ankara univ vet fak dergAnkara Üniversitesi Veteriner Fakültesi Dergisi1300-08611308-2817Ankara ÜniversitesiDetermination of efficient CIDR application periods in timed artificial insemination of Damascus goats during the breeding seasonDoğruerGökhanKaracaFikretKoldaş ÜrerEceCoşkunNurdanMerve KöseAyşeAteşCafer TayyarÖzcanOğuzhanSarıbayM. Kemal12312018661677212272017This research was conducted to determine the most efficient CIDR application periods in timed artificialinsemination (TAI) protocols in Damascus goats during the breeding season. Ninety-six Damascus goats were used and the animalswere randomly allocated into four equal groups. CIDR was used for 18, 12, 6 and 3 days in groups VL, L, S, and VS, respectively. 500IU of eCG and 125 mcg of cloprostenol were administered on the day of CIDR removal. The goats were timely inseminated intracervically by cooled semen 48-60 h after removal of CIDR together with 5 mcg GnRH administration. Pregnancy rates were 62.5%,79.2%, 75% and 62.5% in VL, L, S and VS groups, respectively. Abortion rates were 13.3%, 5.3%, 5.6% and 13.3%, also kidding rateswere found to be 86.6%, 94.7%, 94.4% and 86.6% in VL, L, S and VS groups, respectively. Fertility rates were 54.2%, 75%, 70.8%and 54.2% in VL, L, S and VS groups, respectively. No significant difference was observed in pregnancy rates, abortion and kiddingrates among the groups (p>0.05). As a result, CIDR has a wide range of application period in TAI protocols in Damascus goats duringthe breeding season. The short-term usage as short as 3 days, will offer high flexibility in TAI protocols of goats. Even no statisticaldifference was obtained among the groups, lower rates of fertility in VS and VL groups may provide economic loss. Further studieswith a larger number of animals are needed to clarify the questions about fertility and economic issues. CIDR goat timed artificial insemination1. Abecia JA, Forcada F, González-Bulnes A (2012):
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