Theriogenology Department Faculty of Veterinary Medicine Benha University Egypt;
Artificial Insemination and Embryo Transfer Department Animal Reproduction Research Institute Agriculture Research Center Giza Egypt;
Artificial Insemination and Embryo Transfer Department Animal Reproduction Research Institute Agriculture Research Center Giza Egypt;
Theriogenology Department Faculty of Veterinary Medicine Benha University Egypt;
Butylated hydroxytoluene; Buck; DNA; Frozen semen; Lipid peroxidation;