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Evaluation of cryopreserved boar semen after supplementation sericin form silkworm ( Bombyx mori ) in semen extender
Author(s) -
Ratchamak Ruthaiporn,
Ratsiri Thanaporn,
Kheawkanha Theerapat,
Vongpralub Thevin,
Boonkum Wuttigrai,
Chankitisakul Vibuntita
Publication year - 2020
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/asj.13428
Subject(s) - extender , sericin , sperm , semen , cryopreservation , andrology , semen cryopreservation , semen extender , artificial insemination , acrosome , semen quality , sperm motility , lipid peroxidation , boar , chemistry , biology , zoology , biochemistry , medicine , silk , antioxidant , materials science , embryo , pregnancy , microbiology and biotechnology , genetics , organic chemistry , composite material , polyurethane
Boar cryopreserved semen is scarcely used for artificial insemination due to its quality which is largely reduced by membrane lipid peroxidation. This present study was designed to improve the post‐thawed boar semen quality by determining the optimal level of sericin supplementation (antioxidants) in semen extender. Five levels of sericin supplementation between 0% and 1% (w/v) were examined. Semen was frozen by the liquid nitrogen vapor method, thawed slowly at 5°C for 5 min, and used for the evaluation of sperm quality. The results indicated 0.5%–1% sericin supplementation was more effective on maintenance of sperm viability, acrosome integrity, and mitochondrial functions during freezing–thawing. Moreover, 0.75% sericin supplementation was most protective toward total sperm motility and sperm progressive motility. Additionally, 0.25%–0.75% sericin supplementation significantly suppressed increases in the index of lipid peroxidation. In conclusion, 0.75% sericin is recommended as an alternative component of the freezing extender to improve cryopreserved boar semen. However, further research using AI will be necessary to demonstrate that this indication can be applied to the production of offspring in the farms.