In vitro maturation and fertilization of cattle oocytes and subsequent in vitro culture of zygotes and embryos is discussed in the context of recent encouraging data. Mass production of embryos produced in this way in the future will have a great impact on animal production and animal breeding plans, for example the so-called MO-ET (multiple ovulation and embryo transfer) plan which aims at est...

The development of livestock in industrialized nations has shown that when breeding activity is well-organized, it feasible to enhance breeds and quickly boost output. Famous including the Holstein, Swiss, Simmental, Hereford, Brangus, Charolais, Kian, many other dairy meat came into being. In article republican system, improvement methods, such as evaluation selection sorting cattle according ...