Post on 21-Jun-2015
Do double-yolked eggs arise when hens are
mated twice per day?
Eggs ≠ BabiesEggs ≠ OvariesFrank is closet beef lover
Hens need a rooster to lay eggsDouble yolked eggs come from roosters
Fact:
Frank loves to eat eggs
Old Wives Tales:
Double Yolked Eggs
Supplied by Gaylene M. FasenkoSupplied by F.E.R.
ChickenReproductive Tract
Supplied by F.E.R.
Shell Gland
Magnum
Isthmus
InfundibulumEgg Art by AlysonAnimation by Jaime
Cloaca
Why are broiler hens prone to laying double yolked eggs?
Feed intake
Photostimulation
“Ideal” Chicken Ovary
Supplied by F.E.R.
Excessive Follicle Development
Supplied by F.E.R.
Ideal Follicle Development
(Ordered Hierarchy)
Supplied by F.E.R.
Excessive Follicle Development
(Double Hierarchy)Supplied by F.E.R.
4 U 2 Consider:
1) Why do we care about double yolked eggs?
2) If you have 1000 double yolked eggs and an incubator will you hatch 2000 chicks?
= ??
Cha Cha Cha!!!
Do double-yolked eggs arise when hens are
mated twice per day?
Eggs ≠ BabiesEggs ≠ OvariesFrank is closet beef lover
Hens need a rooster to lay eggsDouble yolked eggs come from roosters
Fact:
Frank loves to eat eggs
Old Wives Tales:
Double Yolked Eggs
Supplied by Gaylene M. FasenkoSupplied by F.E.R.
ChickenReproductive Tract
Supplied by F.E.R.
Shell Gland
Magnum
Isthmus
InfundibulumEgg Art by AlysonAnimation by Jaime
Cloaca
Why are broiler hens prone to laying double yolked eggs?
Feed intake
Photostimulation
“Ideal” Chicken Ovary
Supplied by F.E.R.
Excessive Follicle Development
Supplied by F.E.R.
Ideal Follicle Development
(Ordered Hierarchy)
Supplied by F.E.R.
Excessive Follicle Development
(Double Hierarchy)Supplied by F.E.R.
4 U 2 Consider:
1) Why do we care about double yolked eggs?
2) If you have 1000 double yolked eggs and an incubator will you hatch 2000 chicks?
= ??
Cha Cha Cha!!!