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http://dx.doi.org/10.12750/JET.2017.32.3.235

Effects of Triladyl-egg Yolk Diluents on the Viability of Frozen Korean Black-goat Spermatozoa from Cauda Epididymis and Electro-ejaculated Semen  

Kim, Sung Woo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Lee, Jinwook (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Kim, Kwan-woo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Kim, Chan-Lan (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Jeon, Ik Soo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Lee, Sung-soo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Publication Information
Journal of Embryo Transfer / v.32, no.3, 2017 , pp. 235-241 More about this Journal
Abstract
To preserve genetic materials, cryopreservation of the semen from live animals is the main technique to establish cryo-banking system which could be used for artificial insemination and embryo transfer. However, the population of Korean black goat (KBG) becomes to dwindle in number and is now faced genetic erosion by crossbreeding with non-native breeds in small KBG farms. In this study, simple freezing method was used to preserve frozen semen from KBG using spermatozoa of cauda epididymis (CE) and electro-stimulated semen (ES). The negative effects of seminal plasma on fresh sperm was confirmed using precipitation test of Triladyl egg yolk diluent and sperm viability after thawing was compared between CE and ES spermatozoa. When seminal plasma of fresh ES semen was washed with semen washing media (SWM), the rates of live sperm shown no significant difference between CE and ES spermatozoa before freezing. However, the survival rate of frozen/thawed CE sperm was higher than ES ($74.6{\pm}10.6%$ vs $53.8{\pm}5.2%$) with significant difference (p < 0.05). The results of longevity test on frozen/thawed sperm from CE showed healthier sperm than ES. Therefore, spermatozoa from CE could be used for cryo-banking system in KBG lines. The more studies are needed to increase survival rate of ES semen.
Keywords
Korean black goat; Cauda epididymis; Semen; Electro-ejaculation;
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