In dairy cattle, the dry period cation-anion balance is a critical factor influencing the animal's health and productivity. The cation-anion balance of a ration is contingent upon the anionic and cationic ions present and may assume either a negative or positive value. During the dry period, the optimal cation-anion balance is negative. The administration of anionic salts or anionic ration during this period has been demonstrated to mitigate the risk of milk fever and prevent the development of numerous metabolic disorders. Furthermore, the administration of anionic substances during this period has been demonstrated to influence milk yield, fertility and milk fat. An excessive cation ratio in the ration can cause metabolic problems, including metabolic acidosis, milk fever, and metabolic alkalosis, which is characterised by a decrease in pH and the presence of urine. Therefore, according to the studies, it is recommended that the diet be prepared in a way that the cation-anion balance is negative in the dry period (between -100 to -200 mEq/kg DM).