ANSC 313 Lecture Notes - Lecture 27: Outcrossing, Hutterite, Cousin Marriage
LECTURE 6
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animal breeding scheme!
goal= animal improvement!
"= genetic change!
!
mating system!1.
selection!2.
!
mating systems!
within breed!
outcrossing!•
random mating!•
inbreeding!•
line breeding!•
!
across breeds!
crossbreeding!•
upgrading!•
synthetic production!•
!
Outcrossing!
mate animals NOT related!•
how far back? !•
what the pedigree shows!◦
i.e. 3-5 generations!◦
not "closely" related!•
!
Random breeding!
draw mates at random!•
corral together and let them decide!•
why?!•
to maintain the gene pool as it "was"!◦
zoo animals!◦
are domestic breeds!◦
maintain diversity within their herd!•
!
Inbreeding!
mating of close relatives!•
sire & daughter or grand-daughter!◦
uncle & niece!◦
is used in:!•
purebreds!◦
race horses!‣
show dogs!‣
poultry!◦
to produce lines which are then crossed!‣
!
"line breeding"!
inbreeding!•
