Horse Development: Difference between revisions
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* '''Random X inactivation in the mule and horse placenta'''<ref name="PMID22645258"><pubmed>22645258</pubmed></ref> "In eutherian mammals, dosage compensation of X-linked genes is achieved by X chromosome inactivation. X inactivation is random in embryonic and adult tissues, but imprinted X inactivation (paternal X silencing) has been identified in the extra-embryonic membranes of the mouse, rat, and cow. ...As the most structurally and morphologically diverse organ in mammals, the placenta also appears to show diverse mechanisms for dosage compensation that may result in differences in conceptus development across species." | * '''Random X inactivation in the mule and horse placenta'''<ref name="PMID22645258"><pubmed>22645258</pubmed></ref> "In eutherian mammals, dosage compensation of X-linked genes is achieved by X chromosome inactivation. X inactivation is random in embryonic and adult tissues, but imprinted X inactivation (paternal X silencing) has been identified in the extra-embryonic membranes of the mouse, rat, and cow. ...As the most structurally and morphologically diverse organ in mammals, the placenta also appears to show diverse mechanisms for dosage compensation that may result in differences in conceptus development across species." | ||
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Revision as of 10:29, 10 January 2015
Introduction
Equine development (Latin, equus = "horse")
Horse Links: horse | Category:Horse |
Historic Papers: 1897 Critical Period in Horse Development | 1925 Organ of Jacobson | 1945 Cleavage Stages of the Horse Ova |
Animal Development: axolotl | bat | cat | chicken | cow | dog | dolphin | echidna | fly | frog | goat | grasshopper | guinea pig | hamster | horse | kangaroo | koala | lizard | medaka | mouse | opossum | pig | platypus | rabbit | rat | salamander | sea squirt | sea urchin | sheep | worm | zebrafish | life cycles | development timetable | development models | K12 |
Some Recent Findings
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More recent papers |
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This table allows an automated computer search of the external PubMed database using the listed "Search term" text link.
More? References | Discussion Page | Journal Searches | 2019 References | 2020 References Search term: Equine Embryology <pubmed limit=5>Equine Embryology</pubmed> |
Taxon
Equine Development
338 days
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Animal Notes and Table Data Sources
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Genetics
Chromosomes: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
31 | X | 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 X
Genome: Equus caballus
Morula and Blastocyst
Genital Development
Gastrointestinal Tract
Prenatal Development of the Digestive System in the Horse.[2]
- 21 days - oral cavity was an empty space, and the liver contained proliferating endodermal cells.
- 25 days - fusiform stomach and the pancreatic bud were present.
- 28 days - small tongue and the esophagus occurred.
- 30 days - primary and secondary palates were developed, the liver contained cords of hepatocytes, and the pancreas was triangular.
- 40 days - crypts had formed in the intestinal loops, cell differentiation was observed in the hepatic parenchyma, and the pancreas was elongated.
- 50 days - Pancreatic acini and islets and intestines were highly convoluted.
- 75 days - Three segments of the pharynx
- 105 days - intestinal villi were wide with round tips; especially, the liver, stomach, and oral cavity showed key steps of anatomical and cellular differentiation.
References
Reviews
<pubmed></pubmed> <pubmed></pubmed> <pubmed></pubmed> <pubmed></pubmed>
Articles
<pubmed></pubmed> <pubmed>24778084</pubmed> <pubmed>22645258</pubmed> <pubmed>21923925</pubmed> <pubmed>21209420</pubmed>
Search Pubmed
Search Pubmed: equine development
External Links
External Links Notice - The dynamic nature of the internet may mean that some of these listed links may no longer function. If the link no longer works search the web with the link text or name. Links to any external commercial sites are provided for information purposes only and should never be considered an endorsement. UNSW Embryology is provided as an educational resource with no clinical information or commercial affiliation.
- Oklahoma State University Learning Reproduction in Farm Animals
Animal Development: axolotl | bat | cat | chicken | cow | dog | dolphin | echidna | fly | frog | goat | grasshopper | guinea pig | hamster | horse | kangaroo | koala | lizard | medaka | mouse | opossum | pig | platypus | rabbit | rat | salamander | sea squirt | sea urchin | sheep | worm | zebrafish | life cycles | development timetable | development models | K12 |
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, April 26) Embryology Horse Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Horse_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G