Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)

In long-day breeders like horses, the length of nocturnal melatonin secretion is the main messenger of photoperiod. Previous studies have shown that the nocturnal jugular melatonin concentration is lower in horses, than in mules but is unknown in donkeys. The aim of this study was to estimate the in...

ver descrição completa

Detalhes bibliográficos
Autores: Guillaume, Daniel, Zarazaga Garcés, Luis Ángel, Malpaux, Benoît, Chemineau, Phileppe
Formato: artículo
Fecha de publicación:2006
País:España
Recursos:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/6387
Acesso em linha:http://hdl.handle.net/10272/6387
Access Level:acceso abierto
Palavra-chave:Melatonin
Equine species
Genetic
Photoperiod
id ES_efcefab0e2a13b5119aa2076755c7e5d
oai_identifier_str oai:ariasmontano.uhu.es:10272/6387
network_acronym_str ES
network_name_str España
repository_id_str
spelling Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)Guillaume, DanielZarazaga Garcés, Luis ÁngelMalpaux, BenoîtChemineau, PhileppeMelatoninEquine speciesGeneticPhotoperiodIn long-day breeders like horses, the length of nocturnal melatonin secretion is the main messenger of photoperiod. Previous studies have shown that the nocturnal jugular melatonin concentration is lower in horses, than in mules but is unknown in donkeys. The aim of this study was to estimate the inter-animal variability of plasma melatonin concentration in domestic mares and to compare this concentration with those observed in domestic jennies and in their hybrid mules. In the autumn, blood samples were collected at 22 h, 23 h, 0 h and 1 h during 2 nights at 3 weeks intervals, in 110 pony mares, 10 jennies and 6 mules maintained under natural photoperiod. Melatonin was assayed by a validated RIAmethod. The statistical analysis of themeasures was done with a specific unbalanced analysis of variance model. The effect of species and individuals (nested under species) was highly significant. The mean melatonin concentration was 24 pg.mL−1 in mares and was significantly lower than in jennies and in mules which were 90 pg.mL−1 and 169 pg.mL−1 respectively. The melatonin plasma concentration was higher in jennies than in mares. These results suggest that the melatonin concentration is genetically determined.Institut National de la Recherche Agronomique (INRA)20062006-01-0120062006-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/6387reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/63872026-06-02T14:58:11Z
dc.title.none.fl_str_mv Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
title Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
spellingShingle Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
Guillaume, Daniel
Melatonin
Equine species
Genetic
Photoperiod
title_short Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
title_full Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
title_fullStr Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
title_full_unstemmed Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
title_sort Variability of plasma melatonin level in pony mares (Equus caballus), comparison with the hybrid : mules and with jennies (Equus asinus)
dc.creator.none.fl_str_mv Guillaume, Daniel
Zarazaga Garcés, Luis Ángel
Malpaux, Benoît
Chemineau, Phileppe
author Guillaume, Daniel
author_facet Guillaume, Daniel
Zarazaga Garcés, Luis Ángel
Malpaux, Benoît
Chemineau, Phileppe
author_role author
author2 Zarazaga Garcés, Luis Ángel
Malpaux, Benoît
Chemineau, Phileppe
author2_role author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Melatonin
Equine species
Genetic
Photoperiod
topic Melatonin
Equine species
Genetic
Photoperiod
description In long-day breeders like horses, the length of nocturnal melatonin secretion is the main messenger of photoperiod. Previous studies have shown that the nocturnal jugular melatonin concentration is lower in horses, than in mules but is unknown in donkeys. The aim of this study was to estimate the inter-animal variability of plasma melatonin concentration in domestic mares and to compare this concentration with those observed in domestic jennies and in their hybrid mules. In the autumn, blood samples were collected at 22 h, 23 h, 0 h and 1 h during 2 nights at 3 weeks intervals, in 110 pony mares, 10 jennies and 6 mules maintained under natural photoperiod. Melatonin was assayed by a validated RIAmethod. The statistical analysis of themeasures was done with a specific unbalanced analysis of variance model. The effect of species and individuals (nested under species) was highly significant. The mean melatonin concentration was 24 pg.mL−1 in mares and was significantly lower than in jennies and in mules which were 90 pg.mL−1 and 169 pg.mL−1 respectively. The melatonin plasma concentration was higher in jennies than in mares. These results suggest that the melatonin concentration is genetically determined.
publishDate 2006
dc.date.none.fl_str_mv 2006
2006-01-01
2006
2006-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/6387
url http://hdl.handle.net/10272/6387
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institut National de la Recherche Agronomique (INRA)
publisher.none.fl_str_mv Institut National de la Recherche Agronomique (INRA)
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869423898139820032
score 15,812455

Registos relacionados