Genetic variation of CAST gene in Local Karnobat and Karnobat merino sheep breeds Ivona Dimitrova, Milena Bozhilova-Sakova, Margarit Iliev and Atanaska Teneva BIO Web Conf., 42 (2022) 01029 Published online: 13 January 2022 DOI: 10.1051/bioconf/20224201029