Back to Search
Start Over
Melatonin secretion during postnatal development in wild and domestic female lambs
- Source :
- Animal Reproduction Science, Animal Reproduction Science, Elsevier Masson, 2010, 119 (1-2), pp.24-30. ⟨10.1016/j.anireprosci.2009.12.006⟩, Repositorio de Resultados de Investigación del INIA, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA, INIA: Repositorio de Resultados de Investigación del INIA
- Publication Year :
- 2010
- Publisher :
- HAL CCSD, 2010.
-
Abstract
- This study examines the patterns of melatonin secretion during postnatal development in wild (mouflon; n = 7) and domestic (Spanish Merino; n = 6) female lambs under their natural photoperiod conditions. The aim was to determine whether these types of sheep which differ in the timing of puberty, also differ in the establishment of daily melatonin secretory rhythms and/or in the nocturnal plasma melatonin secretion. In addition, the time when the lambs first reached nocturnal levels of melatonin similar to adults was also evaluated. For this purpose, the melatonin secretion in lambs was compared with those of their mothers. A day/night (D/N) difference in plasma melatonin concentration was noticed as early as 1 day after birth in the Merino female lambs (D: 5.9 +/- 1.0 pg/ml compared to N: 22.0 +/- 3.3 pg/ml; p < 0.05), and by 1 week after birth in the mouflon female lambs (D: 4.9 +/- 0.3 pg/ml compared to N: 56.9 +/- 15.3 pg/ml; p < 0.05). An effect of the genotype (p < 0.05) and age (p < 0.01) was detected on mean nocturnal plasma melatonin concentrations, which were lower in the Merino than in the mouflon lambs. Night-time plasma concentration of melatonin was also high in mouflon than in Merino mothers (p < 0.05). No differences were detected between the wild genotype and the domestic one in the time when the lambs first reached nocturnal levels of melatonin similar to those of their mothers. (C) 2009 Elsevier B.V. All rights reserved.
- Subjects :
- MOUFLON
endocrine system
medicine.medical_specialty
Photoperiod
AGNELLE
Mothers
Animals, Wild
Nocturnal
Biology
Melatonin
03 medical and health sciences
0302 clinical medicine
Endocrinology
Food Animals
Merino lambs
Internal medicine
Blood plasma
medicine
Animals
Sexual Maturation
Melatonin secretion
030304 developmental biology
Wild sheep
photoperiodism
0303 health sciences
Sheep
MELATONINE
Age Factors
General Medicine
biology.organism_classification
Mouflon
Postnatal development
Animals, Newborn
Animals, Domestic
[SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies
Animal Science and Zoology
Female
Seasons
030217 neurology & neurosurgery
hormones, hormone substitutes, and hormone antagonists
medicine.drug
DEVELOPPEMENT POSTNATAL
Subjects
Details
- Language :
- English
- ISSN :
- 03784320
- Database :
- OpenAIRE
- Journal :
- Animal Reproduction Science, Animal Reproduction Science, Elsevier Masson, 2010, 119 (1-2), pp.24-30. ⟨10.1016/j.anireprosci.2009.12.006⟩, Repositorio de Resultados de Investigación del INIA, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA, INIA: Repositorio de Resultados de Investigación del INIA
- Accession number :
- edsair.doi.dedup.....5dc188ec4c0dc0b0b06a28cc36ff1435