sheep Flashcards
what are the two meat breeds from England
suffolk and dorset
what are the canadian breeds and what do they produced
finnish landrace - lambing
suffolk - meat
east friesian - milk
dorset leicster suffolk - good meat and good lambing
what kind of trait are horns
sex influenced
HH male and female horned
Hh male horned, female scurred
hh female polled and males scurred or polled
what was the type of wool that was considered fine and high in trade
merino
what are single gene inheriters
wool colour
spider syndrome
FGFR3 mutation
what is a good indicator of fertility in males
testical size
what is the booroola fecundity gene?
average litter size of 4 lambs
incomplete dominant
mapped to chromosome 6
gene identified : BMP1B
which mating system is more favoured? why?
crossbreeding over inbreeding becasue fertility asn weight increases
what is critical in behaviour genetics
temperment
what is the differents between learned and innate behaviour
learned - multifactorial inheritance
innate - single gene inheritance
what type of behaviour is maternal?
innate behaviour
recognition of young
care of young
what jobs to dogs generally have
hunting guarding herding pulling sleeds and carts war and fishing
what do you select for in dogs?
temperment, trainability, intelligence and stamina
what are single gene traits dogs often have
loud trailing, dish carrying wrist bite greeting and barking
what week is neurological development complete
week 7
what week should socail strata development start
week 10
what do you test for in puppy aptitude testing
excitability (response to stimuli)
active and passive defense (biting freezing)
guard and herd dogs
dominant and submissice (leader follower) - herding and hunting dog
independence and social interaction
sound sensitive
touch sensative
what is the rule of thumb in breeding stock selection
the earlier the trait can be determined, the less likely the gene component has been altered by the environment
