Goat milk is becoming increasingly attractive for the food sector due to some advantages compared to cow milk: it has higher fat content, protein levels, magnesium, potassium, phosphorus, cobalt, vitamins B1, B2, C, and some amino acids. The Saanen breed is the most attractive for farms since, along with the qualitative superiority of milk, this breed is characterized by increased milk yield. Currently, the main goal of research in goat breeding is to preserve and improve animals’ genetic potential under intensive exploitation conditions when any environmental factor (incredibly inadequate feeding) can negatively affect the productive qualities of animals. The period of their prenatal and early postnatal ontogenesis is especially significant. One of the critical indicators of metabolic processes in the body of young animals is iron, which enhances oxidative processes and promotes the reproduction of erythrocyte hemoglobin. The study showed the influence of the age factor on an increase in the concentration of iron in the blood and better absorption of iron in the presence of copper in the body. The effectiveness of using an iron-containing preparation in combination with protein hydrolysate, a source of protein necessary for the formation of enzymes and hormones involved in regulating iron metabolism in the body, has been noted.