Viability of horse embryos after storage and long-distance transport in the rabbit

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Abstract
Horse embryos remain viable and develop normally for at least 2 days when stored in the ligated oviducts of the rabbit during transport over long distances before transfer into recipient mares. The extensive use of these techniques in the horse may be limited by the difficulty of inducing superovulation in the mare as well as by refusal of horse breed registration authorities to register progeny obtained from embryo transfers. Until embryo-freezing techniques are developed for the horse, the ligated rabbit oviduct would seem to provide an eminently suitable means of temporarily storing and transporting horse embryos.