Crossbreeding
11 important questions on Crossbreeding
What is the equation for heterosis?
What can be motivation for crossbreeding?
- To benefit from direct and maternal heterosis
- To exploit the complementairty of breeds or lines: combinatin of the charasteristics of two breeds or lines is favourable
- Crossbreds combine characterstics that cannot easily be improved simultaneously in a breed
- Protection of the genetic improvement in the selection lines of commercial companies
What is direct heterosis?
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What is maternal heterosis?
What are the several crossbreeding systems?
- Three-way cross
- Four- way crossess
- Two-way rotation (crisscross)
- Three-way rotation (crisscross)
- Introgression
- Grading-up
- Creating synthetic breed
What is the three-way cross?
What is the four-way crosses?
What is two-way rotation (crisscross)?
What is three-way rotation (crisscross)?
What is creating a synthetic breed?
When is full heterosis obtained?
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