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dc.contributorMelesse, Aberraen_US
dc.contributorPorcu, Cristianen_US
dc.contributorGetachew, Tesfayeen_US
dc.contributorHaile, Aynalemen_US
dc.contributorRouatbi, Mariemen_US
dc.contributorAbate, Zelalemen_US
dc.contributorZeleke, Mulukenen_US
dc.contributorRischkowsky, Barbaraen_US
dc.contributorMwacharo, Joramen_US
dc.contributorRekik, Mouraden_US
dc.creatorDolebo, Asraten_US
dc.identifier.citationAsrat Dolebo, Aberra Melesse, Cristian Porcu, Tesfaye Getachew, Aynalem Haile, Mariem Rouatbi, Zelalem Abate, Muluken Zeleke, Barbara Rischkowsky, Joram Mwacharo, Mourad Rekik. (27/5/2020). Increased number of large non-atretic follicles and codominance effects account for high litter sizes in Bonga sheep. Animal science journal, 91 (1).en_US
dc.description.abstractTo understand the ovarian basis for prolificacy of Bonga sheep, a total of 31 ewes were selected based on litter size (LS) records and divided into two groups: High Prolificacy (HP) (n = 20) with LS ≥ 2 and Low Prolificacy (LP) (n = 11) with LS = 1. At a synchronized estrus, follicular dynamics were determined using transrectal ultrasonography. Plasma estradiol concentrations were also monitored. In total 27 ewes were observed in estrus being 9/11 LP (82%) and 18/20 HP (90%). On the day of estrus (day 0), the mean number of large follicles was higher (p < .05) in HP (1.78 ± 0.19) than in LP (1.0 ± 0.28) ewes. Prior to estrus, more (p < .05) medium follicles were visible for HP compared to LP ewes. Plasma estradiol concentrations were higher in HP compared to LP ewes (18.91 ± 0.41 vs. 14.51 ± 0.65 pg/ml; p < .05) and similarly was ovulation number (2.3 ± 0.15 vs. 1.28 ± 0. 14; p < .05). Higher ovulation rates and litter size in Bonga sheep are evidenced by the previous presence of more large follicles and the existence of co-dominance effects as most likely medium follicles are selected to ovulate.en_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceAnimal science journal;91,(2020)en_US
dc.subjectovulation rateen_US
dc.subjectbonga sheepen_US
dc.subjectlittle sizeen_US
dc.titleIncreased number of large non-atretic follicles and codominance effects account for high litter sizes in Bonga sheepen_US
dc.typeJournal Articleen_US
cg.creator.idGetachew, Tesfaye: 0000-0002-0544-6314en_US
cg.creator.idHaile, Aynalem: 0000-0001-5914-0487en_US
cg.creator.idRischkowsky, Barbara: 0000-0002-0035-471Xen_US
cg.creator.idMwacharo, Joram: 0000-0001-6981-8140en_US
cg.creator.idRekik, Mourad: 0000-0001-7455-2017en_US
cg.contributor.centerHawassa University - HU, Ethiopiaen_US
cg.contributor.centerUniversity of Sassari - UNISSen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerNational Agronomic Institute of Tunisia - INATen_US
cg.contributor.centerBonga Agricultural Research Center - BARCen_US
cg.contributor.crpCGIAR Research Program on Livestock Agri-Food Systems - LAFSen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionEastern Africaen_US
dc.identifier.statusTimeless limited accessen_US

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