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    The Effects of Long and Short Term Applications of Progestogen Containing Vaginal Sponges and Subcutaneus Implants on Fertility During Breeding Season in Damascus Goats
    (Kafkas Univ, Veteriner Fakultesi Dergisi, 2011) Ozer, Mustafa Ozcan; Dogruer, Gokhan
    This study was carried out to determine the effect of short and long term applications of fluorogestone acetate vaginal sponges and norgestomet ear implants on the fertility parameters on Damascus goats. Eightyeight multiparous goats, between 3-6 years of ages, having no fertility problem were randomly assigned to 4 groups as; long term sponge (LTS, n = 22), short term sponge (STS, n = 22), long term implants (LTI, n = 22) and short term implants (STI, n = 22). The vaginal sponges were applied for 14 days to LTS group and for 6 days to STS group. The ear implants were applied for 14 days to LTI group and for 6 days to STI group. In all groups 2 days before the implant or sponge removal 400 IU PMSG and 75 mcg Cloprostenol were injected intramuscularly. Estrous response time were found as 27.6 +/- 0.4, 27.6 +/- 0.4, 28.6 +/- 0.4 and 27.7 +/- 0.5 h after the sponge removal in the LTS, STS, LTI and STI groups, respectively. The estrous rates were detected as 95.4%, 95.4%, 95.4% as 86.3% in the LTS, STS, LTI and STI groups, respectively. The pregnancy rates were 72.7%, 68.2%, 72.7% and 68.3% in the LTS, STS, LTI and STI groups respectively. The conception rates were found to be 76.1%, 71.4%, 76.1% and 78.9% in the LTS, STS, LTI and STI groups respectively. The kidding rates were found to be 93.8%, 86.7 %, 87.5% and 93.3% in the LTS, STS, LTI and STI groups respectively. The prolificacy rates were 133%, 130%, 135% and 128% in the LTS, STS, LTI and STI groups respectively. No statistical difference were found in the estrous response time, estrous rate, pregnancy rate, conception rate, kidding rate and the prolificacy rates among the LTS, STS, LTI and STI groups (P>0.05). It was concluded that the estrous of the Damascus goats during the breeding season could be synchronized succesfully by the short or long term application of the FGA sponges and norgestomet implants with the combination of PMSG and PGF2 alpha. No difference in the fertility parameters in the short or long term application were detected. Short term applications were found as succesful as long term applications. Therefore the short term applications were found to be more useful for the flexiblity of the usage in the field conditions.