the 'air cell' at the blunt end of the egg.
- Embryo punctures the chrioallantoic and internal shell membrane.
- Able to begin pulmonary ventilation, rebreathing the 'air cell' gas.
- Transition from diffusive respiration through the chorioallantois to breathing through the lungs.