Characterization of Oestrous Induction Response, Oestrous Duration, Fecundity and Fertility in Awassi Ewes During the Non-breeding Season Utilizing both CIDR and Intravaginal Sponge Treatments
| Autor: | İbrahim Küçükaslan, Nihat Özyurtlu, Yunus Çetin |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Estrous cycle
medicine.medical_specialty Pregnancy media_common.quotation_subject Domestic sheep reproduction Fertility Pregnant Mare Serum Gonadotropin Biology Fecundity medicine.disease Awassi Endocrinology Animal science Internal medicine medicine Seasonal breeder Animal Science and Zoology Biotechnology media_common |
| Zdroj: | Reproduction in Domestic Animals. 45:464-467 |
| ISSN: | 1439-0531 0936-6768 |
| DOI: | 10.1111/j.1439-0531.2008.01246.x |
| Popis: | Contents The aim of this study was to investigate characterization of oestrous response, onset of induced oestrus, oestrous duration, fecundity and fertility in Awassi ewes treatment with intravaginal sponges and Controlled Intravaginal Drug Release (CIDR) devices in combination with pregnant mare serum gonadotropin (PMSG) under local environmental conditions during the non-breeding season. A total of 62 ewes were divided into three groups. Group CIDR (n = 20) was treated with CIDR devices for 12 days and 400 IU PMSG was injected upon removal of the CIDR. For ewes in Group Sponge (SP) (n = 24), 30 mg fluorogestone acetate was administered to the sheep for 12 days and 400 IU PMSG was injected upon withdrawal of the sponge. Group Control (CON) (n = 18) served as a control group and received no treatment. Adult, intact and sexually experienced Awassi rams were introduced to all groups at the time when the intravaginal devices were removed. There were no significant differences in terms of oestrous response (CIDR: 90%, SP: 87.5%), time to onset of oestrus and duration of induced oestrus between the CIDR and SP groups. The oestrous response of treatment groups was significantly greater (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text