twitter

Thursday, 24 November 2016

Serological evaluation of ovarian steroids of red-rumped agouti (Dasyprocta leporina) during the estrous cycle phases.

2016 Oct 19. pii: S0378-4320(16)30557-7. doi: 10.1016/j.anireprosci.2016.10.005. [Epub ahead of print]


Singh MD1, Morris MJ2, Guimarães DA3, Bourne G4, Garcia GW5.

Author information

  • 1Department of Food Production, Faculty of Food and Agriculture, The University of the West Indies, St. Augustine, West Indies, Trinidad and Tobago. Electronic address: michele.singh@gmail.com.
  • 2School of Veterinary Medicine, Faculty of Medical Science, The University of the West Indies, St. Augustine, West Indies, Trinidad and Tobago. Electronic address: vetondenet@hotmail.com.
  • 3Laboratory of Animal Reproduction, Institute of Biological Sciences, Federal University of Pará, Rua Augusto Corrêa, 01, Guamá, CEP 66075-110, Belém, Pará, Brazil. Electronic address: anisilvestreufpa@gmail.com.
  • 4School of Veterinary Medicine, Faculty of Medical Science, The University of the West Indies, St. Augustine, West Indies, Trinidad and Tobago. Electronic address: gabourne1@gmail.com.
  • 5Department of Food Production, Faculty of Food and Agriculture, The University of the West Indies, St. Augustine, West Indies, Trinidad and Tobago. Electronic address: prof.gary.garcia@gmail.com.

Abstract

The objective of this study was to evaluate serum progesterone (P4) and 17β estradiol (E2) concentrations throughout the estrous cycle in the red-rumped agouti (Dasyprocta leporina). A total of eight multiparous, captive-bred females were bled throughout their estrous cycle via saphenous venipuncture, with E2 and P4 concentrations being measured via ELISA of the serum collected. Serum E2 ranged from 1212 to 3500pg/ml with a peak value coinciding with observed estrus. However, two additional peak values for E2 were also recorded, one each in metestrus and proestrus respectively. P4 concentrations reached a maximum of 4.23ng/ml, and increases in P4 immediately followed the second E2 peak in metestrus. The highest concentrations of P4 were recorded in mid diestrus; between days 23-25 of the 31-day cycle. This phase was the longest in the agouti, consisting of approximately 19days and accounted for 61% of the cycle. This study increased the basal scientific reproductive knowledge of this potentially valuable neo-tropical species.
Copyright © 2016 Elsevier B.V. All rights reserved.

KEYWORDS:

Estradiol; Hormone; Hystricomorph; Neo-tropical; Progesterone; Wild rodents
Posted by at