Poultry Science Professional Exam Questions and
Answers
1. What is the standard incubation period for a chicken egg?
A. 14 days
B. 28 days
C. 21 days
D. 35 days
Correct Answer: C
Expert Explanation: The typical incubation period for Gallus gallus domesticus is 21 days.
2. Which organ in the poultry digestive system is responsible for mechanical grinding of feed?
A. Crop
B. Proventriculus
C. Cecum
D. Gizzard
Correct Answer: D
Expert Explanation: The gizzard, or ventriculus, uses muscular contractions and often grit
to grind food particles.
3. What is the primary source of energy in most commercial US poultry diets?
A. Soybean meal
B. Fish meal
C. Corn
D. Alfalfa meal
Correct Answer: C
Expert Explanation: Corn is the primary energy source due to its high starch content and
availability.
4. Which disease is caused by protozoan parasites of the genus Eimeria?
A. Fowl Pox
B. Marek’s Disease
C. Newcastle Disease
, D. Coccidiosis
Correct Answer: D
Expert Explanation: Coccidiosis is an intestinal disease caused by Eimeria species.
5. Where does fertilization occur in the avian reproductive tract?
A. Infundibulum
B. Magnum
C. Isthmus
D. Uterus
Correct Answer: A
Expert Explanation: The infundibulum is the site of fertilization and the first section of the
oviduct.
6. What is the first-limiting amino acid for poultry fed a corn-soy diet?
A. Lysine
B. Tryptophan
C. Arginine
D. Methionine
Correct Answer: D
Expert Explanation: Methionine is generally the first-limiting amino acid in poultry diets
based on corn and soybean meal.
7. How many hours of light are generally recommended to stimulate egg production in
layers?
A. 8-10 hours
B. 14-16 hours
C. 10-12 hours
D. 20-22 hours
Correct Answer: B
Expert Explanation: A photo-period of 14-16 hours is standard to maintain high egg
production levels.
8. What is the primary function of the crop?
A. Chemical digestion
Answers
1. What is the standard incubation period for a chicken egg?
A. 14 days
B. 28 days
C. 21 days
D. 35 days
Correct Answer: C
Expert Explanation: The typical incubation period for Gallus gallus domesticus is 21 days.
2. Which organ in the poultry digestive system is responsible for mechanical grinding of feed?
A. Crop
B. Proventriculus
C. Cecum
D. Gizzard
Correct Answer: D
Expert Explanation: The gizzard, or ventriculus, uses muscular contractions and often grit
to grind food particles.
3. What is the primary source of energy in most commercial US poultry diets?
A. Soybean meal
B. Fish meal
C. Corn
D. Alfalfa meal
Correct Answer: C
Expert Explanation: Corn is the primary energy source due to its high starch content and
availability.
4. Which disease is caused by protozoan parasites of the genus Eimeria?
A. Fowl Pox
B. Marek’s Disease
C. Newcastle Disease
, D. Coccidiosis
Correct Answer: D
Expert Explanation: Coccidiosis is an intestinal disease caused by Eimeria species.
5. Where does fertilization occur in the avian reproductive tract?
A. Infundibulum
B. Magnum
C. Isthmus
D. Uterus
Correct Answer: A
Expert Explanation: The infundibulum is the site of fertilization and the first section of the
oviduct.
6. What is the first-limiting amino acid for poultry fed a corn-soy diet?
A. Lysine
B. Tryptophan
C. Arginine
D. Methionine
Correct Answer: D
Expert Explanation: Methionine is generally the first-limiting amino acid in poultry diets
based on corn and soybean meal.
7. How many hours of light are generally recommended to stimulate egg production in
layers?
A. 8-10 hours
B. 14-16 hours
C. 10-12 hours
D. 20-22 hours
Correct Answer: B
Expert Explanation: A photo-period of 14-16 hours is standard to maintain high egg
production levels.
8. What is the primary function of the crop?
A. Chemical digestion
