Different estrous induction methods during the non-breeding season in Kivircik ewes
The efficiency of medroxyprogesterone acetate (MAP) sponges in combination with either pregnant mare serum gonadotrophin (PMSG) or cloprostenol (PGF2α) for inducing and synchronizing the estrous cycle in non-lactating Kivircik ewes was investigated during the natural non-breeding season. All ewes (n...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2006-04-01
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| Series: | Veterinární Medicína |
| Subjects: | |
| Online Access: | https://vetmed.agriculturejournals.cz/artkey/vet-200604-0002_different-estrous-induction-methods-during-the-non-breeding-season-in-kivircik-ewes.php |
| _version_ | 1797897728184811520 |
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| author | I. Dogan Z. Nur |
| author_facet | I. Dogan Z. Nur |
| author_sort | I. Dogan |
| collection | DOAJ |
| description | The efficiency of medroxyprogesterone acetate (MAP) sponges in combination with either pregnant mare serum gonadotrophin (PMSG) or cloprostenol (PGF2α) for inducing and synchronizing the estrous cycle in non-lactating Kivircik ewes was investigated during the natural non-breeding season. All ewes (n = 69) were treated with 60 mg MAP sponges for 12 days. In addition, each ewe received an intramuscular injection of either 1.5 ml sterile saline solution (n = 18); 125 μg PGF2α (n = 14); 500 IU PMSG (n = 18) or 500 IU PMSG and 125 μg PGF2α (n = 19), 48 h before the sponge removal. Cervical artificial insemination (AI) with diluted fresh semen was performed at a fixed time (48 and 60 h) following progestagen withdrawal. The different groups estrous response for the first 24 ± 6 h and within 120 h, time to onset and duration of the induced estrous, and pregnancy rate was found to be 36.2%, 81.6%, 41.7 ± 2.3 h, 29.6 ± 1.5 h, and 54.5%, respectively. There were significant differences between groups MAP and MAP/PGF2α and their with the two latter groups (MAP/PMSG, MAP/PMSG/PGF2α) in terms of the onset of induced estrous (P < 0.05) and between groups MAP and MAP/PGF2α in terms of the duration of induced estrous (P < 0.05) and between the first two groups (MAP, MAP/PGF2α) and the latter two groups (MAP/PMSG, MAP/PMSG/PGF2α) in terms of estrous response at the first 24 ± 6 h (P < 0.05). These results indicate that, the use of MAP/PMSG, rather than MAP or MAP/PGF2α, was effective in the attainment of early and compact induction and synchronization of estrous in non-lactating Kivircik ewes during the natural non-breeding season. |
| first_indexed | 2024-04-10T08:01:53Z |
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| id | doaj.art-6f7313c65c1349378be717ed3c35f804 |
| institution | Directory Open Access Journal |
| issn | 0375-8427 1805-9392 |
| language | English |
| last_indexed | 2024-04-10T08:01:53Z |
| publishDate | 2006-04-01 |
| publisher | Czech Academy of Agricultural Sciences |
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| series | Veterinární Medicína |
| spelling | doaj.art-6f7313c65c1349378be717ed3c35f8042023-02-23T03:49:21ZengCzech Academy of Agricultural SciencesVeterinární Medicína0375-84271805-93922006-04-0151413313810.17221/5532-VETMEDvet-200604-0002Different estrous induction methods during the non-breeding season in Kivircik ewesI. Dogan0Z. Nur1Department of Reproduction and Artificial Insemination, Veterinary Faculty, Uludag University, Gorukle/Bursa, TurkeyDepartment of Reproduction and Artificial Insemination, Veterinary Faculty, Uludag University, Gorukle/Bursa, TurkeyThe efficiency of medroxyprogesterone acetate (MAP) sponges in combination with either pregnant mare serum gonadotrophin (PMSG) or cloprostenol (PGF2α) for inducing and synchronizing the estrous cycle in non-lactating Kivircik ewes was investigated during the natural non-breeding season. All ewes (n = 69) were treated with 60 mg MAP sponges for 12 days. In addition, each ewe received an intramuscular injection of either 1.5 ml sterile saline solution (n = 18); 125 μg PGF2α (n = 14); 500 IU PMSG (n = 18) or 500 IU PMSG and 125 μg PGF2α (n = 19), 48 h before the sponge removal. Cervical artificial insemination (AI) with diluted fresh semen was performed at a fixed time (48 and 60 h) following progestagen withdrawal. The different groups estrous response for the first 24 ± 6 h and within 120 h, time to onset and duration of the induced estrous, and pregnancy rate was found to be 36.2%, 81.6%, 41.7 ± 2.3 h, 29.6 ± 1.5 h, and 54.5%, respectively. There were significant differences between groups MAP and MAP/PGF2α and their with the two latter groups (MAP/PMSG, MAP/PMSG/PGF2α) in terms of the onset of induced estrous (P < 0.05) and between groups MAP and MAP/PGF2α in terms of the duration of induced estrous (P < 0.05) and between the first two groups (MAP, MAP/PGF2α) and the latter two groups (MAP/PMSG, MAP/PMSG/PGF2α) in terms of estrous response at the first 24 ± 6 h (P < 0.05). These results indicate that, the use of MAP/PMSG, rather than MAP or MAP/PGF2α, was effective in the attainment of early and compact induction and synchronization of estrous in non-lactating Kivircik ewes during the natural non-breeding season.https://vetmed.agriculturejournals.cz/artkey/vet-200604-0002_different-estrous-induction-methods-during-the-non-breeding-season-in-kivircik-ewes.phpewesanestrouscloprostenolpmsgmap |
| spellingShingle | I. Dogan Z. Nur Different estrous induction methods during the non-breeding season in Kivircik ewes Veterinární Medicína ewes anestrous cloprostenol pmsg map |
| title | Different estrous induction methods during the non-breeding season in Kivircik ewes |
| title_full | Different estrous induction methods during the non-breeding season in Kivircik ewes |
| title_fullStr | Different estrous induction methods during the non-breeding season in Kivircik ewes |
| title_full_unstemmed | Different estrous induction methods during the non-breeding season in Kivircik ewes |
| title_short | Different estrous induction methods during the non-breeding season in Kivircik ewes |
| title_sort | different estrous induction methods during the non breeding season in kivircik ewes |
| topic | ewes anestrous cloprostenol pmsg map |
| url | https://vetmed.agriculturejournals.cz/artkey/vet-200604-0002_different-estrous-induction-methods-during-the-non-breeding-season-in-kivircik-ewes.php |
| work_keys_str_mv | AT idogan differentestrousinductionmethodsduringthenonbreedingseasoninkivircikewes AT znur differentestrousinductionmethodsduringthenonbreedingseasoninkivircikewes |