Document Detail


The effect of divergent selection for total plasma phosphorus in Japanese quail on fearfulness and selected blood and heart parameters.
MedLine Citation:
PMID:  9469745     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A selection experiment utilizing Japanese quail was initiated to study the genetic relationship of growth and reproduction traits. In this study, lines were selected for increased (HP line) and decreased (LP line) total plasma phosphorus at the beginning of lay. The HP and LP lines were derived from a randombred control population (R1 line) that was maintained with the selected lines to remove environmental variation over generations. During the course of selection, it was observed that blood from HP line females was more viscous than that of the LP and R1 females. In later generations of selection, mortality of females during a 120-d egg production period was higher in the HP line than in the LP and R1 lines. The purpose of this experiment was to identify possible factors contributing to the increased mortality in the HP line. Fearfulness, as measured by tonic immobility, was greater in the HP and LP lines than in the R1 line. Indirect blood pressure measurements were made near the beginning and near the end of the 120-d egg production period. No significant line differences were observed in either measurement. Weight of the heart at the end of the laying period was higher in the HP and LP lines than in the R1 line. Histological study of the hearts of the HP and R1 lines indicated significant increases in the HP line in collagen content of the coronary arteries and in myocardial fibrosis. The data suggest that the increased mortality of females of the HP line relative to the R1 line during the laying period may be related to increased fearfulness and changes in the coronary structure leading to heart abnormalities.
Authors:
D Ely; K E Nestor; W L Bacon; R A Patterson; D Smith; J W Anderson; D O Noble
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Poultry science     Volume:  77     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1998 Jan 
Date Detail:
Created Date:  1998-04-07     Completed Date:  1998-04-07     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  8-16     Citation Subset:  IM    
Affiliation:
Department of Biology, University of Akron, Ohio 44325, USA.
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Pressure / genetics*
Breeding / methods*
Collagen / analysis
Coronary Vessels / cytology
Coturnix / genetics*,  physiology
Fear*
Female
Genetic Variation*
Hematocrit
Myocardium / cytology
Oviposition / genetics*,  physiology
Phosphorus / blood*
Chemical
Reg. No./Substance:
7723-14-0/Phosphorus; 9007-34-5/Collagen

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


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