Testing to fulfill HACCP (Hazard Analysis Critical Control Points) requirements: principles and examples

Area of Science:

• Dairy Science
• Food Safety
• Veterinary Diagnostics

Background:

• Effective on-farm Hazard Analysis Critical Control Points (HACCP) monitoring requires reliable tests for cows, milk, and the dairy environment.
• Tests must be field-validated to establish limitations for appropriate screening and interpretation of results.
• High specificity is crucial for low-prevalence infections and residues to minimize false positives and industry costs.

Purpose of the Study:

• To highlight the need for cost-effective, accurate, and reproducible field-validated tests for HACCP monitoring in dairy farming.
• To emphasize the importance of understanding test limitations for effective screening strategies and result interpretation.
• To address the challenges posed by the current lack of validated tests for chemical and infectious agents in achieving HACCP program objectives.

Main Methods:

• Review of current requirements for on-farm HACCP monitoring tests.
• Analysis of the impact of test specificity and prevalence on screening strategies.
• Evaluation of the implications of test validation status on HACCP program efficacy.

Main Results:

• Cost-effective, accurate, and reproducible tests are essential for dairy HACCP monitoring.
• Field validation and understanding test limitations are critical for rational interpretation and screening.
• Low specificity can lead to excessive costs and false positives, particularly for low-prevalence agents.

Conclusions:

• The dairy industry requires field-validated tests for effective HACCP implementation.
• Absence of positive results does not guarantee freedom from agents without 100% sensitive testing of the entire herd.
• A lack of validated tests impedes the consistent achievement of HACCP program goals for ensuring food safety.