EN
The autors discuss methods through which the reproductive potentialin cattle may be increased.Two procedures for mass production of embryos to be used in cattle breeding schemes are now available, namely superovulation and embryo transfer, nd more recently in vitro embryo production.Hormonal treatmentfor multiple ovulation, nonsurgical embryo collection and embryo transfer are widespread techniques to obtain more offspring from genetivally superor cattle (MOET program).However,the cost can br high and the yield of embryos is unpredictable.