Yazar "Yurdabak, S." seçeneğine göre listele

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    Öğe
    Comparison of the effect of cronolone sponges and PMSG or cloprostenol on estrous induction in Turkish Saanen goats
    (Polska Akad Nauk, Polish Acad Sciences, Univ Warmia & Mazury Olsztyn, 2008) Dogan, I.; Konlyali, A.; Gunay, U.; Yurdabak, S.
    The efficiency of cronolone sponges in combination with either pregnant mare serum gonadotrophin (PMSG) or cloprostenol (PGF(2 alpha)) for inducing and synchronizing the estrous cycle in Turkish Saanen does was investigated during the transition from non-breeding to breeding season. All does (n=80) were treated with 20 mg cronolone sponges for I I days and divided into 4 equal groups. In addition, each doe received an intramuscular injection of either 1.5 ml sterile saline solution, 0.075 mg PGF(2 alpha) 500 IU PMSG or 500 IU PMSG and 0.075 mg PGF(2 alpha), 24 h before the sponge removal. Cervical artificial insemination (AI) with frozen-thawed semen was performed once 16 h after the detection of the first accepted mount. The total estrous response for the first 24 4 h, total estrous response within 96 h, time to onset of the induced estrus, duration of the induced estrus and pregnancy rate was found to be 75.0%, 97.5%, 31.4 +/- 1.2 h, 29.3 +/- 1.2 h, and 33.3%, respectively. There were significant differences between the first two groups and the last two groups in terms of the onset of induced estrus and estrous response at the first 24 4 h (P < 0.05). These results indicate that the use of cronolone/PMSG was more effective than cronolone/PGF(2 alpha) in the attainment of early and compact induction of estrus in Turkish Saanen does.
  • [ X ]
    Öğe
    Different estrous induction protocols during the transition period in lactating Turkish Saanen does following Al
    (De Gruyter Open Ltd, 2008) Dogan, I; Konyali, A.; Tolu, C.; Yurdabak, S.
    The objective of this study was to evaluate the duration of three progestagen treatments for estrous synchronization in lactating Turkish Saanen goats during the transitional period from anestrous. All does (n = 60) were divided into three equal groups and the estrous period of the does was synchronized using intravaginal sponges (20 mg FGA) for either 11 days (Group 1), 9 days (Group 2) or 6 days (Group 3). In addition, 24h before sponge removal (on the 10(th) day, 8(th) day and 5(th) day, respectively) each doe was injected with 0.075 mg cloprostenol (PGF(2 alpha)) and 500 IU eCG. Cervical artificial inseminations (Al) with frozen-thawed semen were performed at fixed intervals (36 and 48 h) following progestagen withdrawal. The total estrous response following the first withdrawal was 12 +/- 6 h within 66 h. Time to onset and duration of the induced estrous, and pregnancy rates were recorded to be 30.0%, 100%, 23.9 +/- 0.7 h, 29.4 +/- 1.3 h, and 28.3%, respectively. There were significant differences between Group 1 and the other groups, in terms of the onset of induced estrus (P<0.05) and estrous response for the first 12 +/- 6 h (P<0.05) and between Group 2 and Groups 1 and 3 in terms of the duration of induced estrous (P<0.05). Each of the three protocols was effective in inducting and synchronizing estrus in lactating Turkish Saanen goats.