Effect of the side of ovulation on the uterine morphometry, blood flow, progesterone, oestradiol and nitric oxide during spontaneous and induced oestrus in lactating dairy cows
| العنوان: | Effect of the side of ovulation on the uterine morphometry, blood flow, progesterone, oestradiol and nitric oxide during spontaneous and induced oestrus in lactating dairy cows |
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| المؤلفون: | Amal M. Abo El-Maaty, Elshymaa A. Abdelnaby |
| المصدر: | Reproduction in Domestic Animals. 55:851-860 |
| بيانات النشر: | Wiley, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Ovulation, Dorsum, media_common.quotation_subject, Dinoprost, Nitric Oxide, Nitric oxide, Andrology, Endometrium, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Endocrinology, Estrus, Animals, Lactation, Progesterone, media_common, Estrous cycle, 030219 obstetrics & reproductive medicine, Estradiol, Chemistry, Uterus, 0402 animal and dairy science, Ultrasonography, Doppler, Uterine horns, 04 agricultural and veterinary sciences, Blood flow, 040201 dairy & animal science, Administration, Intravaginal, Cattle, Female, Animal Science and Zoology, Biotechnology, Hormone |
| الوصف: | This study investigates the changes in endometrial thickness between ipsilateral and contralateral uterine horns, diameter, blood flow area and hormonal concentrations in cows during natural and induced oestrus. In the induced group, six cows received a controlled internal device insert for 7 days. In the normal and induced oestrous group (n = 12), Doppler was performed day after day from day 5 till day 15. Oestradiol, progesterone and nitric oxide metabolites (NOMs) were measured. Results showed that dorsal, ventral and cross-section diameter of the ipsilateral horn increased during the induced oestrous group to reach a maximum on day 2 than during normal one. The total coloured area in both horns in a normal and induced group was also affected (p < .001), as the total coloured area in the ipsilateral horns, increased in the induced group, reach a maximum on day 2 after ovulation, while in normal it reaches a maximum on day of ovulation. Oestradiol increased during the induced cycle than during the normal one, but progesterone increased during days after ovulation reaches a higher value on day 10 in both groups. Nitric oxide showed two peaks, one on the day 3 and another peak on day 5. Conclusion: The ipsilateral uterine horn different diameters and thickness increased more rapidly in the induced oestrous group than the natural oestrus group. A complete analysis of variations in P4 and E2 concentrations and endometrial thickness suggested that decreases in P4 concentrations were related to an increase in endometrial thickness and that increases in E2 concentrations enhanced these endometrial changes. |
| تدمد: | 1439-0531 0936-6768 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdf1635fdbde27a2afb5c2854853278dTest https://doi.org/10.1111/rda.13693Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....cdf1635fdbde27a2afb5c2854853278d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14390531 09366768 |
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