Sexed semen: current state-of-the-art in small ruminants

Area of Science:

• Animal Science
• Reproductive Biology
• Agricultural Technology

Background:

• Global demand for animal products requires sustainable livestock systems.
• Flow cytometric sperm sex-sorting is crucial for controlling offspring sex ratios in food-producing mammals.
• Current application in small ruminants (sheep, goats) is limited compared to cattle.

Purpose of the Study:

• To review the application of sperm sex-sorting in small ruminants.
• To summarize experimental and field trial outcomes.
• To identify constraints hindering commercial adoption.

Main Methods:

• Review of existing literature on sperm sex-sorting in sheep and goats.
• Analysis of experimental and field trial data.
• Identification of biological, technical, logistical, and economic factors.

Main Results:

• Sperm sex-sorting technology is effective but faces challenges in small ruminants.
• Sperm sensitivity to sorting and cryopreservation impacts fertility.
• Fertility rates of sexed semen require further optimization.
• Logistical and economic factors limit widespread implementation.

Conclusions:

• Advancing commercial adoption of sexed semen in small ruminants requires addressing specific biological and technical hurdles.
• Optimizing reproductive efficiency in sheep and goat production is achievable through improved sex-sorting technologies.
• Further research and development are needed to overcome current limitations.