Generally good information Kaitlin, although some sections could include more information and detail. Grade = B-

Embryo Development:

Day number
Egg Development
1-3
The nervous system begins to form, eyes, ears, tongue and beak begin to form.
3-6
The body is forming and the heart is fully beating.
6-9
Blood starts to circulate.
9-12
claws begin to appear and feathers.
12-15
The scales, beak and claws are becoming firm. The embryo begins to grow and move.
15-18
The beak turns towards the air cell. The beak breaks the inner shell membrane.
18-21
Yolk sack completely drawn into body cavity, the lungs fully function and the embryo occupy all of the egg except the air cell. The egg is then fully developed.

Embryo_development.GIF

Egg Fertilisation:

The egg becomes fertilized in the infundibulum if sperm is present. It takes about 30 minutes for a hen to lay an egg.


hen_laying_egg.jpg

Incubation:


Eggs need to stay warm before they are born. And without a mother Hen, Incubators can be used as a substitute. They are set to a certain temperature so that the eggs stay warm.
There must be water in the incubator and the temperature should be around 37-39 degrees.
external image inc5.jpg

Preparing Eggs for Sale:

receival-Refridgerated trucks deliever eggs from the egg farms to grading floors for quality testing, grading and packaging. The eggs are taken from the grading floor to large temperature controlled rooms to keep the eggs fresh. They are then placed on the conveyor belt and washed.
Re-oiling-The cleaning proccess removes the natural oils on the egg shell that help keep eggs fresh. The re-oiling station is where a micro-fine mist of oil re-coats the clean egg.
Quality testing-Eggs are tested for egg white height, yolk colour and shell thickness.
Candling-The eggs which remain on the conveyor belt are passed over a strong light to see inside the egg and look for defects.
Stamping: Some grading floors stamp their eggs with a unique code.
Grading: Eggs are weighed and sorted into different sizes and packed.
candling.jpg
re_oiling.jpg
processing.jpg

Layer Chicken Breeds:

White Leghorn

produces white eggs

external image 2a3a08d0.jpg

Australorp

Eggs are creamy to brown in colour
external image black-australorp.gif

Rhode Island Red

Lays brown eggs
external image Rhode_Island_Red.jpg

Chicken Parasites

Lice:
Lice are paricites they live off of skin.
symotms: pluck own feathers
treatment: specialist lice powder

external image body-lice-louse.jpg




Mites:
Mites are parasites that feed on your chicken’s blood
symtoms:
hens to abandon their nests and pluck out their own feathers. Other symptoms include weight lose, lower egg yield and visible mites on the skin or around the vent.
treatment:
treatment: specialist red mite power, clean and disenfect the chicken coop.

external image Chicken-mite-skin-lesions-300x240.jpg