Effects of melatonin treatment on follicular development and oocyte quality in Chios ewes — Short communication

Theodora Tsiligianni; Irene Valasi; Sándor Cseh; Emmanuel Vainas; Vera Faigl; Fotini Samartzi; Thomas Papanikolaou; Eleni Dovolou; Georgios Amiridis

doi:10.1556/avet.57.2009.2.13

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Acta Veterinaria Hungarica

Volume/Issue:: Volume 57: Issue 2

Effects of melatonin treatment on follicular development and oocyte quality in Chios ewes — Short communication

Authors:

Theodora Tsiligianni

Theodora Tsiligianni

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Irene Valasi

Irene Valasi University of Thessaly Clinic of Obstetrics and Reproduction, Veterinary Faculty 224 Trikalon str. 43100 Karditsa Greece

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Sándor Cseh

Sándor Cseh Szent István University Faculty of Veterinary Science Budapest Hungary

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Emmanuel Vainas

Emmanuel Vainas NAGREF Thessaloniki Greece

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Vera Faigl

Vera Faigl Szent István University Faculty of Veterinary Science Budapest Hungary

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Fotini Samartzi

Fotini Samartzi NAGREF Thessaloniki Greece

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Thomas Papanikolaou

Thomas Papanikolaou University of Thessaly Clinic of Obstetrics and Reproduction, Veterinary Faculty 224 Trikalon str. 43100 Karditsa Greece

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Eleni Dovolou

Eleni Dovolou University of Thessaly Clinic of Obstetrics and Reproduction, Veterinary Faculty 224 Trikalon str. 43100 Karditsa Greece

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Georgios Amiridis

Georgios Amiridis University of Thessaly Clinic of Obstetrics and Reproduction, Veterinary Faculty 224 Trikalon str. 43100 Karditsa Greece

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Pages:: 331–335

Online Publication Date:: 07 Jul 2009

Publication Date:: 01 Jun 2009

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/avet.57.2009.2.13

Keywords:: Melatonin; oocyte; embryo; OPU; sheep

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Follicular development and oocyte quality were assessed by laparoscopic observation and in vitro fertilisation, respectively, in melatonin-treated (Group M) and control (Group C) anoestrous Chios ewes (n = 10 in each group). Fourteen days after melatonin insertion, all ewes had laparoscopic evaluation of the follicular population followed by oocyte pick-up (OPU); on day 22 intravaginal progestagen sponges were inserted for 14 days. Two days after sponge removal the follicular population was re-evaluated and a second follicular aspiration was performed. Collected oocytes from the second OPU underwent in vitro maturation, fertilisation and culture. The number of large follicles was higher in Group M than in the control ewes during the first OPU and tended to be so (P = 0.06) at the second. Morphologically, oocytes collected from controls were of better quality than those from Group M; however, more oocytes collected from melatonintreated animals fertilised and developed in vitro . These results indicate that melatonin is a potent regulator of follicular development and oocyte competence during the anoestrous period of the ewe.

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Acta Veterinaria Hungarica

Print ISSN:: 0236-6290

Online ISSN:: 1588-2705

Editorial Board

Mária BENKŐ (Acta Veterinaria Hungarica, Budapest, Hungary)
Gábor BODÓ (University of Veterinary Medicine, Budapest, Hungary)
Béla DÉNES (University of Veterinary Medicine, Budapest Hungary)
Edit ESZTERBAUER (Veterinary Medical Research Institute, Budapest, Hungary)
Hedvig FÉBEL (University of Veterinary Medicine, Budapest, Hungary)
László FODOR (University of Veterinary Medicine, Budapest, Hungary)
János GÁL (University of Veterinary Medicine, Budapest, Hungary)
Balázs HARRACH (Veterinary Medical Research Institute, Budapest, Hungary)
Peter MASSÁNYI (Slovak University of Agriculture in Nitra, Nitra, Slovak Republic)
Béla NAGY (Veterinary Medical Research Institute, Budapest, Hungary)
Tibor NÉMETH (University of Veterinary Medicine, Budapest, Hungary)
Zsuzsanna NEOGRÁDY (University of Veterinary Medicine, Budapest, Hungary)
Dušan PALIĆ (Ludwig Maximilian University, Munich, Germany)
Alessandra PELAGALLI (University of Naples Federico II, Naples, Italy)
Kurt PFISTER (Ludwig-Maximilians-University of Munich, Munich, Germany)
László SOLTI (University of Veterinary Medicine, Budapest, Hungary)
József SZABÓ (University of Veterinary Medicine, Budapest, Hungary)
Péter VAJDOVICH (University of Veterinary Medicine, Budapest, Hungary)
János VARGA (University of Veterinary Medicine, Budapest, Hungary)
Štefan VILČEK (University of Veterinary Medicine in Kosice, Kosice, Slovak Republic)
Károly VÖRÖS (University of Veterinary Medicine, Budapest, Hungary)
Herbert WEISSENBÖCK (University of Veterinary Medicine, Vienna, Austria)
Attila ZSARNOVSZKY (Szent István University, Gödöllő, Hungary)

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Acta Veterinaria Hungarica
Language	English
Size	A4
Year of Foundation	1951
Volumes per Year	1
Issues per Year	4
Founder	Magyar Tudományos Akadémia
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ISSN	0236-6290 (Print)
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