A Review on Various Antioxidants Utilized in Bovine Semen Extenders

High-quality cryopreserved bovine semen is vital for successful artificial insemination (AI) program, which is the most inexpensive and the quickest mode of genetic improvement. Cryopreservation of sperm is an effective method in infertility management; however, it can also affect spermatozoa in post-thawed semen. Many researchers showed that supplementation of extenders with antioxidants provides a cryoprotective effect on sperm quality by minimizing the harmful impact of reactive oxygen species (ROS) and enhancing post-thaw spermatozoa. This review sheds light on the protective effects of various antioxidants considered to reduce the oxidative stress following freeze-thawing of bull semen in AI programs.