18) Chicken sexing Flashcards
1
Q
What determines the sex of day-old chicks?
A
Z-linked inheritance
2
Q
List the ways to sex chickens
A
- Cloacal protrusion
- Feather growth
- Plumage colour/markings
- Marking: Barred/solid
3
Q
Cloacal protrusion
A
Female cloaca is much larger
4
Q
Feather growth
A
- Slow (dominant) = Female
- Fast (recessive) = Male
5
Q
Plumage colour/markings
A
- Dark = Female
- Light = Male
- Criss-cross inheritance = F1 not uniform
6
Q
Marking = Barred/solid
A
In the Black leghorn…
- Male = White spot on head
