CPT CPT Flock Management & Production Systems 2 — Questions and Answers
Question 1: Which ventilation system uses positive pressure fans to push fresh air into the poultry house?
- Tunnel ventilation
- Cross ventilation
- Positive pressure ventilation (Correct answer)
- Minimum ventilation
Correct answer: Positive pressure ventilation
Positive pressure systems use fans to force fresh air into the building, while negative pressure systems draw air out to create inflow through inlets.
Question 2: What does FCR (Feed Conversion Ratio) measure in poultry production?
- Feed cost per bird
- Pounds of feed consumed per pound of live weight gained (Correct answer)
- Percentage of feed wasted
- Number of feedings per day
Correct answer: Pounds of feed consumed per pound of live weight gained
FCR is calculated by dividing total feed consumed by total weight gained, with lower values indicating better feed efficiency.
Question 3: Which disease is caused by Marek's disease virus (MDV) and is a major concern for commercial poultry producers?
- Lymphoma and nerve paralysis (Correct answer)
- Respiratory distress only
- Egg production drop
- Feed refusal
Correct answer: Lymphoma and nerve paralysis
Marek's disease causes T-cell lymphomas and peripheral nerve demyelination, leading to paralysis and is prevented through day-of-hatch vaccination.
Question 4: What is the recommended relative humidity range inside a broiler house during the grow-out period?
- 20-30%
- 50-70% (Correct answer)
- 80-90%
- 10-20%
Correct answer: 50-70%
Relative humidity between 50-70% helps maintain proper litter condition and bird respiratory health while preventing excessive dryness or dampness.
Question 5: In layer hen production, what term describes the intentional cessation of egg laying followed by re-stimulation to begin a new laying cycle?
- Forced molt (Correct answer)
- Culling
- Beak trimming
- Depopulation
Correct answer: Forced molt
Forced molting is induced through feed withdrawal or dietary manipulation to reset the reproductive cycle and extend a flock's productive life.
Question 6: What is the typical market age of a commercial broiler raised in the US?
- 6-8 weeks (Correct answer)
- 12-14 weeks
- 16-18 weeks
- 20-24 weeks
Correct answer: 6-8 weeks
Modern commercial broilers reach market weight of 5-8 lbs in approximately 6-8 weeks due to genetic selection and optimized nutrition.
CPT CPT Flock Management & Production Systems 2
Which ventilation system uses positive pressure fans to push fresh air into the poultry house?