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Review
. 2021 Mar 1:162:67-73.
doi: 10.1016/j.theriogenology.2020.12.028. Epub 2021 Jan 3.

Small ruminant SexedULTRA™ sperm sex-sorting: Status report and recent developments

C González-Marín  1 , C E Góngora  2 , J F Moreno  2 , R Vishwanath  2
Affiliations
Review

Small ruminant SexedULTRA™ sperm sex-sorting: Status report and recent developments

C González-Marín et al. Theriogenology. .

Abstract

Flow cytometry sperm sex-sorting based on the relative DNA difference between X- and Y-chromosome bearing populations is an established method that has allowed the production of pre-sexed offspring in a multitude of species and has been a commercial success in cattle production for the past twenty years. Several improvements to the technology and the processing methods have increased the sorting efficiency of ejaculates and the post-thaw quality of sex-sorted sperm, allowing for the fertility gap between conventional (non-sorted) and SexedULTRA™ sex-sorted sperm to be bridged. Small ruminant industries are now progressively testing sex-sorted sperm for application in their specific niches and environments. A review of the key advances and the recent developments in caprine, ovine and cervine sperm sex-sorting technology are described in this publication.

Keywords: Fertility; Sex-sorted sperm; SexedULTRA™; Small ruminants.

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Conflict of interest statement

Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: The authors are employed by STGenetics®/Sexing Technologies.

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