OVARIAN FOLLICULAR DYNAMIC DURING EARLY PREGNANCY IN BUFFALO Bubalus bubalis HEIFERS

Authors

  • Ian Martin FMVZ/UNESP
  • Christiane Rumi Irikura
  • Lindsay Unno Gimenes FMVZ/UNESP
  • Cássia Maria Barroso Orlandi FMVZ/UNESP
  • Eunice Oba FMVZ/UNESP
  • João Carlos Pinheiro Ferreira FMVZ/UNESP

DOI:

https://doi.org/10.5216/cab.v9i1.442

Abstract

The aim of the present study was to characterize the follicular dynamics during early pregnancy in Murrah heifers. Ten heifers were submitted to daily transrectal ultrasonographic examination, from the 18th to 60th day of pregnancy. Three animals presented follicular waves of 9.67?0.58 days in duration and the dominant and largest subordinate follicles measured, respectively, 11.9?1.3 mm and 7.0?1.0 mm. The growth plateau was 6.00?1.00 days in duration. The remaining seven heifers presented an irregular follicular development with three different patterns as follow: the first irregular observed pattern, characterized by waves of 7.91±1.68 days in duration, with the dominant follicle and the largest subordinated follicle reaching maximum diameter of 11.4±1.1 and 7.0±1.6 mm, respectively. The deviation on this pattern happened on day 3.57±0.53 and the plateau had an average duration of 4.67±1.37 days. The second irregular observed pattern presented waves lasting 6.44±1.81 days, with the dominant follicle and the largest subordinated follicle reaching maximum diameter of 9.0±0.6 and 6.8±0.4 mm, respectively. The deviation happened on day 4.00±1.41 after the wave detection. The third irregular pattern observed was characterized by periods of subsequent follicular growth without defined phases as described for the first and second patterns. In conclusion, from the 18th to 60th day of pregnancy, the follicular development is characterized by waves of different patterns in buffalo. Keywords Buffalo, Pregnancy, Ultrasound, Follicular Dynamic.

Downloads

Download data is not yet available.

Downloads

Published

2008-04-03

How to Cite

MARTIN, I.; IRIKURA, C. R.; GIMENES, L. U.; ORLANDI, C. M. B.; OBA, E.; FERREIRA, J. C. P. OVARIAN FOLLICULAR DYNAMIC DURING EARLY PREGNANCY IN BUFFALO Bubalus bubalis HEIFERS. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 9, n. 1, p. 121–127, 2008. DOI: 10.5216/cab.v9i1.442. Disponível em: https://revistas.ufg.br/vet/article/view/442. Acesso em: 23 nov. 2024.

Issue

Vol. 9 No. 1 (2008)

Section

Veterinary Medicine

License

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g. in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).