Method for breeding improved varieties of dairy cows in unconventional manner by aid of embryo biotechnologies

摘要: The invention relates to a method for breeding improved varieties of dairy cows in an unconventional manner by the aid embryo biotechnologies. Excellent and appropriate female are selected be used as donors. includes steps superovulation, b artificial insemination, c flushing, d examination, e freezing, f thawing, g segregating h transplanting. has advantages that birth rate calves can effectively controlled, production cost reduced, quality milk improved, purpose quickly achieved.