Effect of clinical doses of buserelin on in vivo bovine uterine activity at estrus
| Autor: | Halef DOĞAN, Muhterem AYDIN |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
endocrine system
uterus contractility area under the curve animal experiment electrical parameters vaginal secretion progesterone Buserelin Article defecation mathematical analysis corpus luteum Uterine contractility transrectal ultrasonography Estrus luteolysis oxytocin chorionic gonadotropin controlled study estrus cycle coughing nonhuman General Veterinary adult animal model bovine Cow artificial insemination echography pruritus enzyme linked immunosorbent assay female fertilization GnRH uterus contraction intrauterine pressure |
| Popis: | For successful fertilization, a transfer system named "rapid sperm transport" generated by uterine contractions plays a crucial role. The purpose of this in vivo study was to investigate the effect of buserelin, a GnRH agonist widely used for ovulation induction after mating or artificial insemination, on bovine uterine contractility which supports rapid sperm transport at estrus. In vivo uterine contractile activity was measured by intrauterine pressure recording technique. In the study, the spontaneous uterine contractile activities of 28 cows at estrus were observed for 30 min. The cows were randomly divided into 4 treatment groups which have 7 cows each of and were injected appropriate agents as follows; two different clinical doses of buserelin (10.5 ?g, 21 ?g), oxytocin (50 IU) and control (placebo). Following treatment, drug-induced uterine activity was measured for 60 min. There were no differences in terms of frequency in all groups observed. Oxytocin which is known as an effective uterotonic increased the amplitude and area under curve of contraction at estrus. Two different doses of buserelin were observed to have no effect on uterine contractile activity in cows throughout 60 min. It was concluded that GnRH has no function on bovine uterine contractility which plays a role in sperm transportation at estrus. © 2021 TUBITAK. All rights reserved. FUBAP-VF.13.14 This work was supported by the Fırat University Scientific Project Coordination Unit (FUBAP-VF.13.14). We would like to thank Fırat University Agriculture and Livestock Research Center Farm’s employees who provided assistance in conducting the experimental part of the study. |
| Databáze: | OpenAIRE |
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