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Effects of estrogen and prostaglandin on progesterone-delayed farrowing.
MedLine Citation:
PMID:  16726705     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Effects of estradiol benzoate and prostaglandin F(2alpha) (PGF(2alpha)) on concentrations of progesterone and estrogen in serum and the percentage of live births were determined in 21 gilts treated with exogenous progesterone in late gestation. All gilts received progesterone (25mg s.c. four times daily) from Days 108 through 113 of gestation. Gilts receiving no other treatments (controls) had elevated levels of progesterone through 1800 h on Day 114 (29.2 +/- 11.4 ng/ml) and farrowed at 115.6 +/- 0.3 d of gestation with a relatively low percentage of live births (66.8 +/- 17.3). Gilts treated with PGF(2alpha) administered at 0600 h on Day 114 had less (P<0.01) progesterone by 1800 h (7.0 +/- 1.3 ng/ml) relative to that of the controls, but they had similar gestation lengths (115.5 +/- 0.3) and percentages of live births (50.0 +/- 16.2). Administration of estradiol benzoate (10 mg) to gilts at 0600 h on Day 114 did not reduce progesterone on Day 114 or the gestation length relative to that of the control gilts, but it did increase (P<0.05) the percentage of live births (100%).
Authors:
M E Wilson; L A Edgerton; T S Stahly; G L Cromwell
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Theriogenology     Volume:  32     ISSN:  0093-691X     ISO Abbreviation:  Theriogenology     Publication Date:  1989 Oct 
Date Detail:
Created Date:  2006-05-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0421510     Medline TA:  Theriogenology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  577-83     Citation Subset:  -    
Affiliation:
Department of Animal Sciences University of Kentucky Lexington, KY 40546-0215 USA.
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