Animal Science Chapter 1

Which country has the greatest number in cattle?

Brazil

Where does the United States rank in cattle?

3rd

What country has the greatest number in sheep?

China

Which country has the greatest number in goats?

China

Which country has the greatest number of buffalo?

India

Which country has the greatest number of camels?

Chad

Which country has the greatest number of chickens?

China

Where does the Unites States rank in chickens?

3rd

Which country has the greatest number of swine?

China

Where does the United States rank in swine?

2nd

Which country has the greatest number of turkeys?

United States

Which country has the greatest number of ducks?

China

Which country has the greatest number of horses?

United States

Which country has the greatest number of donkeys and mules?

Ethiopia

Consumers in developed nations derive what percent of their calories from animal products and over half of their total protein and fat supply from animal products?

26%

What is the main reason for the increased food production and has allowed the need for less labor on the farms?

Mechanization

50% of people apart of what kind of nations are engaged in agriculture?

Developing nations

7% of people in what kind of countries are active in agriculture?

Developed countries

The increase in productivity of U.S agriculture has lowered the relative of what?

Cost of food

Livestock production has progressively increased since when?

1925

Which economies spend less of their income for food?

Developed

Why is meat important based on scientifically reasons?

The assortment of amino acids in animal protein more closely matches the needs of the human body than does the assortment of amino acids in plant proteins.

Has vitamin B12, may be obtained in adequate quantities from consumption of meat or other animal products but not from plants.

What is one of the largest single sources of food from animals?

Milk

In the U.S, 99% of the milk supply comes from where?

Cattle

What can animals do for the unsuitable agricultural land?

They can convert the vegetation to high-quality protein food for humans

How many acres are used for grazing?

About 385 million

What is required per person for diets high in foods from animals than for diets including only plant products?

More acres of cropland

Why is the amount of energy and protein present in foods from animals smaller than quantities consumed by animals in their feed?

Animals are inefficient in the ration of nutrients used to nutrients produced

What percent of households are considered food secure?

88%

What are some products other than food that ruminants are used for?

Wool, hair, hides, and pelts

Has wool peeked or decreased since 1990?

Decreased

Animal waste from ruminants contains what?

Nitrogen, phosphorus, and potassium

More than half the countries in world used mostly what for work and draft purposes?

Buffalo and cattle

What percent of the world’s human population depends on animals for moving goods?

20%

In developing countries, animals provide what percent of the cultivation power?

52%

Developed countries use what for 82% of the cultivation?

Tractors

1/3 of all U.S households have at least 1 what?

Pet cat or dog

Animals are used in what that provide income for thousands of people and recreational entertainment for millions?

Rodeos, equestrian sports, livestock shows, and other venues

Miniature pigs, swine, and sheep are examples of animals that are used in what?

Human health research

Transgenic technologies have potential to utilize livestock to produce specialized proteins in the use of what?

The creation of therapeutic drugs and other medical applications

Transgenic dairy cows and goats have ben utilized to produce what?

Hepatitis B antigens and clotting agent antithrombin III