In livestock industry, one sex is usually preferred because of the impact on the production (e.g. milk from cows, eggs from laying hens). Furthermore, in pig production, the male-specific boar taint is a big hurdle for consumer acceptance. Consequently, a shift in the ratio towards the desired sex would be a great benefit. The most widely applied method for pre-determination of the sex is the fluorescence-activated sperm sorting (FACS), which relies on the different DNA content of the X- and Y-chromosomal sperm. However, the successful practical adaption of this method depends on its ease of use. At present, sperm sexing via FACS has only reached commercial application in cattle. Nevertheless, sperm sexing technology still needs to be improved in regard of the efficiency and reliability to obtain high number of sexed sperm and less invasive sperm treatment to avoid damage. New genome editing technologies such as Zinc finger nucleases (ZFN), Transcription-activator like endonucleases (TALENs) and the CRISPR/Cas system emerged and offer great potential to affect determination of the sex on the genome level. The sex-determining region on the Y chromosome (SRY) serves as a main genetic switch of male gender development. It was previously shown, that a knockout of the SRY gene in mice and rabbits displayed suppressed testis development in the fetal gonadal ridges resulting in a female phenotype. These new technologies hold great opportunities to pre-determine the sex in pigs. However, further investigations are needed to exploit their full potential for practical application.