The Stability of Vitamin A from Different Sources in Vitamin Premixes and Vitamin-Trace Mineral Premixes

This study was conducted to investigate the stability of five commercial vitamin A products in premixes and vitamin-trace mineral premixes. The used were: Xinhecheng, Zhejiang medicine, Kingdomway, DSM, BASF. were stored three (for suckling, weanling, finishing pigs) or (VTM) pigs). Vitamin an environmentally controlled chamber set at 25 °C 60% humidity. VTM room temperature (approximately 22 °C). Sampling performed on d 0, 90, 180, 270, 360. Stability reported as residual activity (% initial) each sampling point. For premixes, all interactive main effects storage time product not significant. there no significant interaction between time, effect product, but (p < 0.01). In conclusion, a longer reduced difference commercially available A.