RESEARCH ARTICLES
Ovarian follicular dynamics in peripubertal Malabari goats
Amritha Aravind, Shibu Simon, C. Jayakumar, R.S. Abhilash, R. T. Venkatachalapathy, K. Raji and V. L. Gleeja
doi: https://doi.org/10.51966/jvas.2022.53.4.529-534
Journal of Veterinary and Animal Sciences.2022.53(4):529-534.
Author Details
Amritha Aravind: Ph. D scholar, Department of Animal Reproduction, Gynaecology and Obstetrics College of Veterinary and Animal Sciences, Mannuthy, Thrissur- 680 651. Kerala Veterinary and Animal Sciences University, Kerala, India.
Shibu Simon: Assistant Professor, Department of Animal Reproduction, Gynaecology and Obstetrics College of Veterinary and Animal Sciences, Mannuthy, Thrissur- 680 651. Kerala Veterinary and Animal Sciences University, Kerala, India.
C. Jayakumar: Assistant Professor and Head (i/c), Department of Animal Reproduction, Gynaecology and Obstetrics College of Veterinary and Animal Sciences, Mannuthy, Thrissur- 680 651. Kerala Veterinary and Animal Sciences University, Kerala, India.
R.S. Abhilash: Assistant Professor, Department of Animal Reproduction, Gynaecology and Obstetrics College of Veterinary and Animal Sciences, Mannuthy, Thrissur- 680 651. Kerala Veterinary and Animal Sciences University, Kerala, India.
R.T. Venkatachalapathy : Professor, Department of Animal Genetics and Breeding, College of Veterinary and Animal Sciences, Mannuthy, Thrissur- 680 651. Kerala Veterinary and Animal Sciences University, Kerala, India.
K. Raji : Associate Professor and Head, Department of Veterinary Physiology, College of Veterinary and Animal Sciences, Pookode, Kerala Veterinary and Animal Sciences University, Kerala, India.
V. L. Gleeja : Assistant Professor, Department of Statistics, College of Veterinary and Animal Sciences, Mannuthy, Thrissur- 680 651. Kerala Veterinary and Animal Sciences University, Kerala, India.
Article History
Received: 26.03.2022, Accepted: 27.04.2022, Published online: 31.12.2022
Corresponding author: Amritha Aravind
e-mail : amritha@kvasu.ac.in
Citation: Aravind, A ., Simon, S., Jayakumar, C., Abhilash, R.S .,Venkatachalapathy, R.T., Raji, K.and Gleeja ,V.l. Ovarian follicular dynamics in peripubertal Malabari goats.J. Vet. Anim. Sci. 53(4): 529-534
DOI: https://doi.org/10.51966/jvas.2022.53.4.529-534
Abstract
The aim of this study was to characterise the follicular dynamics in first two oestrous cycles of peripubertal Malabari goats. Transrectal ultrasonography was carried out on alternate days of oestrous cycles after first observed oestrus. Follicular studies revealed presence of two to five wave cycles with predominant three and four wave patterns. The interwave interval for ovulatory wave was longer than preceding waves in three and five wave cycles. The diameter of largest follicles in wave 1 was larger than follicles of subsequent waves of three, four and five wave cycles. The largest follicles in each wave could be observed from day 3 to day 13 of oestrous cycle. Majority of ovulations occurred on day 20 of oestrous cycles and short cycles were more in first oestrous cycle. The overall mean per cent of single and double ovulations were 56.3 and 43.8 and mean ovulatory follicle size was 6.59 ± 0.11 mm in peripubertal goats. The mean length of first and second oestrous cycle was observed as 17.72± 0.79 and 20.19± 0.43 days, respectively and mean duration of first and second oestrus was 36.88 ± 2.44 and 40.13 ± 1.84 h, respectively. The study revealed that predominant wave pattern was three and four waves in peripubertal Malabari breeds. The first oestrous cycle length was shorter and characterised by higher percentage of single ovulations with smaller periovulatory follicle size. Larger ovulatory follicles and double ovulations were observed in second oestrous cycle.
Key words: Follicular dynamics, peripubertal Malabari goats
