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Genetic variability of the pattern of night melatonin blood levels in relation to coat changes development in rabbits.
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MedLine Citation:
PMID:  15040899     Owner:  NLM     Status:  MEDLINE    
To assess the genetic variability in both the nocturnal increase pattern of melatonin concentration and photoresponsiveness in coat changes, an experiment on 422 Rex rabbits (from 23 males) raised under a constant light programme from birth was performed. The animals were sampled at 12 weeks of age, according to 4 periods over a year. Blood samples were taken 7 times during the dark phase and up to 1 h after the lighting began. Maturity of the fur was assessed at pelting. Heritability estimates of blood melatonin concentration (0.42, 0.17 and 0.11 at mid-night, 13 and 15 h after lights-out respectively) and strong genetic correlations between fur maturity and melatonin levels at the end of the dark phase (-0.64) indicates that (i) the variability of the nocturnal pattern of melatonin levels is under genetic control and (ii) the duration of the nocturnal melatonin increase is a genetic component of photoresponsiveness in coat changes.
Daniel Allain; Benoit Malpaux; François Puechal; René Gérard Thébault; Hubert De Rochambeau; Philippe Chemineau
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Genetics, selection, evolution : GSE     Volume:  36     ISSN:  0999-193X     ISO Abbreviation:  Genet. Sel. Evol.     Publication Date:    2004 Mar-Apr
Date Detail:
Created Date:  2004-03-25     Completed Date:  2004-06-16     Revised Date:  2009-06-18    
Medline Journal Info:
Nlm Unique ID:  9114088     Medline TA:  Genet Sel Evol     Country:  France    
Other Details:
Languages:  eng     Pagination:  207-16     Citation Subset:  IM    
Station d'amélioration génétique des animaux, Institut national de la recherche agronomique, BP 27, 31326 Castanet Tolosan, France.
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MeSH Terms
Circadian Rhythm / physiology*
Genetic Variation*
Hair / physiology*
Longitudinal Studies
Melatonin / blood*,  genetics
Rabbits / genetics*,  physiology
Reg. No./Substance:

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

Full Text
Journal Information
Journal ID (nlm-ta): Genet Sel Evol
ISSN: 0999-193X
ISSN: 1297-9686
Publisher: BioMed Central
Article Information
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Copyright ? 2004 INRA, EDP Sciences
Received Day: 6 Month: 6 Year: 2002
Accepted Day: 25 Month: 9 Year: 2003
collection publication date: Year: 2004
Electronic publication date: Day: 15 Month: 3 Year: 2004
Volume: 36 Issue: 2
First Page: 207 Last Page: 216
ID: 2697186
Publisher Id: 1297-9686-36-2-207
PubMed Id: 15040899
DOI: 10.1186/1297-9686-36-2-207

Genetic variability of the pattern of night melatonin blood levels in relation to coat changes development in rabbits
Daniel Allain1 Email:
Benoit Malpaux2
Fran?ois Puechal1
Ren? G?rard Th?bault3
Hubert de Rochambeau1
Philippe Chemineau2
1Station d'am?lioration g?n?tique des animaux, Institut national de la recherche agronomique, BP 27, 31326 Castanet Tolosan, France
2Physiologie de la reproduction et des comportements, neuroendocrinologie, Institut national de la recherche agronomique, 37380 Nouzilly, France
3G?n?tique animale phan?res, Le Magneraud, Institut national de la recherche agronomique, BP 56, 17700 Surg?res, France

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Article Categories:
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Keywords: rabbit, coat development, melatonin secretion, genetic variability.

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