Breeding models

 

Classically the pig industry is based on a breeding pyramid moving genetics from the nucleus farm to the slaughter generation

 

Nucleus farm pure breeds

Landrace

Yorkshire/Large White

Duroc as example

This is a closed herd

 

 

X

Landrace Father

Landrace Mother

Multiplication farm

 

 

X

Large white Father

(possibly via AI)

Landrace Mother

Commercial farm

 

 

 

X

Duroc Father

(possibly via AI)

F1 hybrid Mother

Landrace/Large White cross

Slaughter generation

male and female

Landrace /

Large White /

Duroc Cross

 

Other breeds may be involved as well the Hampshire for example