Feed is a crucial part of animal production, making its quality essential for animal health and successful production outcomes. In this thesis, we reviewed the legislation forming the basis for external inspection control, as well as the development of internal regulations, instructions, guidelines for analyses and hazard analysis and critical control points (HACCP) in internal quality control. The aim of the work was to review the results of analyses from samples collected for external inspection and internal quality control of selected feed materials and feed mixtures between 2021 and 2024 in the feed mill. The review covered some of the most commonly used feedstuffs: corn, wheat, soybean meal, sunflower meal, corn gluten, wheat bran and four pelleted feed mixtures produced in the largest quantities at the mill: feed for dairy cows, fattening pigs, laying hens, and rabbits. We examined the results of both quality controls over the years and the differences in measured parameters of pelleted feed mixtures. We monitored production parameters (steam pressure, temperature) and quality parameters (pellet hardness, moisture). The results indicated differences between years in the number of samples taken for external inspection control. Internal control revealed an increase in the number of analyses in recent years and greater differences between years, mainly due to additional monitoring of mycotoxin content. The results of feed analyses showed differences between years in the DON toxin content of corn and wheat, differences in the crude protein content in all feed samples except wheat, and differences in the moisture content between years for all feeds. We also found differences between years in the bulk weight of wheat bran. In pelleted feed mixtures, we found statistically significant differences between years in pellet hardness and moisture content after cooling. The pellet hardness of the K-19-peleti feed mixture deviated from the prescribed standard. The results confirm that consistent quality control and monitoring of key parameters are essential to ensure high quality feed. Particular attention should be paid to correct sampling and the monitoring of technological parameters in production.
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