Crossbreeding Systems notes
Crossbreeding Systems are required to.
sustain acceptable levels of hybrid vigor and complementarity over time
Crossbreeding Systems are utilized by.
mostly in commercial animal production
Seedstocks for crossbreeding systems
Random and Assortative Mating
What is the difference between random mating and random selection?
random mating occurs after animals have been selected to become parents
Assortative mating requires.
performance records, genetic predictions, etc.
what is po
Chapter 17 Notes
Inbreeding definition & example
the mating of animals that are more closely related than the population that
they came from
ex.) self fertilization
Inbreeding results in
genotypes in the offspring that are more homozygou
Multiple Trait Selection
Three main categories of multiple trait selection
Independent Culling levels
Economic Selection Indexes
Selection first for one trait and then another
-often uses selection target
Industry in the 2000s includes
-greater consolidation of production systems
-vertical integration and coordination
-lower profit margins
-consumer driven industry
-emphasis on lean
-emphasis on meat and and eating quality
-supply of genetics d
Focus of quantitative genetics is.
What is a parameter? example?
summary numbers that describe whole population
generally their value can't be known
ex.) mu (population mean)
What is a statistic?
summary numbers calcul
Final Exam Study Guide
facilities and integration within the swine industry impact.
what kind of production system is used for swine?
all in/all out production
What are the 2 types of seedstock companies of the swine industry?
Model Population for Hybrid Vigor
-initial large randomly bred population (base population)
What happens to idealized population?
-split into lines or breeds
-lines differentiate in allele and genot
What Dogs Tell Us
4 broad categories
1. wolf like
4. mastiff like
What mating strategies have been used to create the diversity of dog
Complementarity, Negative Assortative Mating, Positive Assortative Mating
You can map.
Marker Assisted Selection provides opportunity to enhance response to
selection, particularly in.
traits with low heritability
phenotypes that are difficult to measure (behavior), expensive to obtain
(disease resistance), or are late ons