Demydko, O.S. 2023. METABOLIC PROCESSES IN THE RUMEN OF CALVES WHEN FED VEGETABLE FEED. Bulletin of Sumy National Agrarian University. The series: Veterinary Medicine. 1(60) (Jun. 2023), 28-32. DOI:https://doi.org/10.32782/bsnau.vet.2023.1.5.