Всероссийский научно-исследовательский институт физиологии, биохимии и питания животных – филиал Федерального государственного бюджетного научного учреждения «Федеральный научный центр животноводства – ВИЖ имени академика Л.К. Эрнста»
The trials were performed on 4 primiparous (trial I, 15-65 DM) and 8 multiparous cows (trial II, 10-35 DM) of Kholmogor breed. In trial I, heifers were fed basic ration (BR, period I, 15-30 d) or BR supplemented by
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