Linked Life Data

16139603

Source:http://linkedlifedata.com/resource/pubmed/id/16139603

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2005-9-5
pubmed:abstractText
In the present study, oocytes from F1 hybrid cattle, as well as their parental lines, were recovered by ovum pick up (OPU) and used as recipient cytoplasm for somatic cell nuclear transfer (SCNT). Four F1 hybrid (Holstein dam x Chinese Yellow sire), 10 Holstein and four Chinese Yellow cattle were subjected to OPU once weekly. There were no significant differences among breeds for number of recovered oocytes per session (overall average, 7.8+/-0.5; mean+/-S.E.M.), quality of the recovered oocytes, or oocyte maturation rate (72-73%). Matured oocytes were all used as recipient cytoplasm (without selection) and a single batch of cumulus cells collected from a Holstein cow were used as donor cells. Although reconstructed embryos initiated cleavage sooner when the recipient cytoplasm was from hybrid cattle versus the two parental breeds, the overall cleavage rate was indistinguishable among breeds. At Day 8, the blastocyst rate from the cleaved embryos (51% versus 37% and 27%), the total number of cells per blastocyst (135+/-4.1 versus 116+/-3.6 and 101+/-4.2), and the percentage of Grade-A (excellent quality) blastocysts (54% versus 42% and 29%) in the hybrid group were all higher than that of Holstein and Yellow groups. Furthermore, the proportion of blastocysts obtained at Day 7 (as a percentage of the total number of blastocysts) was greater in the hybrid group than in Holstein and Yellow groups (89% versus 71% and 63%). In conclusion, the use of F1 hybrid oocytes as recipient cytoplasm significantly improved in vitro development of cloned bovine embryos relative to oocytes derived from the parental lines.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0093-691X
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
64
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1263-72
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Improving in vitro development of cloned bovine embryos with hybrid (Holstein-Chinese Yellow) recipient oocytes recovered by ovum pick up.
pubmed:affiliation
Shanghai Institute of Medical Genetics, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai 20040, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't