transferable embryos The efficiency of transferable embryo production from the synchronized and nonsynchronized donors of evaluated breeds is summarized in Table 2. Regardless of the breed, the mean number of transferable embryos produced per donor and the mean percentage of transferable embryos were significantly higher (P < 0.01) for the synchronized than for the nonsynchronized donors. The mean number of transferable embryos per donor was higher for the synchronized donors of all three breeds, but only in Czech Siemmental cows was the value significant (P < 0.05). The difference in the mean
percentage of transferable embryos was significant in cows of Czech Siemmental and Holstein Dairy breeds (P < 0.01).