GnRH and prostaglandin- based synchronization protocols as alternatives to progestogen- based treatments in sheep

Simple item page
cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationInternational Center for Agricultural Research in the Dry Areasen
cg.contributor.affiliationEcole Nationale de Medecine Veterinaire, Tunisiaen
cg.contributor.affiliationInstitut National de la Recherche Agronomique de Tunisieen
cg.contributor.affiliationDebre Berhan Agricultural Research Center, Ethiopiaen
cg.contributor.crpLivestock and Fish
cg.creator.identifierMourad Rekik: 0000-0001-7455-2017
cg.creator.identifierAynalem: 0000-0001-5914-0487
cg.creator.identifierBarbara Rischkowsky: 0000-0002-0035-471X
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1111/rda.12761en
cg.isijournalISI Journalen
cg.issn1439-0531en
cg.issue6en
cg.journalReproduction in Domestic Animalsen
cg.subject.ilriGENETICSen
cg.subject.ilriANIMAL BREEDINGen
cg.subject.ilriLIVESTOCKen
cg.subject.ilriSHEEPen
cg.subject.ilriSMALL RUMINANTSen
cg.volume51en
dc.contributor.authorRekik, Mouraden
dc.contributor.authorHaile, Aynalemen
dc.contributor.authorAbebe, A.en
dc.contributor.authorMuluneh, D.en
dc.contributor.authorGoshme, Shenkuteen
dc.contributor.authorBen Salem, I.en
dc.contributor.authorHilali, M. El-Dineen
dc.contributor.authorLassoued, N.en
dc.contributor.authorChanyalew, Y.en
dc.contributor.authorRischkowsky, Barbara A.en
dc.date.accessioned2016-09-02T09:52:34Zen
dc.date.available2016-09-02T09:52:34Zen
dc.identifier.urihttps://hdl.handle.net/10568/76910
dc.titleGnRH and prostaglandin- based synchronization protocols as alternatives to progestogen- based treatments in sheepen
dcterms.abstractThe study investigated, for cycling sheep, synchronizing protocols simultaneously to the standard “P” protocol using progestogens priming with intravaginal devices and gonadotropin. In November 2014, 90 adult Menz ewes were assigned to either the “P” protocol, “PGF” treatment where oestrus and ovulation were synchronized using two injections of prostaglandin 11 days apart or a “GnRH” treatment where the ewes had their oestrus and ovulation synchronized with GnRH (day 0)–prostaglandin (day 6)–GnRH (day 9) sequence. The ewes were naturally mated at the induced oestrus and the following 36 days. Plasma progesterone revealed that 92% of the ewes were ovulating before synchronization and all, except one, ovulated in response to the applied treatments. All “P” ewes exhibited oestrus during the 96‐hr period after the end of the treatments in comparison with only 79.3% and 73.3% for “PGF” and “GnRH” ewes, respectively (p < .05). Onset and duration of oestrus were affected by the hormonal treatment (p < .05); “GnRH” ewes showed oestrus earliest and had the shortest oestrous duration. Lambing rate from mating at the induced oestrus was lower for “P” than for “PGF” ewes (55.6% and 79.3%, respectively; p < .05). The same trait was also lower for “P” than for “PGF” and “GnRH” ewes (70.4%, 89.7% and 86.7%, respectively; p < .05) following the 36‐day mating period. Prostaglandin and GnRH analogue‐based protocols are promising alternatives for both controlled natural mating and fixed insemination of Menz sheep after the rainy season when most animals are spontaneously cycling.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2016-08-26
dcterms.bibliographicCitationRekik, M., Haile, A., Abebe, A., Muluneh, D., Goshme, S., Ben Salem, I., Hilali, M. El-Dine., Lassoued, N., Chanyalew, Y. and Rischkowsky, B. 2016. GnRH and prostaglandin-based synchronization protocols as alternatives to progestogen-based treatments in sheep. Reproduction in Domestic Animals. 51(6): 924-929.en
dcterms.extentp. 924-929en
dcterms.issued2016-12
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectprostaglandinsen
dcterms.subjectsynchronizationen
dcterms.subjectsheepen
dcterms.typeJournal Article

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.89 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ICARDA Articles in Journals
Livestock Fish Flagship: Animal Genetics