In Vitro Fertilization in Kazakh Whiteheaded Cattle: A Comparative Study oleh Bolat Seisenov, Dulat Duimbayev, Nurlybay Kazhgaliyev, Talgat Abdrakhmanov, Alexandra Tegza, Rustem Abeldinov, Nadezhda Burambayeva, Alma Temirzhanova, Ivan Tegza, Zhomart Kemeshev, Assylbek Zhanabayev, Nurbolat Akhmetbekov, Marat Aisin, Kuandyk Zhugunissov, Arman Issimov