Dinamika Ovarium pada Kuda Hasil Persilangan Pejantan Thoroughbred dengan Induk Lokal Indonesia

https://doi.org/10.21059/buletinpeternak.v40i3.10743

Muhammad Danang Eko Yulianto(1*), Bambang Purwantara(2), Amrozi Amrozi(3)

(1) 
(2) Institut Pertanian Bogor
(3) Institut Pertanian Bogor
(*) Corresponding Author

Abstract


The development of horse breeding industry in Indonesia was commenced through horse racing events held all over the country. It were accelerated by the development of Thoroughbred-Indonesian local Crossbred horses. There are many broodmares injured during their racing time and retired from the racetracks. They may still has a reproductive vigor to continue on producing offsprings. Very little information has been reported on the monitoring the reproductive capacity of the mares. The objective of this study was to explore ultrasonography imaging of the ovarian dynamics, correlated with the estrus behavior of the Thoroughbred-Indonesian local crossbred mares. Three Thoroughbred-Indonesian local crossbred mares with 6.25-12.5% of local genetics aged 12-20 years old were used in this study. Estrus and ovulation were synchronized by 10 mg PGFi.m. at luteal phase and 1,500 IU hCG i.m. injection when the dominant follicle reach ≥30 mm in diameter. Ultrasonography examination was done every morning at approximately at the same time. Estrus behavior was observed by using teaser stallions following a standard method. Results of the experiment indicated that onset of the estrus was reached 1.33±0.58 days after the hCG injection, with the average duration of 4.00±1.00 days. The ovulations were done at 5.33±1.15 days after PGF treatment and 66.67±10.07 hours after hCG treatment. Maximum follicle diameter was identified to reach 4.50±0.52 cm at one day before ovulation. The mares performed 25.4±3.38 days length of estrus cycle with 2-3 follicular  waves. It had been identified that the estrus duration  was  6.8±1.92  days  in mares with the age of 12-20 years. The average of maximum diameter of the largest follicle before ovulation was 4.2±1.24 cm. In conclusion, to improve the efficiency of breeding, several information are needed i.e. the optimal time of ovulation, relevan parameters related to follicular development.

 


Keywords


Cycle; Estrus; Mares; Ovarian dynamics; Ultrasonography



References

Bergfelt, D. R., C. Meira, J. J. Fleury, P. D. Fleury, J. A. Dell'Aqua, G. P. Adams. 2007. Ovulation synchronization following commercial application of ultrasound-guided follicle ablation during the estrous cycle in mares. Theriogenology 68: 1183-1191.

Berliana, D. 2007. Analisis dan evaluasi genetik kuda pacu Indonesia. Tesis Sekolah Pasca Sarjana Institut Pertanian Bogor, Bogor.

Coleman, R. J. and D. Powell. 2004. Teasing Mares. Cooperative Extention Service. University of Kentucky-College of Agriculture.

Donadeu, F. X. and O. J. Ginther. 2002. Changes in concentrations of follicular fluid factors during follicle selection in mares. J. Biol. Reprod. 66: 1111-1118.

Gastal, E. L., L. A Silva, M. O. Gastal and M. J. Evans. 2006. Effect of different doses of hCG on diameter of the preovulatory follicle and interval to ovulation in mares. Anim. Reprod. Sci. 94: 186-190.

Ginther, O. J. 1992. Reproductive Biology of The Mare: Basic and Applied Aspects. WI: Equiservices Publishing, Cross Plains.

Ginther, O. J., E. L. Gastal, M. O. Gastal, D. R. Bergfelt, A. R. Baerwald and R. A. Pierson. 2004. Comparative study of the dynamics of follicular waves in mares and women. Biol. Reprod. 71: 1195-1201.

Hafez, E. S. E. 2000. Reproduction in Farm Animals. 7th edn. Lea and Febiger, Philadelphia.

Samper, J. C., H. Geertsema and P. Hearn. 1993. Rate of luteolysis, folliculogenesis and interval to ovulation of mares treated with a prostaglandin analogue on d6 or 10 of the estrous cycle. Proc. Am. Assoc. Equine Pract: 169-71.

Samper, J. C. 2008. Induction of estrus and ovulation: Why some mares respond and others do not. Theriogenology 70: 445-447.

Steel, R. G. D. dan J. H. Torrie 1999. Prinsip dan Prosedur statistika. Edisi ke-2. Gramedia Pustaka Utama, Jakarta.

Waring, G. H. 2003. Horse Behavior. 2nd edn. Noyes Publication William Andrew Publishing, New York.

Shirazi, A., F. Gharagozloo and H. Ghasemzadeh-Nava. 2004. Ultrasonic characteristics of preovulatory follicle and ovulation in caspian mares. J. Anim. Reprod. Sci. 80: 261-266.



DOI: https://doi.org/10.21059/buletinpeternak.v40i3.10743

Article Metrics

Abstract views : 709 | views : 709

Refbacks

  • There are currently no refbacks.




License URL: http://journal.ugm.ac.id/buletinpeternakan/pages/view/Publication%20Ethics%20and%20Malpractice%20Statement

Buletin Peternakan (Bulletin of Animal Science) Indexed by:

 Harvard Library
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.