ARTICLE FEED & ADDITIVE MAGAZINE September 2025 69 overall trend of MDA content in poultry meal was increased gradually. The maximum value, 0.97 ppm, was achieved in the poultry meal control group on the 28th day, which indicated that with no antioxidant in poultry meal the oxidation is more severe and thus harmful oxidative product accumulated more. Compared with group Product ATY 550g, lower MDA content of 0.65 ppm was found in group Oxivia 500g. Therefore, according to the present study, the antioxidative efficacy of Oxivia C200DR is equal to a 10% higher dosage of Product ATY. It may be because Oxivia C200DR has better uniformity and granularity, leading to evenly mixing. RapidOxy test of poultry meal samples were conducted at 120°C and 7par. The purpose of the study was to evaluate the efficacy of two antioxidants, where two different dosages were introduced to determine if Oxivia C200DR (from Kemin Industries) is comparable with a 20% higher dosage of Product KYB. It can be seen from Table 1 that the antioxidant groups, Oxivia C200DR and Product KBY, were better than control group. The RapidOxy result of Oxivia C200DR was 111.4 minutes, which is slightly higher than that of product KYB. Similar with poultry meal MDA test, each gram of Oxivia C200DR, with better uniformity and granularity, has more particles than that of product KYB, thereafter it enhances the even mixing and distribution inside the raw material. It may explain that the 20% lower dosage of 500g/t of Oxivia C200DR performs better than higher dosage 600g/t of product KYB. CONCLUSION Oxidation of raw material is very harmful to aquatic animals while antioxidants are one of the critical solutions to prevent raw material oxidation, including poultry meal, fish oil and soybean oil, etc. Various antioxidants were collected from the market and have been evaluated to determine efficacy. Results demonstrated that in total four liquid antioxidants and two powder form antioxidants performed well in present study. Among these, Barox performed best in fish oil, Oxivia C200LQ and Product BC worked well in soybean oil and Oxivia C200DR was the best in poultry meal by considering the amount of dosage. About Richard Liu With a Master’s degree in Feed Manufacturing Technology from the Norwegian University of Life Sciences, Norway, Richard Liu has been actively involved in aquaculture product development and management since 2015. Liu currently serves as a Global Project Manager. In his role, he works closely with feed mills to develop and optimize nutrient efficiency and feed safety solutions. His work is fundamentally aligned with the principles of sustainable aquaculture. By advancing feed efficiency and safety, it directly contributes to reducing waste and resource consumption in farming. Photo: Attasit saentep | Shutterstock Sample Description RapidOxy (min) Table 1. RapidOxy results in poultry meal treated with various antioxidants Poultry meal Poultry meal + Oxivia C200DR 500g Poultry meal + Product KYB 600g 88.22 111.4 108.28
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