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

Theodora Tsiligianni, Irene Valasi, S. Cseh, Emmanuel Vainas, Vera Faigl, Fotini Samartzi, Thomas Papanikolaou, Eleni Dovolou, Georgios Amiridis

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)331-335
Number of pages5
JournalActa Veterinaria Hungarica
Volume57
Issue number2
DOIs
Publication statusPublished - Jun 1 2009

Fingerprint

Chios (sheep breed)
follicular development
melatonin
Melatonin
animal communication
Oocytes
ewes
oocytes
Communication
Porifera
Fertilization in Vitro
Therapeutics
progestational hormones
in vitro fertilization
Progestins
fertilization (reproduction)
Mental Competency
Population
Observation
Control Groups

Keywords

  • Embryo
  • Melatonin
  • Oocyte
  • OPU
  • Sheep

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Effects of melatonin treatment on follicular development and oocyte quality in Chios ewes - Short communication. / Tsiligianni, Theodora; Valasi, Irene; Cseh, S.; Vainas, Emmanuel; Faigl, Vera; Samartzi, Fotini; Papanikolaou, Thomas; Dovolou, Eleni; Amiridis, Georgios.

In: Acta Veterinaria Hungarica, Vol. 57, No. 2, 01.06.2009, p. 331-335.

Research output: Contribution to journalArticle

Tsiligianni, T, Valasi, I, Cseh, S, Vainas, E, Faigl, V, Samartzi, F, Papanikolaou, T, Dovolou, E & Amiridis, G 2009, 'Effects of melatonin treatment on follicular development and oocyte quality in Chios ewes - Short communication', Acta Veterinaria Hungarica, vol. 57, no. 2, pp. 331-335. https://doi.org/10.1556/AVet.57.2009.2.13
Tsiligianni, Theodora ; Valasi, Irene ; Cseh, S. ; Vainas, Emmanuel ; Faigl, Vera ; Samartzi, Fotini ; Papanikolaou, Thomas ; Dovolou, Eleni ; Amiridis, Georgios. / Effects of melatonin treatment on follicular development and oocyte quality in Chios ewes - Short communication. In: Acta Veterinaria Hungarica. 2009 ; Vol. 57, No. 2. pp. 331-335.
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