Go to Top Go to Bottom
Asian-Australas J Anim Sci > Volume 22(8); 2009 > Article
Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 2009;22(8): 1113-1116.
DOI: https://doi.org/10.5713/ajas.2009.90029    Published online June 26, 2009.
Follicular Population during the Oestrous Cycle in Nili-Ravi Buffaloes Undergoing Spontaneous and PGF2a Induced Luteolysis
H. M. Warriach, N. Ahmad
Abstract
The objective of this study was to compare the follicular population during spontaneous and PGF2 induced oestrous cycles in Nili-Ravi buffaloes. In Exp.1, (n = 13 oestrous cycles) follicular population was monitored using ultrasonography on alternate days. Buffaloes were monitored for ovarian follicles from day 0 (first oestrus) until next oestrus. These animals were observed for oestrus twice daily using a teaser bull. Of 12 oestrous cycles, 9 (75%) had two waves of follicular activity and only 3 (25%) had three waves during the oestrous cycle. The mean number of small, medium and large follicles among various days of the oestrous cycle between two and three waves of follicular development were not significantly different (p>0.05). In Exp. 2, follicular population 3 days before oestrus was compared in buffaloes undergoing spontaneous (n = 12 oestrous cycles) and PGF2 induced (n = 6) luteolysis. The mean number of small and large follicles increased (p<0.05) and the number of medium follicles decreased (p<0.05) during the 3 days before oestrus in buffaloes undergoing induced luteolysis as compared to those with spontaneous luteolysis. These results showed that the mean number of small, medium and large follicles among various days of the oestrous cycle were similar between the two and three waves of follicular development, and three days before oestrous the number of small, medium and large follicles altered due to induced luteolysis on day 9, compared to those with spontaneous luteolysis.
Keywords: Follicular Population; Oestrous Cycles; Buffaloes
TOOLS
METRICS Graph View
  • 1 Crossref
  • 2 Scopus
  • 1,756 View
  • 7 Download
Related articles


Editorial Office
Asian-Australasian Association of Animal Production Societies(AAAP)
Room 708 Sammo Sporex, 23, Sillim-ro 59-gil, Gwanak-gu, Seoul 08776, Korea   
TEL : +82-2-888-6558    FAX : +82-2-888-6559   
E-mail : jongkha@hotmail.com               

Copyright © 2019 by Asian-Australasian Journal of Animal Sciences. All rights reserved.

Close layer
prev next