For citations:

Sakhanchuk A.I., Kallaur M.G., Kot E.G., Nevar A.A. OPTIMIZATION OF STANDARD REQUIREMENTS FOR CALCIUM, PHOSPHORUS, MAGNESIUM, SULFUR AND VITAMIN D IN HOLSTEIN DAIRY COWS IN DRY, FRESH AND INCREASED MILK YIELD PERIODS. Zootechnical Science of Belarus. 2022;57(2):62-71. (In Russ.) https://doi.org/10.47612/0134-9732-2022-57-2-62-71