Related Experiment Video
Updated: Dec 27, 2025
11:01
A High-Throughput Method For Zebrafish Sperm Cryopreservation and In Vitro Fertilization
Published on: July 6, 2009
31.8K
Canine semen cryoconservation: Emerging data over the last 20 years
Djemil Bencharif1, Marta Dordas-Perpinya1
1Laboratory of Biotechnology and Reproductive Pathology, ONIRIS: The National Veterinary, Food Agriculture, and Food Hygiene School of Loire Atlantique, Nantes, France.
Reproduction in Domestic Animals = Zuchthygiene
|February 25, 2020
Summary
Successful canine semen cryopreservation relies on optimal extenders and equilibration. Egg yolk, particularly its LDL component, shows promise, with 6 hours equilibration being ideal for sperm survival and mobility.
Area of Science:
- Veterinary Science
- Reproductive Biology
- Cryobiology
Background:
- Canine semen cryopreservation has been utilized since 1969, with ongoing advancements.
- Sperm motility post-thawing is a key metric for assessing cryopreservation success.
Purpose of the Study:
- To review critical factors for successful canine semen freezing and thawing.
- To evaluate cryoprotective extenders and equilibration times for canine sperm.
Main Methods:
- Analysis of cryoprotective properties of extenders, focusing on egg yolk and its components.
- Investigation of the impact of equilibration duration at +4°C on sperm viability.
Main Results:
- Egg yolk, despite microbial risks, is an effective cryoprotectant.
- Low-density lipoproteins (LDL) from egg yolk at 6% with 20 mM glutamine yielded 54.5% sperm mobility.
- Optimal equilibration time for canine sperm before freezing is 6 hours.
Conclusions:
- Egg yolk plasma offers similar efficiency to LDL, with improved industrial applicability.
- Future research may involve liposomes and synthetic substances to mimic LDL's cryoprotective role.
