A new approach for estrus induction in Arabian mares suffering from ovarian inactivity
Joint Authors
Ismail, S. T.
Fadil, M. S.
Karam, K. M.
al-Biyali, M. S.
Abu Atiyyah, E. F.
Source
al-Qadisiyah Journal of Veterinary Medicine Sciences
Publisher
al-Qadisiyah University College of Veterinary Medicine
Publication Date
2018-06-30
Country of Publication
Iraq
No. of Pages
5
Main Subjects
English Abstract
Twenty-six Arabian mares affected with ovarian inactivity, as monitored by the clinical examination and ultrasonographical scanning, were selected during December and January.
these animals were subjected to a new protocol of sequential hormonal injections as a trial for estrus induction, progesterone (300 mg/day) was injected on days 1,4,7,10 and 14, estradiol benzoate (15mg/day) on days 6 and 9, and gnrh (0.01mg/day) on days 18, 20, and 22 of the treatment regimen.
an estrus induction response of 80.77% (21/26) was observed following hormonal treatment.
the onset time of post treatment was short (66.48 hours) and more synchronized.
the responded group showed significant (p<0.05) increase in follicular size from day -3 (3.26 cm) until reaching its maximum size at the pre-ovulatory day (4.48cm).
this was accompanied by continuous significant (p<0.05)decrease in the serum concentrations of progesterone and increase in the levels of serum estradiol-17β from day -3 (0.42 ng/ml and 56.48 pg/ml, respectively).
the minimum level of progesterone (0.28 ng/ml) was detected at day 0 of ovulation, whereas the maximum level of estradiol-17β was observed at the preovulatory day (89.22 pg/ml).
however, 28.57% (6/21) of the responded mares did not develop functional corpus luteum so confirmed by functional progesterone estimation.
reasons for failure of 19.23% mares (5/26) to respond to hormonal treatment could be due to the small size of emerging follicles at the end of treatment (1.05 vs 1.82 cm ) as well as the older ages of these animals (15.36 vs 8.87 years old) compared to the responded group.
Data Type
Conference Papers
Record ID
BIM-913639
American Psychological Association (APA)
Karam, K. M.& al-Biyali, M. S.& Ismail, S. T.& Fadil, M. S.& Abu Atiyyah, E. F.. 2018-06-30. A new approach for estrus induction in Arabian mares suffering from ovarian inactivity. Scientific Conference : Depending on Scientific Research Approach to develop animal industry and overcome its Problems (6th : 2017 : al-Qadisiyah University, Iraq). . Vol. 17, no. 1 (2018), pp.142-146.a-Qadisiyah Iraq : al-Qadisiyah University College of Veterinary Medicine.
https://search.emarefa.net/detail/BIM-913639
Modern Language Association (MLA)
Karam, K. M.…[et al.]. A new approach for estrus induction in Arabian mares suffering from ovarian inactivity. . a-Qadisiyah Iraq : al-Qadisiyah University College of Veterinary Medicine. 2018-06-30.
https://search.emarefa.net/detail/BIM-913639
American Medical Association (AMA)
Karam, K. M.& al-Biyali, M. S.& Ismail, S. T.& Fadil, M. S.& Abu Atiyyah, E. F.. A new approach for estrus induction in Arabian mares suffering from ovarian inactivity. . Scientific Conference : Depending on Scientific Research Approach to develop animal industry and overcome its Problems (6th : 2017 : al-Qadisiyah University, Iraq).
https://search.emarefa.net/detail/BIM-913639
