Linked Life Data

7431339

Source:http://linkedlifedata.com/resource/pubmed/id/7431339

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1981-1-29
pubmed:abstractText
Seven Hereford cows with single calves were bled by jugular venepuncture, daily from parturition until 63-79 days post partum; 6 of the cows were also bled through jugular cannulae every 15 min for 8 h every 10 days. The average post-partum interval to first oestrus was 59.8 +/- 3.7 days for 5 of the cows. In cows returning to oestrus, plasma concentrations of progesterone were low until 55.5 +/- 3.0 days post partum, rose to exceed 0.5 ng/ml plasma for 4.0 +/- 0.4 days, declined for 5.0 +/- 0.5 days and then rose again to normal luteal-phase levels. First oestrus preceded the initial rise in progesterone in 1 cow and followed it is 4. Ovarian palpation revealed considerable follicular development before the initial rise in progesterone, but no clearly discernable corpus luteum until normal luteal-phase progesterone levels were detected. Plasma concentrations of oestradiol-17 beta fell after parturition and, although very variable, showed no apparent trend thereafter. Plasma concentrations of LH varied in an episodic manner, with an apparent increase in frequency and magnitude of peaks up to 10-33 days before the first elevation in plasma progesterone. Subsequently there was little change, except for a decline in peak LH concentrations after the initial elevation in plasma progesterone.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0022-4251
pubmed:author
pubmed:issnType
Print
pubmed:volume
60
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
301-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1980
pubmed:articleTitle
Some endocrine changes associated with the post-partum period of the suckling beef cow.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't