Different estrus induction protocols and fixed time artificial insemination during the anoestrous period in non-lactating Kivircik ewes

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DOI: https://doi.org/10.12681/jhvms.16429
I. DOGAN
Uludag University, Veterinary Faculty, Department of Reproduction and Artificial Insemination
Z. NUR
Uludag University, Veterinary Faculty, Department of Reproduction and Artificial Insemination
B. KILINC
Uludag University, Institute of Health Science
Abstract

The efficiency of medroxyprogesterone acetate (MAP) sponges or norgestomet ear implants (half or entire) for synchronizing and inducing the estrous cycle in non-lactating Kivircik ewes was investigated during the natural non-breeding period. Ewes were treated for 11 days either with 60 mg MAP sponges (group 1, n=27) or with 1.5 mg norgestomet (group 2, n=25) or with 3 mg norgestomet (group 3, n=27) ear implants. In addition, each ewe received an intramuscular injection of 500 IU of equine chorionic gonadotropin (eCG) and 125 μg cloprostenol (PGF2α), 48 h prior to progestagen removal. Double Cervical Artificial Insemination (AI) with diluted fresh semen was performed at a fixed time (36 and 48 h) following progestagen withdrawal. Mean values for estrous detection rates at the first 12 ± 6 h and within 72 h, the time from progestagen removal to the onset of estrous, the duration of the induced estrous and pregnancy rate were found to be 46.8%, 86.1%, 26.1 ± 7.3 h, 27.0 ± 10.7 h and 27.8%, respectively. There were significant differences between groups 2 and 3 in the time of induced estrous onset (P<0.05). These results indicate that, each of the three protocols was equally efficient in inducing and synchronizing estrus in non-lactating Kivircik ewes during the natural non-breeding period.

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Riferimenti bibliografici
Allison AJ, Robinson TJ (1970) The effect of does level of intravaginal progestagen on sperm transport, fertilization and lambing in the cyclic Merino ewe. J Reprod Fertil 22: 515-531.
Ataman MB, Akoz M, Findik M, Saban E (2009) Gecis donemi basindaki Akkaraman melezi koyunlarda farkli dozda flourogestene acetate, norgestomet ve PGF2α ile senkronize ostruslerin uyarilmasi. Kafkas Univ Vet Fak Derg 15: 801-805.
Awel H, Eshetu L, Tadesse G, Birhanu A, Khar SK (2009) Estrus synchronization in sheep with synthetic progestagens. Trop Anim Health Prod 41: 1521-1524.
Bartlewski PM, Baby TE, Giffin JL (2011) Reproductive cycles in sheep. Anim Reprod Sci 124: 259-268.
Blaschi W, Lunardelli PA, Marinho LSR, Max MC, Santos GMG, Silva-Santos KC, Melo-Sterza FA, Baldassarre H, Rigo TR, Seneda MM (2014) Effect of progestagen exposure duration on estrus synchronization and conception rates of crossbreed ewes undergoing fixed time artificial insemination. J Vet Sci 15: 433-437.
Cardwell BE, Fitch GQ, Geisert RD (1998) Ultrasonic evaluation for the time of ovulation in ewes treated with norgestomet and norgestomet followed by pregnant mare’s serum gonadotropin. J Anim Sci 76:2235-2238.
Das GK, Naqvi SMK, Gulyani R, Pareek SP, Mittal JP (2000) Effect of two doses of progesterone on estrus response and fertility in acycling crossbred Bharat Merino ewes in a semi-arid tropical environment Small Rumin Res 37: 159-163.
Dogan I, Nur Z (2006) Different estrous induction methods during the non-breeding season in Kivircik ewes. Vet Med-Czech 51: 133-138.
Dogan I, Nur Z, Gunay U, Sagirkaya H, Soylu MK, Sonmez C (2005) Estrous synchronization during the natural breeding season in Anatolian Black does. Vet Med-Czech 50: 33-38.
Garoussi MT, Farzaneh N, Gallehdar E, Mohri M (2012) Reproductive performance in out-of-breeding season of fatty ewes using implant norgestomet with or without PMSG. Trop Anim Health Prod 44: 965-968.
Gokcen H, Soylu MK, Dogan I (2000) Sivi azotta dondurulan koc spermasinin spermatolojik ozellikleri ve degisik yöntemlerle tohumlamada kullanılmasi uzerine arastırmalar. Turk J Vet Anim Sci 24: 539-544.
Gordon I (1999) Controlled Reproduction in Sheep & Goats. CABI Publishing, New York.
Hashemi M, Safdarian M, Kafi M (2006) Estrous response to synchronization of estrus using different progesterone treatments outside the natural breeding season in ewes. Small Rumin Res 65: 279-283.
Instat (1990-1993): Anon. Grophpad instat copyright (c) Grophpad software. Keisler DH, Buckrell BC (1997) Breeding strategies. In: Current Therapy in Large Animal Theriogenology. WB Saunders & Co., Philadelphia: pp 603-611.
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 á la eCG utilisée dans le traitement de I’induction d’ovulation chez la chèvre et la brebis. Gynecol Obstet Fertil 31: 766-769.
Menchaca A, Rubianes E (2004) New treatments associated with timed artificial insemination in small ruminants. Reprod Fertil Dev 16: 403-413.
Morand-Fehr P, Hervieu J, Santucc P (1989) Notation de I’etat corporel: a vos stylos. La Chevre 175: 39-42.
Mylne MJA, Hunton JR, Buckrell BC, Marsh DJ (1997) Artificial insemination of sheep. In: Current Therapy in Large Animal Theriogenology. WB Saunders & Co., Philadelphia: pp 585-594.
Scaramuzzi RJ, Martin GB (1984) Pharmacological agents for manipulating oestrus and ovulation in the ewe. In: Reproduction in Sheep. Cambridge University Press, New York: pp 316-325.
Simonetti L, Blanco MR, Gardón JC (2000) Estrus synchronization in ewes treated with sponges impregnated with different doses of medroxyprogesterone acetate. Small Rumin Res 38: 243-247.
Ungerfeld R, Rubianes E (1999) Estrus response to the ram effect in Corriedale ewes primed with medroxyprogesterone during the breeding season. Small Rumin Res 32: 89-91.
Ungerfeld R, Rubianes E (2002) Short term primings with different progestogen intravaginal devices (MAP, FGA, and CIDR) for eCG-estrous induction in anestrus ewes. Small Rumin Res 46: 63-66.
Uslu BA, Tasal I, Gulyuz F, Sendag S, Ucar O, Goericke-Pesch S, Wehrend A (2012) Effects of oestrus synchronisation using melatonin and norgestomet implants followed by eCG injection upon reproductive traits of fat-tailed Morkaraman ewes during suckling, anoestrus season. Small Rumin Res 108: 102-106.
Ustuner B, Gunay U, Nur Z, Ustuner H (2007) Effects of long and shortterm progestagen treatments combined with PMSG on oestrus synchronization and fertility in Awassi ewes during the breeding season. Acta Vet Brno 76: 391-397.
Wildeus S (2000) Current concepts in synchronization of estrus: Sheep and goats, J Anim Sci 77: 1-14.
Zarkawi M, Al-Merestani MR, Wardeh MF (1999) Induction of synchronized oestrous and early pregnancy diagnosis in Syrian Awassi ewes, outside the breeding season. Small Rumin Res 33: 99-102.
Zeleke M, Greyling JPC, Schwalbach LMJ, Muller T, Erasmus JA (2005) Effect of progestagen and PMSG on oestrous synchronization and fertility in Dorper ewes during the transition period. Small Rumin Res 56: 47-53.
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