Final - Lecture 4 Flashcards
Factors to consider regarding selection
- single trait
- multiple trait
- QTL
- Combinations
- What is the goal?
- Collecting info
- parameters
- select the best, mate the best, repeat
Single trait
one characteristic at a time (e.g. colour in dogs)
Multiple trait
Many characteristics at once (e.g. height, colour, temperament)
- sometimes breeders try to select for too many things and make little progress
What are QTLs useful for?
Quantitative trait locus
- using molecular genetic information (e.g. hip dysplasia)
What temperament is highly heritable?
Aggression
- dachshund
- chihuahua
- jack russel
Breed type is referred to as the?
Breeding goal
Ex. of terriers
Norfolk
Ex. of sporting
Lab
Ex. of herding
border collie
Ex. of working
Husky
Ex. of house
Irish wolfhound
Ex. of toy
yorkie
Ex. of non-sporting
Shih tzu
CKC acknowledged performance
Conformation, obedience, tracking, agility
Non-titled CKC activities
- lure coursing
- retrieval
- herding
- “go to ground”
- pointing
Selecting for conformation often leads to?
Aggression
E.g. Fila Brasileiro
Performance dogs
- law enforcement
- rescue/reconnaissance/recovery
- racing
- agility/demonstration/’tricks’
Is trainability a genetic trait?
Yes
What to consider when breeding a service dog?
- breed type, size, physical characteristics
- behaviour, intelligence, learning ability
- CARAT behaviour assessment
- exploration of novel environment
- exposure to novel stimuli
- reaction to different footing
- reaction to people
Predicting a service dog’s success?
Victoria brought sue to Edmonton riding Andy carrying Fraser
Combine visual persistence + biddability + sociability to other dogs + tolerate people + exploratory + reaction speed + arousal + nice confidence + footing
+/- 4 allows for flexibility
When breeding dogs, what must be considered?
- Breed type and breed performance goals
- performance and service goals
- purebred breeding programs
- breed standards and breeding goals
Breed type and breed performance goals:
- clubs within CKC
- pursue various goals of the breed
- conformation and various combination of obedience, tracking, agility
- most info recorded in pedigree database
Performance and service goals
- skills required for job (specific behaviours, senses, general behaviour)
- conformation soundness (durability, longevity)
- conformation required for job (size, strength, speed, agility, coat type)
Purebred breeding programs
- pedigree
- breeding characteristics, conformation
- within population (purebred = closed population)
- relatively little data (often subjective)
- small populations (individual breeders, geography, club size)
- impassioned selection decision making (interpretation of breed standards, breed homogeneity)
Breeding standards and goals
How do the standards translate into breeding goals?
- subjective vs. objective (all breeders interpret differently)
- range vs. absolute
- descriptive component
