Academic Journal
Follicle-stimulating hormone to substitute equine chorionic gonadotropin in the synchronization of ovulation in Santa Inês ewes
| العنوان: | Follicle-stimulating hormone to substitute equine chorionic gonadotropin in the synchronization of ovulation in Santa Inês ewes |
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| المؤلفون: | Bianor Matias Cardoso Neto, Larissa Pires Barbosa, Cristiane da Silva Aguiar, Rosiléia Silva Souza, Ana Lúcia Almeida Santana, Claudinéia Silva Mendes, Patrícia Alves Dutra, Meiby Carneiro de Paula Leite |
| المصدر: | Revista Brasileira de Zootecnia, Vol 41, Iss 3, Pp 603-606 (2012) |
| بيانات النشر: | Sociedade Brasileira de Zootecnia, 2012. |
| سنة النشر: | 2012 |
| المجموعة: | LCC:Animal culture |
| مصطلحات موضوعية: | estrus, follicular dynamics, real-time ultrasound, Animal culture, SF1-1100 |
| الوصف: | The substitution of equine chorionic gonadotropin (eCG) by follicle-stimulating hormone (FSH) in protocols for synchronization of ovulation in Santa Inês ewes was assessed. Ten females were submitted to the insertion of intravaginal sponges containing 60 mg medroxyprogesterone acetate for 10 days; after this period sponges were withdrawn and the animals were randomly divided into two groups. Group 1 (n = 5): intramuscular injection of 0.5 mL d-cloprostenol and 300 UI eCG; Group 2 (n = 5): intramuscular injection of 0.5 mL d-cloprostenol and 20 mg FSH. Interval between sponge withdrawal and estrus beginning was 27.7 h and 35.9 h for eCG and FSH, respectively. Interval between sponge withdrawal and the end of estrus was 55.8 h for eCG treatment and 55.6 h for FSH treatment. Estrus length was 29.3 h and 19.6 h, for eCG and FSH treatments, respectively. The biggest follicle and the second in size measured 0.74 cm and 0.54 cm for eCG treatment, whereas for the FSH treatment they measured 0.73 and 0.50 cm. The interval between the beginning of estrus and ovulation was similar within all groups: 21.0 h for eCG treated ewes and 25.2 h for the ones treated with FSH. Ewes treated with eCG presented an interval of 47.5 h between sponge withdrawal and ovulation, while the ones treated with FSH presented a 61.1 h interval. Ovulation occurred 8.3 h before the end of estrus in the eCG group. On the other hand, ewes treated with FSH ovulated 5.5 h after the end of estrus. Estrus and ovulation were efficiently synchronized in Santa Inês ewes by using long-term progestogen protocol associated to the administration of 20 mg FSH, along with Prostaglandin F2α (PGF2α) at the moment of sponge withdrawal, thus substituting the use of eCG. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Spanish; Castilian Portuguese |
| تدمد: | 1516-3598 1806-9290 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300018; https://doaj.org/toc/1516-3598; https://doaj.org/toc/1806-9290 |
| DOI: | 10.1590/S1516-35982012000300018 |
| URL الوصول: | https://doaj.org/article/1bd541374a7f46eeb6f272b6692519fa |
| رقم الانضمام: | edsdoj.1bd541374a7f46eeb6f272b6692519fa |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 15163598 18069290 |
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| DOI: | 10.1590/S1516-35982012000300018 |