Overview
EN ISO 14565:2000 - Animal feeding stuffs - Determination of vitamin A content - Method using high-performance liquid chromatography (ISO 14565:2000) - defines a laboratory method to determine the concentration of vitamin A in animal feeds using high-performance liquid chromatography (HPLC). Adopted by CEN and mirrored in national publications (e.g., SIST EN ISO 14565:2001), this standard provides a harmonized analytical approach for feed analysis and quality control.
Key Topics
The standard addresses the main elements needed to perform accurate, reproducible vitamin A determinations in feed samples:
- Analytical technique: Use of high-performance liquid chromatography (HPLC) for separation and quantification of vitamin A compounds.
- Sample handling: Requirements for representative sampling, preparation and extraction to ensure reliable results.
- Calibration and quantification: Use of appropriate reference materials or standards and procedures for generating calibration curves and calculating results.
- Method validation and quality control: Criteria for precision, accuracy, limits of detection/quantification, and routine QC checks to maintain analytical performance.
- Reporting: Recommended ways to express results (units, reporting limits) and information to include in test reports for traceability.
(Note: the published extract does not include detailed step-by-step parameters; laboratories should consult the full EN ISO 14565:2000 document for exact procedural details.)
Applications
This standard is practical and widely used for:
- Feed manufacturers performing in-house quality control to confirm vitamin A levels in premixes, compounded feeds and finished products.
- Analytical testing laboratories offering accredited feed analysis services based on standardized HPLC methods.
- Regulatory bodies and inspectors verifying compliance with nutritional labeling and statutory vitamin fortification limits.
- Animal nutritionists and formulators ensuring correct dosing of vitamin A for animal health, growth performance and product quality.
- Research groups studying vitamin stability in feed matrices, processing effects, or bioavailability.
Using EN ISO 14565:2000 helps ensure consistent, comparable vitamin A results across laboratories and supports product safety, compliance and formulation accuracy.
Related Standards
- Other ISO/CEN methods for feed analysis and nutrient determination (e.g., methods for vitamins, minerals and proximate composition) are commonly used alongside EN ISO 14565:2000 to provide a complete nutritional profile.
- Laboratories should align this method with their national accreditation requirements and any regulatory guidance relevant to feed composition and labeling.
Keywords: EN ISO 14565:2000, vitamin A determination, animal feeding stuffs, high-performance liquid chromatography, HPLC, feed analysis, vitamin A content.