18) Chicken sexing Flashcards

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1
Q

What determines the sex of day-old chicks?

A

Z-linked inheritance

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2
Q

List the ways to sex chickens

A
  • Cloacal protrusion
  • Feather growth
  • Plumage colour/markings
  • Marking: Barred/solid
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3
Q

Cloacal protrusion

A

Female cloaca is much larger

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4
Q

Feather growth

A
  • Slow (dominant) = Female
  • Fast (recessive) = Male
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5
Q

Plumage colour/markings

A
  • Dark = Female
  • Light = Male
  • Criss-cross inheritance = F1 not uniform
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6
Q

Marking = Barred/solid

A

In the Black leghorn…

  • Male = White spot on ​head
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