Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season

Stanimir Angelov Yotov; Anatoli Stefanov Atanasov

doi:doi:10.11648/j.avs.20130105.12

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Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season

Stanimir Angelov Yotov, Anatoli Stefanov Atanasov

Published in Animal and Veterinary Sciences (Volume 1, Issue 5)

Received: 7 August 2013 Published: 10 September 2013

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Abstract

The aim of the present study was to determine follicle development and resumption of ovarian activity in Bulgarian Murrah buffaloes by transrectal ultrasonographic monitoring of the ovaries during the first 50 days after after calving throughout the breeding season. The investigation included 18 clinically healthy Bulgarian Murrah buffaloes divided into two groups: Group I (n=8, primiparous buffaloes) and Group II (n=10, multiparous buffaloes). A transrectal ultrasonography was made at 3-day intervals between 1st and the 50th postpartum days. The evaluation of follicular development was based on the visualization of small, medium or large follicles. Ovulation was recorded when the first detected large follicle disappeared during the followed examinations and a corpus luteum in the same place was observed. After data processing, the mean diameter (mm) of small, medium and large follicles was determined. The average intervals (days) from parturition to the first identification of medium, large follicles and corpus luteum were also estimated and cumulative percentage of animals in both groups, according to the ovarian structures, and the time of their detection was calculated. The obtained results showed presence of small follicles during the experimental period. The mean diameters of medium and large follicles in multiparous animals were greater (P<0.05) than respective sizes in primiparous animals. The mean interval between calving and first ovulation trended to be shorter in multiparous in comparison with primiparous buffaloes. On postpartum day 46 cumulative percentage of multiparous animals with detected corpus luteum was higher (P<0.05) than estimated in primiparous animals. In conclusion, the follicular growth between clinically healthy primiparous and multiparous Bulgarian Murrah buffaloes during the first fifty days after calving throughout breeding season was different. The faster development of ovulatory follicles followed by ovulation and corpus luteum formation in multiparous than in primiparous bufaloes indicated an earlier resumption of the ovarian activity after calving. The obtained data could be used in development of different schedules for reproductive optimization in dairy buffaloes.

Published in	Animal and Veterinary Sciences (Volume 1, Issue 5)
DOI	10.11648/j.avs.20130105.12
Page(s)	36-41
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2013. Published by Science Publishing Group

Keywords

Buffaloes, Рostpartum Ovarian Activity, Ultrasound

References

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APA Style

Stanimir Angelov Yotov, Anatoli Stefanov Atanasov. (2013). Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season. Animal and Veterinary Sciences, 1(5), 36-41. https://doi.org/10.11648/j.avs.20130105.12

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ACS Style

Stanimir Angelov Yotov; Anatoli Stefanov Atanasov. Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season. Anim. Vet. Sci. 2013, 1(5), 36-41. doi: 10.11648/j.avs.20130105.12

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AMA Style

Stanimir Angelov Yotov, Anatoli Stefanov Atanasov. Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season. Anim Vet Sci. 2013;1(5):36-41. doi: 10.11648/j.avs.20130105.12

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@article{10.11648/j.avs.20130105.12,
  author = {Stanimir Angelov Yotov and Anatoli Stefanov Atanasov},
  title = {Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season},
  journal = {Animal and Veterinary Sciences},
  volume = {1},
  number = {5},
  pages = {36-41},
  doi = {10.11648/j.avs.20130105.12},
  url = {https://doi.org/10.11648/j.avs.20130105.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.avs.20130105.12},
  abstract = {The aim of the present study was to determine follicle development and resumption of ovarian activity in Bulgarian Murrah buffaloes by transrectal ultrasonographic monitoring of the ovaries during the first 50 days after after calving throughout the breeding season. The investigation included 18 clinically healthy Bulgarian Murrah buffaloes divided into two groups: Group I (n=8, primiparous buffaloes) and Group II (n=10, multiparous buffaloes). A transrectal ultrasonography was made at 3-day intervals between 1st and the 50th postpartum days. The evaluation of follicular development was based on the visualization of small, medium or large follicles. Ovulation was recorded when the first detected large follicle disappeared during the followed examinations and a corpus luteum in the same place was observed. After data processing, the mean diameter (mm) of small, medium and large follicles was determined. The average intervals (days) from parturition to the first identification of medium, large follicles and corpus luteum were also estimated and cumulative percentage of animals in both groups, according to the ovarian structures, and the time of their detection was calculated. The obtained results showed presence of small follicles during the experimental period. The mean diameters of medium and large follicles in multiparous animals were greater (P<0.05) than respective sizes in primiparous animals. The mean interval between calving and first ovulation trended to be shorter in multiparous in comparison with primiparous buffaloes. On postpartum day 46 cumulative percentage of multiparous animals with detected corpus luteum was higher (P<0.05) than estimated in primiparous animals. In conclusion, the follicular growth between clinically healthy primiparous and multiparous Bulgarian Murrah buffaloes during the first fifty days after calving throughout breeding season was different. The faster development of ovulatory follicles followed by ovulation and corpus luteum formation in multiparous than in primiparous bufaloes indicated an earlier resumption of the ovarian activity after calving. The obtained data could be used in development of different schedules for reproductive optimization in dairy buffaloes.},
 year = {2013}
}

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TY  - JOUR
T1  - Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season
AU  - Stanimir Angelov Yotov
AU  - Anatoli Stefanov Atanasov
Y1  - 2013/09/10
PY  - 2013
N1  - https://doi.org/10.11648/j.avs.20130105.12
DO  - 10.11648/j.avs.20130105.12
T2  - Animal and Veterinary Sciences
JF  - Animal and Veterinary Sciences
JO  - Animal and Veterinary Sciences
SP  - 36
EP  - 41
PB  - Science Publishing Group
SN  - 2328-5850
UR  - https://doi.org/10.11648/j.avs.20130105.12
AB  - The aim of the present study was to determine follicle development and resumption of ovarian activity in Bulgarian Murrah buffaloes by transrectal ultrasonographic monitoring of the ovaries during the first 50 days after after calving throughout the breeding season. The investigation included 18 clinically healthy Bulgarian Murrah buffaloes divided into two groups: Group I (n=8, primiparous buffaloes) and Group II (n=10, multiparous buffaloes). A transrectal ultrasonography was made at 3-day intervals between 1st and the 50th postpartum days. The evaluation of follicular development was based on the visualization of small, medium or large follicles. Ovulation was recorded when the first detected large follicle disappeared during the followed examinations and a corpus luteum in the same place was observed. After data processing, the mean diameter (mm) of small, medium and large follicles was determined. The average intervals (days) from parturition to the first identification of medium, large follicles and corpus luteum were also estimated and cumulative percentage of animals in both groups, according to the ovarian structures, and the time of their detection was calculated. The obtained results showed presence of small follicles during the experimental period. The mean diameters of medium and large follicles in multiparous animals were greater (P<0.05) than respective sizes in primiparous animals. The mean interval between calving and first ovulation trended to be shorter in multiparous in comparison with primiparous buffaloes. On postpartum day 46 cumulative percentage of multiparous animals with detected corpus luteum was higher (P<0.05) than estimated in primiparous animals. In conclusion, the follicular growth between clinically healthy primiparous and multiparous Bulgarian Murrah buffaloes during the first fifty days after calving throughout breeding season was different. The faster development of ovulatory follicles followed by ovulation and corpus luteum formation in multiparous than in primiparous bufaloes indicated an earlier resumption of the ovarian activity after calving. The obtained data could be used in development of different schedules for reproductive optimization in dairy buffaloes.
VL  - 1
IS  - 5
ER  -

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Author Information

Stanimir Angelov Yotov

Dept. of Obstetrics, Reproduction and Reproductive Disorders, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
Anatoli Stefanov Atanasov

Dept. of Obstetrics, Reproduction and Reproductive Disorders, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria

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Stanimir Angelov Yotov, Anatoli Stefanov Atanasov. (2013). Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season. Animal and Veterinary Sciences, 1(5), 36-41. https://doi.org/10.11648/j.avs.20130105.12

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ACS Style

Stanimir Angelov Yotov; Anatoli Stefanov Atanasov. Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season. Anim. Vet. Sci. 2013, 1(5), 36-41. doi: 10.11648/j.avs.20130105.12

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AMA Style

Stanimir Angelov Yotov, Anatoli Stefanov Atanasov. Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season. Anim Vet Sci. 2013;1(5):36-41. doi: 10.11648/j.avs.20130105.12

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@article{10.11648/j.avs.20130105.12,
  author = {Stanimir Angelov Yotov and Anatoli Stefanov Atanasov},
  title = {Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season},
  journal = {Animal and Veterinary Sciences},
  volume = {1},
  number = {5},
  pages = {36-41},
  doi = {10.11648/j.avs.20130105.12},
  url = {https://doi.org/10.11648/j.avs.20130105.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.avs.20130105.12},
  abstract = {The aim of the present study was to determine follicle development and resumption of ovarian activity in Bulgarian Murrah buffaloes by transrectal ultrasonographic monitoring of the ovaries during the first 50 days after after calving throughout the breeding season. The investigation included 18 clinically healthy Bulgarian Murrah buffaloes divided into two groups: Group I (n=8, primiparous buffaloes) and Group II (n=10, multiparous buffaloes). A transrectal ultrasonography was made at 3-day intervals between 1st and the 50th postpartum days. The evaluation of follicular development was based on the visualization of small, medium or large follicles. Ovulation was recorded when the first detected large follicle disappeared during the followed examinations and a corpus luteum in the same place was observed. After data processing, the mean diameter (mm) of small, medium and large follicles was determined. The average intervals (days) from parturition to the first identification of medium, large follicles and corpus luteum were also estimated and cumulative percentage of animals in both groups, according to the ovarian structures, and the time of their detection was calculated. The obtained results showed presence of small follicles during the experimental period. The mean diameters of medium and large follicles in multiparous animals were greater (P<0.05) than respective sizes in primiparous animals. The mean interval between calving and first ovulation trended to be shorter in multiparous in comparison with primiparous buffaloes. On postpartum day 46 cumulative percentage of multiparous animals with detected corpus luteum was higher (P<0.05) than estimated in primiparous animals. In conclusion, the follicular growth between clinically healthy primiparous and multiparous Bulgarian Murrah buffaloes during the first fifty days after calving throughout breeding season was different. The faster development of ovulatory follicles followed by ovulation and corpus luteum formation in multiparous than in primiparous bufaloes indicated an earlier resumption of the ovarian activity after calving. The obtained data could be used in development of different schedules for reproductive optimization in dairy buffaloes.},
 year = {2013}
}

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TY  - JOUR
T1  - Ultrasonographic Determination of Follicle Development and Resumption of Ovarian Activity in Postpartum Bulgarian Murrah Buffaloes during the Breeding Season
AU  - Stanimir Angelov Yotov
AU  - Anatoli Stefanov Atanasov
Y1  - 2013/09/10
PY  - 2013
N1  - https://doi.org/10.11648/j.avs.20130105.12
DO  - 10.11648/j.avs.20130105.12
T2  - Animal and Veterinary Sciences
JF  - Animal and Veterinary Sciences
JO  - Animal and Veterinary Sciences
SP  - 36
EP  - 41
PB  - Science Publishing Group
SN  - 2328-5850
UR  - https://doi.org/10.11648/j.avs.20130105.12
AB  - The aim of the present study was to determine follicle development and resumption of ovarian activity in Bulgarian Murrah buffaloes by transrectal ultrasonographic monitoring of the ovaries during the first 50 days after after calving throughout the breeding season. The investigation included 18 clinically healthy Bulgarian Murrah buffaloes divided into two groups: Group I (n=8, primiparous buffaloes) and Group II (n=10, multiparous buffaloes). A transrectal ultrasonography was made at 3-day intervals between 1st and the 50th postpartum days. The evaluation of follicular development was based on the visualization of small, medium or large follicles. Ovulation was recorded when the first detected large follicle disappeared during the followed examinations and a corpus luteum in the same place was observed. After data processing, the mean diameter (mm) of small, medium and large follicles was determined. The average intervals (days) from parturition to the first identification of medium, large follicles and corpus luteum were also estimated and cumulative percentage of animals in both groups, according to the ovarian structures, and the time of their detection was calculated. The obtained results showed presence of small follicles during the experimental period. The mean diameters of medium and large follicles in multiparous animals were greater (P<0.05) than respective sizes in primiparous animals. The mean interval between calving and first ovulation trended to be shorter in multiparous in comparison with primiparous buffaloes. On postpartum day 46 cumulative percentage of multiparous animals with detected corpus luteum was higher (P<0.05) than estimated in primiparous animals. In conclusion, the follicular growth between clinically healthy primiparous and multiparous Bulgarian Murrah buffaloes during the first fifty days after calving throughout breeding season was different. The faster development of ovulatory follicles followed by ovulation and corpus luteum formation in multiparous than in primiparous bufaloes indicated an earlier resumption of the ovarian activity after calving. The obtained data could be used in development of different schedules for reproductive optimization in dairy buffaloes.
VL  - 1
IS  - 5
ER  -

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