00763naa#a2200205#i#450# EN\\bibl\110269 20260114113640.3 2588-0209 20260113b2026####ek#y0engy0150####ca RU OPTIMIZATION OF ENERGY-PROTEIN-MINERAL FEEDING IN DIETS OF RED STEPPE FIRST-CALF HEIFERS IN NORTHERN CONDITIONS Journal article Moscow Electronic science 2026 15 с. Journal article local Кормление животных. 636.084 Швейцарские породы. 636.237 Nikolaeva Natalia Afanasyevna Borisova Paraskeva Prokopyevna Alekseeva Nurgustana Mikhailovna Lukin Vladimir Nikolaevich e-integral.ru