For citations:
Tkachenkova N.A., Puzankova V.A., Natyrov A.K. Milk productivity of first cows when used in feed additives rations based on lactulose. The Agriculture and Ecosystems in Modern World: Regional and Inter countries’ research. 2023;2(4):43-49. (In Russ.) https://doi.org/10.53315/2949-1231-2023-2-4-43-49