ANSC 313 Lecture Notes - Lecture 4: Congenital Disorder, Preventive Healthcare, Genetic Counseling
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Genetics or animal breeding!
preventive medicine!•
Cull decisions (note cull doesn't mean kill)!◦
Not enter the breeding program but grown for meat or other reasons instead before ‣
killed!
Just not bred !‣
Few genetic diseases are treatable !◦
selective breeding!•
Breed best to best!◦
Improve growth, performance, etc.!◦
This is different through out the world/ culture!◦
Best isn't always defined the same!◦
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majority of clients seeking genetic advice will be purebred breeders!
Their primary product is "genes"!
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Reputation of those clients is based on the genetics of their stock!
Confidentiality is critical!
%- can't talk about what you learn when your a professional from ranch to ranch!
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-clients seek genetic counselling!
Advice should be non-directive or at least not dictatorial!
Avoid- this dog should not be bred!
Instead- this condition is inherited as autosomal recessive!
There is a DNA test to detect carriers of this condition!
%explain in depth there options!
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Genetics!
=/= congenital (present at birth)!•
= inherited !•
~ familial !•
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Incidence of congenital defect!
About 6% of human carry a minor defect ( braces, clubbed feet)!•
Only 2% in a major defect in human ( missing a leg, heart defect that can't be corrected)!•
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Patterns of inheritance !
Single gene ( Mendelian)!•
Chromosomal!•
Multifactorial!•
Teratogenic !•
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Family history - to help determine defect?!
Age of parents!•
Number of previous offspring ( normal &abnormal)!•
Sex of all affecteds!•
Number of miscarriages & stillbirths!•
Breed!•
Certain genetic things that are common in some breeds but not others!◦
Document Summary
Not enter the breeding program but grown for meat or other reasons instead before killed. This is di erent through out the world/ culture. Best isn"t always de ned the same majority of clients seeking genetic advice will be purebred breeders. Reputation of those clients is based on the genetics of their stock. Can"t talk about what you learn when your a professional from ranch to ranch. Advice should be non-directive or at least not dictatorial. Instead- this condition is inherited as autosomal recessive. There is a dna test to detect carriers of this condition explain in depth there options. About 6% of human carry a minor defect ( braces, clubbed feet) Only 2% in a major defect in human ( missing a leg, heart defect that can"t be corrected) Certain genetic things that are common in some breeds but not others. Many are the result of a new mutation. But some are missing only some tail vertebrae.
