Assessment of the intensity of behavioural traits and ovulation between synchronized and non-synchronized cows
| Autor: | R Arnoni, A Verduzco, Carlos S. Galina, G Van der Laan, M. Maquivar, K Forster |
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| Rok vydání: | 2007 |
| Předmět: |
Ovulation
medicine.medical_specialty media_common.quotation_subject Brahman Physiology Biology Sexually active Random Allocation Sexual Behavior Animal Endocrinology Ovarian Follicle Ovulation Induction Internal medicine medicine Animals media_common Ultrasonography Estrous cycle Drug Implants Progesterone Congeners Intensity (physics) Administration Intravaginal Animal Science and Zoology Cattle Female Estrus Detection Estrus Synchronization Biotechnology |
| Zdroj: | Reproduction in domestic animals = Zuchthygiene. 42(6) |
| ISSN: | 0936-6768 |
| Popis: | Contents Thirty cyclic, non-suckled Brahman cows were divided into three groups, all of which were synchronized sequentially with CIDR-B and observed continuously for 100 h to determine different behavioural oestrus signs. Twenty-four hours after implant withdrawal, all synchronized cows in the group, together with all other cows displaying oestrus, were subjected to intensive ultrasonographic observations (every 6 h for 120 h) to pinpoint the moment of ovulation. In the first group, oestrus and ovulation response was 60% (6/10), in the second 44% (4/9) showed oestrus and six ovulated, and in the third group oestrus and ovulation were 80% (8/10). Significant differences were observed between the second and third groups (p |
| Databáze: | OpenAIRE |
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