Bovine Development: Difference between revisions

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*''' Genome-wide expression profiling reveals distinct clusters of transcriptional regulation during bovine preimplantation development in vivo'''<ref name="PMID19064908"><pubmed>19064908</pubmed>| [http://www.pnas.org/content/105/50/19768.long PNAS]</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."
*''' Genome-wide expression profiling reveals distinct clusters of transcriptional regulation during bovine preimplantation development in vivo'''<ref name="PMID19064908"><pubmed>19064908</pubmed>| [http://www.pnas.org/content/105/50/19768.long PNAS]</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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Search term: [http://www.ncbi.nlm.nih.gov/pubmed/?term=Bovine+Embryology ''Bovine Embryology'']
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==Taxon==
==Taxon==
Bos taurus
Bos taurus

Revision as of 22:12, 6 June 2013

Introduction

Cow and calf

Bovine (taxon- Bos taurus) development is studied extensively due to the commercial applications of cattle both for milk and meat production.

Cattle Gestation Periods (Bovine Development)  
Breed Average Days
(±7–10 days)
Angus 281
Ayrshire 279
Brahman 292
Brown Swiss 290
Charolais 289
Guernsey 283
Hereford 285
Holstein 279
Jersey 279
Limousin 289
Shorthorn 282
Simmental 289


Bovine Links: Bovine Development | Category:Bovine
Historic Embryology  
1922 Pharyngeal Arches | 1946 Oocyte to Blastocyst

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
Historic Embryology  
1897 Pig | 1900 Chicken | 1901 Lungfish | 1904 Sand Lizard | 1905 Rabbit | 1906 Deer | 1907 Tarsiers | 1908 Human | 1909 Northern Lapwing | 1909 South American and African Lungfish | 1910 Salamander | 1951 Frog | Embryology History | Historic Disclaimer

Some Recent Findings

Bovine stem cell marker expression[1]
  • Expression of pluripotency master regulators during two key developmental transitions: EGA and early lineage specification in the bovine embryo[1] "Pluripotency genes are implicated in mouse embryonic genome activation (EGA) and pluripotent lineage specification. ...Our findings affirm: firstly, the core triad of pluripotency genes is probably not implicated in bovine EGA since their proteins were not detected during pre-EGA phase, despite the transcripts for OCT4 and SOX2 were present. Secondly, an earlier ICM specification of transcripts and proteins of SOX2 and NANOG makes them pertinent candidates of bovine pluripotent lineage specification than OCT4."
  • Vascular changes in the corpus luteum during early pregnancy in the cow[2] "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[3] "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."

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)

Cattle Gestation Periods (Bovine Development)  
Breed Average Days
(±7–10 days)
Angus 281
Ayrshire 279
Brahman 292
Brown Swiss 290
Charolais 289
Guernsey 283
Hereford 285
Holstein 279
Jersey 279
Limousin 289
Shorthorn 282
Simmental 289

Morula and Blastocyst

Bovine morula and blastocyst.[4]

Bovine morula 01.jpg

Bovine Morula (day 4)[4]

Bovine blastocyst 01.jpg Bovine blastocyst 02.jpg

Bovine Blastocyst (day 7)[4]


Bovine stem cell marker expression 01.jpg

Bovine stem cell marker expression[1]

Links: Image - Morula and Blastocyst | Morula A | Blastocyst F | Blastocyst G | Bovine Development | Morula | Blastocyst

Genital Development

The male bovine (bull) first development of the testis at the genital ridge is triggered by SRY expression following the timeline shown below.[5]

  • Day 32 - (CRL 12) Genital ridges first appeared
  • Day 37 - (CRL 18) SRY expression begins
  • Day 39 - (CRL 20) SRY expression peaks
  • Day 42 - (CRL 27) Testis cords distinguishable

References

  1. 1.0 1.1 1.2 <pubmed>22479535</pubmed>| PMC3315523 | PLoS One.
  2. <pubmed>20103987</pubmed>
  3. <pubmed>19064908</pubmed>| PNAS
  4. 4.0 4.1 4.2 <pubmed>21811561</pubmed>| PLoS One.
  5. <pubmed>19844082</pubmed>

Reviews

Articles

Search Pubmed

Search Pubmed: bovine 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.

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
Historic Embryology  
1897 Pig | 1900 Chicken | 1901 Lungfish | 1904 Sand Lizard | 1905 Rabbit | 1906 Deer | 1907 Tarsiers | 1908 Human | 1909 Northern Lapwing | 1909 South American and African Lungfish | 1910 Salamander | 1951 Frog | Embryology History | Historic Disclaimer

Glossary Links

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Cite this page: Hill, M.A. (2024, March 29) Embryology Bovine Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Bovine_Development

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G