Field synchronization of Ethiopian Highland sheep for fixed time artificial insemination: improvement of conception rate with a double injection of prostaglandin at 11 days

References

• Baril G, Remy B, Leboeuf B, Beckers JF, Saumande J. 1996. Synchronization of estrus in goats: the relationship between eCG binding in plasma time of occurrence of estrus and fertility following artificial insemination. Theriogenology. 45:1553–1559. doi: 10.1016/0093-691X(96)00123-9
   Web of Science ®Google Scholar
• Berlinguer F, Gonzalez-Bulnes A, Succu S, Leoni G, Mossa F, Bebbere D, Ariznavarreta C, Treguerres JAF, Veiga-Lopez A, Naitana S. 2007. Effects of progestagens on follicular growth and oocyte developmental competence in FSH-treated ewes. Domest. Anim. Endocrinol. 32:303–314. doi: 10.1016/j.domaniend.2006.04.007
   PubMed Web of Science ®Google Scholar
• Bru C, Fantova E, Sevilla E, Quintin FJ, Alabart JL. 1995. Resultados de insemiancion artificial de las ovejas Rasa aragonea de las ganaderías de Carne Aragón, S.C.L. Influencia de la condición corporal, Proceedings of the XX Jornadas Científicas de la Sociedad Española de Ovinotecnia y Caprinotecnia, Madrid (España).
   Google Scholar
• Contreras-Solís I, Vásquez B, Díaz T, Letelier C, López Sebastian A, González Bulnes A. 2009. Efficiency of estrous synchronization in tropical sheep by combining short-interval Cloprostenol-based protocols and “male effect”. Theriogenology. 71:1018–1025. doi: 10.1016/j.theriogenology.2008.11.004
   PubMed Web of Science ®Google Scholar
• Evans G, Maxwell WMC. 1987. Insemination. In: Evans G, Maxwell WMC, editors. Salamon's artificial insemination of sheep and goats. Editorial Butterworths 2nd ed. Sydney, Australia: Publisher; p. 194 pp.
   Google Scholar
• Fairnie IJ, Wales RG, Gherardi PB. 1977. Time of ovulation, fertilisation rate, and blastocyst formation in ewes following treatment with a prostaglandin analogue (ICI 80996). Theriogenology. 8:183. doi: 10.1016/0093-691X(77)90145-5
   PubMed Web of Science ®Google Scholar
• Fierro S, Gil J, Viñoles C, Olivera-Muzante J. 2013. The use of prostaglandins in controlling estrous cycle of the ewe: a review. Theriogenology. 79:399–408. doi: 10.1016/j.theriogenology.2012.10.022
   PubMed Web of Science ®Google Scholar
• Fierro S, Viñoles C, Olivera-Muzante J. 2016. Concentrations of steroid hormones, estrous, ovarian and reproductive responses in sheep estrous synchronized with different prostaglandin-based protocols. Anim. Reprod. Sci. 167:74–82. doi: 10.1016/j.anireprosci.2016.02.009
   PubMed Web of Science ®Google Scholar
• Fierro S, Viñoles C, Olivera-Muzante J. 2017. Long term prostaglandin based-protocols improve the reproductive performance after timed artificial insemination in sheep. Theriogenology. 90:109–113. doi: 10.1016/j.theriogenology.2016.11.031
   PubMed Web of Science ®Google Scholar
• Flores-Najera MJ, Meza-Herrera CA, Echavarrıa FG, Villagomez E, Iniguez L, Salinas H, Gonzalez-Bulnes A. 2010. Influence of nutritional and socio-sexual cues upon reproductive efficiency of goats exposed to the male effect under extensive conditions. Anim. Prod. Sci. 50:897–901. doi: 10.1071/AN10030
   Google Scholar
• Getachew T, Haile A, Tibbo M, Sharma AK, Sölkner J, Wurzinger M. 2010. Herd management and breeding practices of sheep owners in a mixed crop-livestock and a pastoral system of Ethiopia. Afr. J. Agric. Res. 5:685–691.
   Google Scholar
• Gizaw S, Komen H, Hanotte O, Van Arendonk JAM. 2008. Indigenous sheep resources of Ethiopia: types, production systems. Anim. Genet. Resour. Inf. 43:25–39. doi: 10.1017/S1014233900002704
   Google Scholar
• Gizaw S, Van Arendonk JAM, Komen H, Windig JJ, Hanotte O. 2007. Population structure, genetic variation and morphological diversity in indigenous sheep of Ethiopia. Anim. Genet. 38:621–628. doi: 10.1111/j.1365-2052.2007.01659.x
   PubMed Web of Science ®Google Scholar
• Haile A, Gizaw S, Getachew T, Mueller JP, Amer P, Rekik M, Rischkowsky B. 2019. Community-based breeding programmes are a viable solution for Ethiopian small ruminant genetic improvement but require public and private investments. J. Anim. Breed. Genet. 136:319–328. doi: 10.1111/jbg.12401
   PubMed Web of Science ®Google Scholar
• Haile A, Tembely S, Anindo D, Mukasa-Mugerwa E, Rege JE, Yami A, Baker RL. 2002. Effects of breed and dietary protein supplementation on the responses to gastrointestinal nematode infections in Ethiopian sheep. Small Rumin. Res. 44:247–261. doi: 10.1016/S0921-4488(02)00080-9
   Web of Science ®Google Scholar
• Hervé V, Roy F, Bertin J, Guillou F, Maurel MC. 2004. Anti-equine chorionic gonadotropin (eCG) antibodies generated in goats treated with eCG for the induction of ovulation modulate the luteinizing hormone and follicle-stimulating hormone bioactivities of eCG differently. Endocrinology. 145:294–303. doi: 10.1210/en.2003-0595
   PubMed Web of Science ®Google Scholar
• Leyva V, Buckrell BC, Walton JS. 1998. Regulation of follicular activity and ovulation in ewes by exogenous progestogen. Theriogenology. 50:395–416. doi: 10.1016/S0093-691X(98)00148-4
   PubMed Web of Science ®Google Scholar
• Lopez-Sebastian A, Gonzalez-Bulnes A, Carrizosa JA, Urrutia B, Diaz-Delfa C, Santiago-Moreno J, Gomez-Brunet A. 2007. New estrus synchronization and artificial insemination protocol for goats based on male exposure, progesterone and cloprostenol during the non-breeding season. Theriogenology. 68:1081–1087. doi: 10.1016/j.theriogenology.2007.08.003
   PubMed Web of Science ®Google Scholar
• Manes J, Rios G, Fiorentino MA, Ungerfel R. 2016. Vaginal mucus from ewes treated with progestogen sponges affects quality of ram spermatozoa. Theriogenology. 85:856–861. doi: 10.1016/j.theriogenology.2015.10.033
   PubMed Web of Science ®Google Scholar
• Maurel MC, Roy F, Hervé V, Bertin J, Vaiman D, Cribiu E, Manfredi E, Bouvier F, Lantier I, Boue P, Guillou F. 2003. Réponse immunitaire à la eCG utilisée dans le traitement de l’induction d’ovulation chez la chèvre et la brebis. Gynécologie Obs. Fertil. 31:766–769. doi: 10.1016/S1297-9589(03)00214-5
   PubMedGoogle Scholar
• Mekuriaw Z, Assefa H, Tegegne A, Muluneh D. 2015. Estrus response and fertility of Menz and crossbred ewes to single prostaglandin injection protocol. Trop. Anim. Health Prod. 48:53–57. doi: 10.1007/s11250-015-0919-z
   PubMed Web of Science ®Google Scholar
• Mueller JP, Haile A, Getachew T, Rekik M, Rischkowsky B. 2019. Genetic progress and economic benefit of community-based breeding programs for sheep out- and upscaling options in Ethiopia. Small Rumin. Res. 177:124–132. doi: 10.1016/j.smallrumres.2019.06.025
   Web of Science ®Google Scholar
• Palacín I, Yániz JL, Fantova E, Blasco ME, Quintín-Casorrán FJ, Sevilla-Mur E, Santolaria P. 2012. Factors affecting fertility after cervical insemination with cooled semen in meat sheep. Anim. Reprod. Sci. 132:139–144. doi: 10.1016/j.anireprosci.2012.05.005
   PubMed Web of Science ®Google Scholar
• Pope WF, Cárdenas H. 2004. Sensitivity of sheep to exogenous prostaglandin F2α early in the estrous cycle. Small Rumin. Res. 55:245–248. doi: 10.1016/j.smallrumres.2004.01.004
   Web of Science ®Google Scholar
• Rekik M, Haile A, Abebe A, Muluneh D, Goshme S, Ben Salem I, Hilali ME, Lassoued N, Chanyalew Y, Rischkowsky B. 2016. GnRH and prostaglandin-based synchronization protocols as alternatives to progestogen-based treatments in sheep. Reprod. Domest. Anim. 51:924–929. doi: 10.1111/rda.12761
   PubMed Web of Science ®Google Scholar
• Russel AJF, Doney JM, Jun RG. 1969. Subjective assessment of body fat in live sheep. J. Agric. Sci. 72:451–454. doi: 10.1017/S0021859600024874
   Web of Science ®Google Scholar
• Santolaria P, Palacin I, Yaniz J. 2011. Management factors affecting fertility in sheep, artificial insemination in farm animals, Dr. Milad Manafi (Ed.), ISBN: 978-953-307-312-5, InTech, 2. Available from: http://www.intechopen.com/books/artificial-insemination-in-farm-animals/management-factors-affectingfertility-in-sheep.
   Google Scholar
• Vilariño M, Rubianes E, Menchaca A. 2011. Re-use of intravaginal progesterone devices associated with the short-term protocol for timed artificial insemination in goats. Theriogenology. 75:1195–1200. doi: 10.1016/j.theriogenology.2010.11.030
   PubMed Web of Science ®Google Scholar
• Viñoles C, Forsberg M, Banchero G, Rubianes E. 2001. Effect of long-term and short-term progestagen treatment on follicular development and pregnancy rate in cyclic ewes. Theriogenology. 55:993–1004. doi: 10.1016/S0093-691X(01)00460-5
   PubMed Web of Science ®Google Scholar