Animal Science Module 12 Lab Quiz

Replacement laying hens should be managed to reach puberty and begin laying eggs at_____________ of age.

20 weeks

What is the incubation period for chicken eggs?

21 days

What is the incubation period for turkey eggs?

28 days

Which of the following IS NOT one of the four major classes of chickens?

African

Which of the following is concentrated in the southeast and south?

Broiler production

What mineral is especially important in the diets of laying hens?

Calcium

Which of the following IS NOT one of the three American breeds of chickens are important to the U.S. poultry industry?

Coco Maran

Chickens are classified by three things. Which of the following IS NOT one of them?

Color

What English breed of chicken is important to the U.S. broiler industry?

Cornish

Of the following characteristics, which one IS NOT important to commercial egg producers?

Egg number

What problem may result from incubation temperatures that are too high or too low?

Embryonic mortality

Removal of about one-half of the upper portion of the beak and a small portion of the lower beak, increases feather picking and cannibalism. (TorF)

False

What accounts for 60-70% of total costs of poultry production?

Feed costs

What Mediterranean breed of chicken is of major importance to the U.S. poultry industry?

Leghorn

What are the two integral parts of a ventilation system for poultry?

The exhaust fan and air intake arrangement

Whcih of the following IS NOT two critical periods for temperature regulation of hatching eggs?

The middle two weeks

What is the primary purpose of placing litter on the floor of brooder houses?

To absorb moisture

Why is maintaining humidity near 60% important in hatching incubators?

To reduce evaporation during incubation and optimize hatchability

Eggs should always be positioned in an incubator with the large end up or on their sides, but never with the small end up for good hatchability (TorF)

True

Hatchability be greatly reduced if eggs are not turned often enough during incubation because the embryo becomes stuck to the shell membrane. (TorF)

True

It is vital to maintain the carbon dioxide content of incubators at or below 0.5% to maintain good hatchability of eggs. (TorF)

True

The oxygen content of incubators should be maintained at 21%. (TorF)

True

Three factors to carefully considered when planning and managing poultry houses are temperature, moisture, ventilation and insulation. (TorF)

True

Which of the following IS NOT a factor that must be regulated during incubation of poultry eggs for hatching?

Type of bedding