Document Detail

Assessment of vaginal impedance measurements as an indicator of oestrus in cattle.
MedLine Citation:
PMID:  7436937     Owner:  NLM     Status:  MEDLINE    
A study was made in cattle of the variation of vaginal impedance with respect to the placement of probe, time after insertion, and stages of the oestrous cycle. Impedance values were lowest and least variable when determined in the ventral sector of the vaginal fornix. Allowing the probe time to warm up improved results. Vaginal impedance declined by approximately 30% during pro-oestrus, oestrus and metoestrus when compared with dioestrus. The time at which the lowest values were reached varied between animals, in 2 cases being a day before oestrus, in another 2 on the day of oestrus, and for 1, the day after oestrus. The method described was not suitable for determining the peak of behavioural oestrus.
P D Carter; J H Dufty
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Australian veterinary journal     Volume:  56     ISSN:  0005-0423     ISO Abbreviation:  Aust. Vet. J.     Publication Date:  1980 Jul 
Date Detail:
Created Date:  1981-01-26     Completed Date:  1981-01-26     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0370616     Medline TA:  Aust Vet J     Country:  AUSTRALIA    
Other Details:
Languages:  eng     Pagination:  321-3     Citation Subset:  IM    
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MeSH Terms
Breeding / methods*
Cattle / physiology*
Electric Conductivity
Estrus Detection / methods*
Vagina / physiology*

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

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