1. Introduction To Animal Agriculture

2. Importance of Domesticated Animals
Animal domestication
Animal/human relationship
What do animals provide?
What do humans provide?

3. Importance of Domesticated Animals
Every country in the world uses domestic livestock as a source of:
Food
by-products used for:
consumer goods and animal feeds
Draft power
Manure for fuel and fertilizer

4. Domesticated Animals

6. Food Selection vs Food Supply
What determines how much animal protein a population consumes?
Animal protein availability is closely related to the economic status of the people and their agricultural technology
This is true:
When discussing countries
When discussing populations within country
Developing regions (SE Asia, Africa, etc) diets are primarily of plant origin

7. Food Selection vs Food Supply
Per capita calorie and protein supply
An index of food availability
Large differences exist between
developed countries
developing countries

11. Trends Related To Percentage of The Population Involved in Agriculture
Countries with a small percentage of their population involved in agriculture:
Farm mechanization allows:
Increased food production
Production of goods and services
Thus increasing the standard of living in the country

12. U.S. Agricultural Production
Agricultural productivity doubled from 1820 to 1920
100 years
1920 to 1950 it doubled again
30 years
it doubled again
15 years
it doubled again
10 years
After World War II
Productivity increased 5 fold in only 30 years
Abundant production of feed grains
Increased livestock production
Lower cost of animal products for the human population

14. U.S. Food Expenditures In the U.S.:
Releasing people from producing their own food has allowed them to increase their per capita income
U.S. consumers allocate a smaller percentage of their disposable income to food than do people in other countries
Has food prices inflated at the same rate as most other goods and services? What does the mean to the US Rancher & Farmer?

17. Importance of Meat as a Food Source
Amino Acid pattern
Amino acids
A, B, C analogy
Scenario 1
100 A, 100 B, 100 C
Scenario 2
100 A, 50 B, 25 C
Pattern of amino acids in meat more closely resembles that of human muscle than does the pattern in plant protein
Vitamin B12

18. Human/Animal Food Competition
World Agricultural land
About 2/3 is pasture or rangeland
60% of this land is not suitable for row cropping
This pasture can be used to grow forages that can be consumed by ruminants
Convert to human usable, high quality protein
US Agricultural land
44% of total land area used for grazing
Only supports 40% of cattle population
Where are the remainder
Could support much more if managed intensively
Ruminants make use of forages that would otherwise be useless to make high quality animal protein for human consumption

20. Human/Animal Food Competition
World Population Continues to Increase
Many are concerned about animal/human food competition
More acres of cropland are required to feed each person when diets high in animal products are consumed
The debate over this issue will only increase
Figure Past, present, and projected world population. Source: U.S. Census Bureau.

22. Increased Efficiency Efficiency What led to the increases
Ability to convert input to product
What led to the increases
Research
Current trends are to decrease government spending on research

23. What Other Contributions Do Animals Make to Society
Products
Wool, mohair, hides, etc.
Synthetics have decreased demand
Animal waste used as fertilizers
$1 billion per year in value
Tallow
Gelatin

24. What Other Contributions Do Animals Make to Society
Draft Power
In developing countries, animals provide virtually all of the power for agriculture
20% of the worlds population depend on animals to move goods
Developing countries
52% of draft power from animals
26% from humans

25. What Other Contributions Do Animals Make to Society
Recreation