Document Detail


Embryo survival following non-surgical embryo recovery in superovulated dairy heifers.
MedLine Citation:
PMID:  8592884     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Embryo survival following non-surgical embryo recovery was studied in 66 superovulated dairy heifers. Blood samples were collected at uterine flushing (6.5 days after a single AI), 72 h after flushing and then every 7 days until estrus or until pregnancy diagnosis by palpation per rectum. Luteolytic effect by uterine flushing was detected in three heifers 72 h following flushing (progesterone values < 1 ng/ml plasma). From the remaining animals 11 (17.5%) remained pregnant and 52 returned to estrus. In four heifers, embryo loss was registered 48 days after AI. Seven heifers developed gestation to term: five resulted in single and two in twin normal births. Progesterone concentrations in all samples from heifers in which embryo loss occurred were higher than in those with pregnancy to term. For non-pregnant heifers, the average interval between uterine flushing and the following spontaneous estrus was 16.6 +/- 1.3 days (+/- SEM). It was concluded that uterine flushing did not induce luteolysis in most heifers, and after uterine flushing, embryos remaining in the uterus were capable of developing through pregnancy to term.
Authors:
F López-Gatius
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Zentralblatt für Veterinärmedizin. Reihe A     Volume:  42     ISSN:  0514-7158     ISO Abbreviation:  Zentralbl Veterinarmed A     Publication Date:  1995 Apr 
Date Detail:
Created Date:  1996-04-03     Completed Date:  1996-04-03     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0331323     Medline TA:  Zentralbl Veterinarmed A     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  105-10     Citation Subset:  IM    
Affiliation:
Department of Animal Production, University of Lleida, Spain.
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MeSH Terms
Descriptor/Qualifier:
Animals
Cattle / physiology*
Embryo, Mammalian / physiology*
Estrus / physiology
Female
Fetal Death / veterinary*
Pregnancy
Pregnancy, Animal / physiology*
Progesterone / blood
Superovulation / physiology*
Chemical
Reg. No./Substance:
57-83-0/Progesterone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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