Gül et al Greener Journal of Agricultural Sciences Vol. 6 (6), pp. 203-208, June 2016. ISSN: 2276-7770 Research Paper Manuscript Number: 052616099 (DOI: http://doi.org/10.15580/GJAS.2016.6.052616099) Applicability of different Synchronization Protocols during Breeding Season in Kilis Goats *Sabri Gül1, Mahmut Keskin1, Irfan Daşkiran2, Zühal Gündüz1 1Mustafa Kemal University, Agricultural Faculty, Department of Animal Science, Antakya-Hatay, Turkey. 2MFAL. General Directorate Agr. Research & Policies, Ankara, Turkey. Abstract The objective of this study was to determine the effects of four different oestrus synchronization protocols on some reproductive characteristics in Kilis goats. For this purpose, 75 heads of goats were used and divided into 5 groups as Progesterone (P4: intravaginal sponges with 20 mg progesterone), Progesterone + Pregnant Mare Gonadotropin Hormone (P4+PMSG: intravaginal sponges + 300 IU intramuscular injection of pregnant mare serum), single dose Prostaglandin F2 Alpha (PgF2α-I: single PgF2α intramuscular injection), double dose Prostaglandin F2 Alpha (PgF2α-II: double PgF2α intramuscular injection) with 11-days interval and Male Effect (Control). All goats were naturally – mated. At the end of the study, kidding rates of single and multiple birth types were calculated as 33.34 %, 66.66 % in P4; 40.00 %, 60.00 % in P4+PMSG; 46.67 %, 53.33 % in PgF2α-I; 46.67 %,53.33 % in PgF2α-II and 53.33 %, 46.67 % in control groups, respectively. In conclusion, it was detected that P4+PMSG application increased kids number. Key words: Kilis goat, oestrus synchronization, prostaglandin, litter size. 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