ANSC 313 Lecture Notes - Lecture 15: Backcrossing, Freemartin, Ovulation
LECTURE 21
FINAL!
75% from selection onwards!
25% for module 1 & module 2 "theory"!
KNOW INBREEDING FORMULA!
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alternative livestock!
laws are under the agriculture act- provinces vary!•
non- traditional livestock!•
wild boar!◦
bison!◦
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wild boar ranching!
not very common in saskatchewan !•
can escape very easily!•
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wild boar hybrids!
phenotype does not always predict if hybrid!•
domestic pigs- 38 chromosomes!◦
european wild boar- 36 or 38 chromosomes!◦
i.e. subspecies!‣
wild boar cane be hybrids!•
hybrids are fertile !◦
F1 hybrids and backcrosses are considered fertile!•
phenotype does not necessarily predict if a hybrids!•
even some wild boars in zoos are hybrids!•
many wild boars imported to north america from Australia are hybrids !•
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E+ allele was present in all wild boars!
there fore any wild boar that is NOT E+ /E+ is not a purebred !
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Bison!
indigenous to north america!•
wood and plains buffalo are subspecies- fertile hybrids!•
population in canada are not wild!•
all in parks, ranches, hunting reserves !◦
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products!
breeding stock!•
meat !•
skulls!•
hides!•
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bison- cattle hybrids!
cattle and bison interbreed but male hybrids are sterile!•
bison bulls can cause abortion in domestic cattle herds!•
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Water buffalo!
