Method for producing ratite Birds or preferential ratttes females.

摘要

The present Invention is a method for the determination of Sex in ratites or ratite Birds, such as Ostriches.The Method includes the steps of administering a material that causes the sex is determined in a fertilized egg or ratida thereof, and incubated the eggs until they Hatch.Preferably, the step of Administration includes a step of injecting the material inside the egg, and preferably before the step of injectionThere is the step of drilling a Hole in the Shell of the Egg.The material that determines sex in ratites or ratite includes natural estrogens or a functionally equivalent amount of its Synthetic analogues to induce the development of females.And not aromatizables natural androgens, or a functionally equivalent amount of its Synthetic analogues to induce the development of males.Preferably, the material is 17beta estradiol (for the development of dihidrotetosterona (females) or for the development of males). One solution may be for example, 1.- 2 mg estradiol 17beta, preferably dissolved in 40 microliters of ethanol 95, or preferably 7.5 dihydrotestosterone dissolved in 100 microliters of ethanol 95, respectively.