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1. Animal Breeding The science of using the principles of genetics to make improvement in a livestock
species
2. Robert Bakewell "Father of animal breeding"
Leased out males
Mate the 'best of the best'
3. shorthorn cattle First organized breed of livestock 1580
4. Gregor Mendel Father of genetics
Established basic genetic principles
5. population ge- Branch of genetics which deals with the factors that affect the genetic structure of
netics population
6. Dr. Jay lush "Father of Modern Animal Breeding"
Established principle of selection, use of inbreeding, crossbreeding to make hybrid
vigor
7. Primary goal of identify animals with desirable genes and increase the frequency of those genes
animal breeders
8. What is the best Lab-show winner or best retriever
animal? Cattle- cutability/ %muscle or quality grade
Dairy-most milk or best udder, feet, and legs
EVERYONE HAS THEIR OWN OPINION
9. system approach Determining the best animal
10. System Group of interdependent component part
11. animal Characteristics genotype, may be more than one
12. Elements of environment over which humans exert little or no control
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, Ansc 4395 exam 1
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physical environ-
ment
13. fixed resources Size of the farm
Ability to grow supplementary feeds
Available labor
14. Management Policies implemented by the farmer — feeding, healthcare, length of time an
animal is on the farm
15. Economics Costs of farm inputs like feed, labor, and supplies and the prices of farm outputs.
16. Traits Observable or measurable characteristic of an animal
17. Phenotype Observed category or measured level of performance for a trait in an individual
18. environmental ef- Effects that external factors have on animal performance
fects
19. Biological Type a classification for animals with similar genotypes for traits of interest
20. interaction a relationship in which the effect of one factor depends on another factor
21. Genotype by En- A dependent relationship between genotypes and environments in which the
vironment (G x E) difference in performance between two (or more) genotypes changes from en-
Interaction vironment to environment
22. Genetically animals have evolved in that location over many generations and carry the genes
adapted that allow them to survive and thrive in those locations
23. Breeding Objec- a general goal for a breeding program - a notion of what constitutes the best
tive animal
24. Seedstock breeding stock, animals whose role is to be a parent or, in other words, to
contribute genes to the next generation
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