Research Article Open Access

Determination of Breeding Seasonality in Rusa Deer (Rusa timorensis) Stags via Serum Testosterone Profiling

Wan Nor Fitri Wan Jaafar1, Abd Wahid Haron1, Rosnina Hj Yusoff1, Faez Firdaus Jesse Abdullah1, Siti Aimi Sarah Zainal Abidin2, Mohd. Azmi Mohd Lila1, Azlan Che' Amat1, Muhammad Azrolharith Rashid1 and Mohamed Ariff Omar1
  • 1 Universiti Putra Malaysia, Malaysia
  • 2 Universiti Teknologi Mara (UiTM), Malaysia

Abstract

Breeding seasonality in mammals is influenced by the environmental changes and the endocrine response of the animals to that changes. Comprehension in breeding seasonality enables better reproductive management consequently maximizing the reproductive potential of the stags. Despite that, the study in breeding seasonality in Rusa deer (Rusa timorensis) is still scarce. Five healthy and matured stags were selected for this experiment. Semen were collected using electroejaculator at a monthly interval from April to September 2012. Semen motility is determined using a percentage. Meteorological data were obtained from the nearest weather station located in Petaling Jaya. Serum was utilized for the radioimmunoassay determination of serum testosterone profile. The warmest condition was in June and it's coolest in November of 2012. There was a strong, positive correlation between testosterone concentration and general motility (p<0.05) with a correlation coefficient, rs = 0.943. Meteorological data alone; temperature, relative humidity and rainfall are insufficient to determine the breeding seasonality in Rusa deer, bearing no significant correlation with serum testosterone concentration and sperm motility. Rusa deer stags is reproductively active from April to July, low in August and starts to rise again in September. Therefore, this study demonstrates that breeding seasonality in Rusa deer stags can be determined via serum testosterone profiling.

American Journal of Animal and Veterinary Sciences
Volume 12 No. 1, 2017, 45-52

DOI: https://doi.org/10.3844/ajavsp.2017.45.52

Submitted On: 6 December 2016 Published On: 19 March 2017

How to Cite: Jaafar, W. N. F. W., Haron, A. W., Yusoff, R. H., Abdullah, F. F. J., Abidin, S. A. S. Z., Lila, M. A. M., Amat, A. C., Rashid, M. A. & Omar, M. A. (2017). Determination of Breeding Seasonality in Rusa Deer (Rusa timorensis) Stags via Serum Testosterone Profiling. American Journal of Animal and Veterinary Sciences, 12(1), 45-52. https://doi.org/10.3844/ajavsp.2017.45.52

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Keywords

  • Rusa Deer
  • Stags
  • Breeding
  • Seasonality
  • Meteorology
  • Testosterone
  • Semen Evaluation