Modified insemination procedure in cattle: deep uterine deposition of smaller numbers of frozen-thawed or sex-selected spermatozoa
نویسنده
چکیده
Despite the long established and widely practised technique of artificial insemination in cattle, specific interactions between mammalian spermatozoa and the female genital tract remain incompletely understood. The following essay summarises one current view of the progress of bull spermatozoa in the female tract relative to the time of ovulation. Drawing on this physiological background, modifications to conventional procedures of insemination are proposed. In essence, these involve deposition of the frozen-thawed sperm suspension close to the distal tip (ovarian extremity) of the appropriate uterine horn. As it is approximately 50 years since the first commercial centres for artificial insemination SYNTHESE SCIENTIFIQUE
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