Morphological assessment of preimplantation embryo quality in cattle
نویسندگان
چکیده
منابع مشابه
Molecular Basis of Differential Gene Expression in Themouse Preimplantation Embryo
Preimplantation development of the mammalian embryo consists of stages that include formation of the <span style="font-variant: normal; font-style: normal; font-family: ArialM...
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BACKGROUND Hormonal modulation of the endometrium towards receptivity is well established; however, the role of embryonic stimuli in modulation of the endometrium prior to implantation, especially in primates, is unknown. The aim of the present study was to evaluate the endometrial histology when the embryo was present in its vicinity prior to implantation. METHODS Preimplantation factor (PIF...
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The role of membrane sterols in the compaction and subsequent development of the preimplantation mouse embryo was studied by incubating embryos in 7-ketocholesterol and other oxygenated sterols. These sterols have been shown to inhibit sterol synthesis and deplete membranes of cholesterol in a variety of other cell types. Compaction and subsequent blastocyst formation were normal when embryos w...
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Following in vitro maturation, approximately 90% of immature bovine oocytes will reach metaphase II and extrude the first polar body; approximately 80% will undergo fertilization and cleave, at least once, to the two-cell stage. However, only about 30-40% will ever reach the blastocyst stage. This would suggest that the post-fertilization part of the process of in vitro embryo production, the l...
متن کاملEmbryo Transferfortrans Cervicalin Cattle
The aim of this study was to analyze the incidence of stage of embryonic development, embryo quality and the time of transfer on pregnancy rate in embryo transfer program timed. We were worked a total of 23Holsteincowsasembryo donors, super-ovulated with gonadotropin of pregnant mare serum (PMSG) (2500 3000UI).69 cows were used as recipients of Holstein dairy heifers with an age of20 months and...
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ژورنال
عنوان ژورنال: Bioscientifica Proceedings
سال: 2019
ISSN: 2515-0227
DOI: 10.1530/biosciprocs.5.009