The reference manual outlines the theoretical basis for determining energy and nutrient requirements , Results of scientific and physiological experiments , generalization and analysis of existing recommendations on feeding and experience of domestic and foreign scientific institutions in the field of dairy cattle nutrition and on this basis , for certain age and sex groups of dairy cattle specified, and for lactating and dry cows and grown repair heifers developed new recommendations for detailed feeding , in the development of which an integrated approach is used to combine scientific and economic experiments with a multifactorial method and identify the relationship between the needs of cows and heifers in metabolic energy and nutrients with productivity for lactation periods , Drying and growing ......................................... Improved needs indicators for individual nutrients, macro-micronutrients, vitamins, including a number of nutrition elements not previously taken into account in the recommendations for feeding . Approximate feeding diets for all age and sex groups of dairy cattle are given, the characteristics of feed products used in dairy cattle, as well as the chemical composition and nutritional content of feed. This reference manual replaces the section on normalized feeding of dairy cattle “Norms and diets for feeding farm animals”, published in 2003.