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Lecture 1

ANSC 101 Lecture Notes - Lecture 1: Ruminant


Department
Animal Science
Course Code
ANSC 101
Professor
Kasey Moyes
Lecture
1

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Livestock Numbers Worldwide (most to least)
Chickens
Cattle
Sheep
Swine
Horses
Domestication
Process whereby a population of animals or plants, through a process of selection,
becomes accustomed to human provision and control
Why domesticate?
o Food
o Shelter (clothing/blankets, home)
o Fuel and fertilizer
o Power and transport
o By-products
o Recreation
o Research
Failure to domesticate
o Depending on definition, only 14-24 species have been domesticated
o Zebra domestication attempts have failed: unpredictable/panicky nature
Contribution to Food Needs
Total World Food supply from animals: more fat and protein than calories
Economics
Increased income = increase animal product consumption
Changes in Productivity
Productivity has increased
Amount of income that goes to food is the cheapest in the U.S.
Percent of Population Active in Agriculture
2% in the U.S.
Developing vs. Developed Nations
Mechanization/Technology
o 1900: 1 person plowed 2 acres/day
o Today: 1 person can plow 100 acres/day (more now)
Non-agricultural jobs
o Provision of goods, higher standard of living and diversified economy
Animal productivity is continuously increasing in developed (not developing) countries
Specialization of Farms
1900: many farms had a variety of species
Today: most farms have 1 or 2 species
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