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http://dx.doi.org/10.12750/JET.2015.30.1.45

Studies on the Estimation of Pregnancy Rate of White Hanwoo (Albino Korean Native Cattle) with Sexed Semen  

Kim, Sung Woo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Choi, Jinseok (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Choe, Changyoung (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Kim, Dongkyo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Ko, Yeoung-Gyu (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
So, Chungsil (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Seong, Hwan-Hoo (Animal Genetic Resources Research Center, National Institute of Animal Science, RDA)
Publication Information
Journal of Embryo Transfer / v.30, no.1, 2015 , pp. 45-50 More about this Journal
Abstract
The purpose of this study is to produce wanted sex progeny of genetically confined White Hanwoo (albinism) with preselected sex sperm. One bull of White Hanwoo was chosen for semen donor and X sperm was sorted by MoFlo XDP cell sorter. To compare the pregnancy and birth rates, KPN straw was used as control, total number of unsorted sperm was $20{\times}10^6/straw$. Sexed X frozen semen with $20{\times}10^6$ cells or $4{\times}10^6$ cells per straw were in seminated twice on Hanwoo heifers. The abnormality of the sexed X semen was $24.9{\pm}7.31%$ and distal reflex abnormality of mid piece was significantly (p<0.05) higher (11.7%) compared with that of KPN 768 (5.6%). There were no differences on the pregnancy and birth rates between $2{\times}10^6$ cells or $4{\times}10^6$ cells of X-sperm but KPN semen showed significant differences (p<0.05). The pregnancy rates of KPN 768, $2{\times}10^6$ cells and $4{\times}10^6$ cells X-sperm of White Hanwoo cattle were 85.0%, 26.3% and 50%. The birth rates were 80.0%, 15.8% and 21.4%, respectively. The female offspring rates of KPN 768, $2{\times}10^6$ cells and $4{\times}10^6$ cells X-sperm of White Hanwoo cattle were 43.8%, 100% and 100% (p<0.05). These results indicated that sex sorted White Hanwoo could be used for the production of wanted progeny with $2{\times}10^6$ cells/straw for AI. To increase the efficiency of calf production, the sperm number of sex sorted semen will be optimized for sex selection of White Hanwoo progeny.
Keywords
Albino Korea native cattle; sexed semen; AI;
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