Enables sterol 14-demethylase activity. Involved in several processes, including cholesterol biosynthetic process via 24,25-dihydrolanosterol; positive regulation of oocyte development; and response to human chorionic gonadotropin. Located in acrosomal vesicle. Biomarker of diabetes mellitus. Orthologous to human CYP51A1 (cytochrome P450 family 51 subfamily A member 1). [provided by Alliance of Genome Resources, Apr 2022]