Concentration of fecal corticosterone metabolites in dominant versus subordinate buffalo heifers

  • Aparecida F Madella-Oliveira
  • Celia R Quirino
  • Aline Pacheco
  • Ricardo LD da Costa
  • Renato T Beltrame
  • Weliton M Costa
  • Claudio A de Oliveira
  • Priscilla V Furtado

Abstract

The objective of this work was to evaluate the concentration of fecal metabolites of corticosterone and to verify if there are differences between dominant and subordinate heifers. The feces of 18 buffalo heifers were collected in the estrous period, to quantify the corticosterone concentrations. The heifers were separated into three groups (G1, G2 and G3) and synchronized. The observations of the social and sexual behaviors were recorded and, from these results, the sociometric matrix was constructed to establish the social index and determine the hierarchic positions of the buffalo heifers as low, moderate and high. The fecal concentrations of corticosterone were higher in animals with high hierarchic position on day zero and describe alterations in the dominant females before synchronization, suggesting that there is an energy cost for the females in the highest position to be able to maintain their dominance status.

Keywords: Estrus, hormones, social status, non-invasive technique

African Journal of Biotechnology, Vol 13(16), 1726-1730

Author Biographies

Aparecida F Madella-Oliveira
Instituto Federal do Espirito Santo - Campus de Alegre - ES, Brazil
Celia R Quirino
Laboratorio de Reproducao e Melhoramento Genetico Animal, CCTA, Universidade Estadual do Norte Fluminense Darcy Ribeiro-RJ, Brazil
Aline Pacheco
Laboratorio de Reproducao e Melhoramento Genetico Animal, CCTA, Universidade Estadual do Norte Fluminense Darcy Ribeiro-RJ, Brazil
Ricardo LD da Costa
Instituto de Zootencia, da Agencia Paulista de Tecnologia dos Agronegocios, Rua Heitor Penteado, 56, Nova Odessa, Sao Paulo, Brazil
Renato T Beltrame
Centro Universitario do Espirito Santo-UNESC, Av, Fioravante Rossi, 2930, Colatina, ES, Brazil
Weliton M Costa
Graduate Student of Instituto Federal do Espirito Santo - Campus de Alegre - ES, Brazil
Claudio A de Oliveira
Hormone Dose Lab of Universidade de Sao Paulo-SP, Brazil
Priscilla V Furtado
Hormone Dose Lab of Universidade de Sao Paulo-SP, Brazil
Published
2015-07-02
Section
Articles

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eISSN: 1684-5315