Antibiotic therapy of metritis in Holstein cows in Volgograd region Grigory Firsov, Alexey Ryadnov, Zoya Morozova, Oleg Budtuev and Tamara Ryadnova BIO Web Conf., 118 (2024) 01021 Published online: 12 July 2024 DOI: 10.1051/bioconf/202411801021