Abstract
stallion sperm can be liquid stored effectively prior to and following sex-sorting. The high rate of embryonic death observed in the groups inseminated with frozen-thawed sperm may reflect a detrimental effect on embryonic development of the 3% DMF used as the cryoprotectant. The low number of mares available for this study limited our ability to evaluate the effect of the combined cryoprotectant (DMF:glycerol) on the fertility of cryopreserved sexsorted stallion sperm. Further refinement of the processing conditions used in this study will enable the commercialisation of frozen-thawed sex-sorted stallion sperm. Mare height (cm) 150.00 7.16 Mare thorax perimeter (cm) 187.62 8.74 Gestational length (days) 337.48 8.02 Time for placenta expulsion (minutes) 82.58 100.49 Placental weight (kg) 5.34 1.27 Umbilical cord length (cm) 64.62 14.27 Micro CG 3.06 1.04 Micro CnG 2.35 0.69 Micro CP 2.64 1.01 Foal weight (kg) 49.62 5.49 Foal height (cm) 95.65 4.45 Foal thorax perimeter (cm) 81.17 2.89
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