Bovine Development: Difference between revisions
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'''Links:''' [http://embryology.med.unsw.edu.au/OtherEmb/bovine.htm Bovine development original page] | '''Links:''' [http://embryology.med.unsw.edu.au/OtherEmb/bovine.htm Bovine development original page] | ||
==Some Recent Findings== | == Some Recent Findings == | ||
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*''' Vascular changes in the corpus luteum during early pregnancy in the cow'''<ref name="PMID20103987"><pubmed>20103987</pubmed></ref> "The present study determined vascular changes in the bovine corpus luteum (CL) at Day 16 (early maternal recognition period) and Day 40 in early pregnancy and compared them to the CL from Day 12 and Day 16 of the estrous cycle. ...The results suggest that there is no difference in vascular structure between non-pregnant and pregnant luteal tissue during the early maternal recognition period (Day 16). " | |||
*''' | *''' Genome-wide expression profiling reveals distinct clusters of transcriptional regulation during bovine preimplantation development in vivo'''<ref name="PMID19064908"><pubmed>19064908</pubmed></ref> "Bovine embryos can be generated by in vitro fertilization or somatic nuclear transfer; however, these differ from their in vivo counterparts in many aspects and exhibit a higher proportion of developmental abnormalities. Here, we determined for the first time the transcriptomes of bovine metaphase II oocytes and all stages of preimplantation embryos developing in vivo up to the blastocyst using the Affymetrix GeneChip Bovine Genome Array which examines approximately 23,000 transcripts." | ||
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==Taxon== | ==Taxon== |
Revision as of 10:24, 12 October 2010
Introduction
Bovine (taxon- Bos taurus) development is studied extensively due to the commercial applications of cattle both for milk and meat production.
Links: Bovine development original page
Some Recent Findings
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Taxon
Bos taurus
Genbank common name: cow, bovine, domestic cattle
Taxonomy Id: 9913 Rank: species
Genetic code: Translation table 1 (Standard)
Mitochondrial genetic code: Translation table 2 (Vertebrate Mitochondrial)
Lineage( abbreviated ): Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Laurasiatheria; Cetartiodactyla; Ruminantia; Pecora; Bovidae; Bovinae; Bos; Bos taurus
Bovine Development
The table below shows the general timing of early development stages in the bovine embryo, as well as comparing this to other domestic species.
Implantation in the uterus occurs between 30-35 days.
Species | 1 cell (hours) | 8 cell (days) | Blastocyst (days) | Enter Uterus (days) | Length of Gestation (days) |
Cattle | 24 | 3 | 8 | 3.5 | 281 |
Horse | 24 | 3 | 6 | 5 | 337 |
Sheep | 24 | 2.5 | 7 | 3 | 148 |
Swine | 14-16 | 2 | 6 | 2 | 114 |
(Data: Oklahoma State University Learning Reproduction in Farm Animals)
References
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Cite this page: Hill, M.A. (2024, June 15) Embryology Bovine Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Bovine_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G