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1. What is the primary goal of a milk producer sanitation program?
A. Increase milk fat content
B. Reduce bacterial contamination in raw milk
C. Increase herd size
D. Speed up milking time
Answer: B
Rationale: The main purpose of sanitation programs is to
minimize bacterial load and ensure milk safety and quality
before processing.
2. Which condition is commonly associated with high somatic cell
counts in milk?
A. Ketosis
B. Mastitis
C. Milk fever
D. Bloat
Answer: B
Rationale: Mastitis is an udder infection that increases somatic
cell counts in milk.
3. What is the recommended temperature for storing raw milk
immediately after milking?
A. 50°F (10°C)
B. 45°F (7°C)
, C. 40°F (4°C) or lower
D. 60°F (16°C)
Answer: C
Rationale: Milk must be cooled rapidly to 40°F or below to slow
bacterial growth.
4. Which practice helps prevent antibiotic residues in milk?
A. Increasing feed intake
B. Following withdrawal times
C. Adding preservatives
D. Heating milk before storage
Answer: B
Rationale: Withdrawal times ensure antibiotics are cleared from
the animal before milk is sold.
5. What is the primary purpose of pre-dipping teats before milking?
A. Increase milk yield
B. Reduce bacterial contamination
C. Improve milk flavor
D. Stimulate letdown
Answer: B
Rationale: Pre-dipping reduces surface bacteria on teats before
milking.
6. What does a high somatic cell count indicate?
A. Healthy cows
B. Poor milk quality or infection
C. High fat content
D. High lactose levels
Answer: B
Rationale: Elevated somatic cells indicate inflammation or
infection in the udder.
, 7. Which organism is most commonly responsible for mastitis?
A. Yeast
B. Staphylococcus aureus
C. E. coli O157:H7 only
D. Salmonella Typhi
Answer: B
Rationale: Staphylococcus aureus is a common mastitis-causing
bacterium.
8. What is the purpose of post-milking teat dipping?
A. Increase milk volume
B. Prevent new infections
C. Reduce feed costs
D. Improve cow fertility
Answer: B
Rationale: Post-dipping disinfects teats after milking to prevent
bacterial entry.
9. What is the main reason for cleaning milking equipment after
use?
A. Improve milk color
B. Prevent biofilm and bacterial growth
C. Increase milking speed
D. Reduce electricity use
Answer: B
Rationale: Cleaning prevents bacterial buildup and biofilm
formation in equipment.
10. Which factor most directly affects milk bacterial count at the
farm level?
A. Cow breed
B. Milking hygiene practices