A survey on characteristics of reproduction in Jeju Thoroughbred mares
Yang, Y.J.;Cho, G.J.(Korea Racing Association, Jeju, Republic of Korea)E-mail:eqnvet@hanmail.net | Nam, T.C.(Seoul National University, Seoul, Republic of Korea)
A total of 301 Thoroughbred mares were investigated the characteristics of breeding in the local areas in Jeju during the period from February 2000 to July 2001. The pregnancy rate and foaling rate in 143 mares were 93.0%, 72.0%, respectively, and mean gestational length was 339.3 days in 2000. The pregnancy rate in 158 mares was 86.7% in 2001. Mature follicles were ovulated in right(46.0%), left(45.2%), and bilateral(7.8%) ovary. The incidence of multiple pregnancies in 158 mares between 15 days and 45 days after mating were 89.3%(single), 10.1%(twin), and 0.6%(triple). The incidence of EED was 13.3%.
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