The aim of this study was to analyze the nutritional value of feed mixtures and premixes pro- duced by  selected  feed manufacturers  in  southeastern  Kazakhstan  for  dairy  farms.  The  feed mixtures produced in the analyzed feed mills differed significantly (p≤0.01 and p≤0.05) in terms of their basic nutrient content. The amino acid, mineral, and vitamin composition of the feed mixtures was neither monitored nor balanced, except in the Good-Zhem feed mill, as the facili- ties did not produce mineral-vitamin premixes. For research purposes, the Kormovik and Vet Effect feed mills developed premixes for lactating cows, dry cows, and young cattle aged 6-12 months. The premixes contained high levels of minerals, including Ca, P, Mg, Na, Cl, Cu, Zn, Mn, Co, Se, and I, as well as vitamins A, D, and E. For high-yielding cows from the OST group and for cows in the first dry period (period I), an antioxidant was added at levels of 177 mg kg^-1 and  95  mg  kg^-1,  respectively.  Additionally,  for  low-yielding  cows  and  cows  in  the  second  dry period (period II), supplementary vitamins were included: K, B₁, B₂, B₄, B₅, B₆, B₉, B₁₂, and PP. The experimental premixes used in cattle feeding on the JSC AIC Adal farm allowed the main- tenance of milk yield in cows, kept there at the level of 8 000 kg of milk. The research shows that including a premix in cattle feed rations helps to balance ratios in terms of their nutritional value and content les better use of the animals’ genetic potential.