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Cryopreservation of gander semen
British Poultry Science
|July 27, 2001
Summary
Dimethylacetamide (DMA) cryoprotectant improves gander semen survival after freeze-thawing. Frozen semen retains high fertility rates when used for artificial insemination within 9 days.
Area of Science:
- Animal Reproduction
- Cryobiology
- Veterinary Science
Background:
- Cryopreservation of avian semen is challenging due to unique cellular characteristics.
- Dimethylacetamide (DMA) and Dimethyl sulphoxide (DMSO) are common cryoprotective agents.
Purpose of the Study:
- To evaluate the efficacy of DMA and DMSO in gander semen cryopreservation.
- To assess the fertility of cryopreserved gander semen post-thaw.
Main Methods:
- Gander semen was cryopreserved using a fast-freezing technique on dry ice.
- Different concentrations of DMA and DMSO were tested as cryoprotectants.
- Fertility trials were conducted after artificial insemination with thawed semen.
Main Results:
- A 9% concentration of DMA significantly improved sperm survival rates after freeze-thawing compared to controls.
- Fertility rates ranged from 68% to 95% when semen was used for artificial insemination between 3 and 9 days post-collection.
Conclusions:
- Fast-freezing with 9% DMA is an effective method for gander semen cryopreservation.
- Cryopreserved gander semen maintains high fertilizing capacity for up to 9 days, crucial for breeding programs.