Libido test in young Guzerat bulls and their associations with reproductive traits and serum testosterone levels

Authors

  • Juliano Cesar Dias
  • Venício José Andrade Universidade Federal de Minas Gerais
  • Lucas Luz Emerick
  • Jorge André Matias Martins
  • Vicente Ribeiro Vale Filho Universidade Federal de Minas Gerais
  • Martinho Almeida Silva Universidade Federal de Minas Gerais

DOI:

https://doi.org/10.5380/avs.v14i4.16202

Keywords:

comportamento sexual, Guzerá, libido, testosterona, zebu, Guzerat, sexual behavior, testosterone

Abstract

Twelve Guzerat bulls from 24 to 34 months olds, andrologically evaluated as normal were submitted to a libido test, to study sexual behaviour in pen, for periods of five, 10 and 15 minutes of observations and associate with andrologic traits (physic and .morphologic aspects of semen), scrotal circumference, breeding soundness evaluation for Zebu, body weight, age and serum testosterone concentrations. It was observed, in a general way, low reply of the animals to the tests, once that half of them were classified with average or high libido. Lower variation in the punctuation between the observation times was verified, with score 3.0 in five minutes and 3.3 in 15 minutes of evaluation (p>0.05). The association between the libido and serum testosterone concentrations (0.78), strengthens the finding of direct influence of this characteristics in the expression of the sexual interest in young Guzerat bulls.

Author Biographies

Juliano Cesar Dias

Aluno de pós-graduação da Escola de Veterinária da UFMG. Avenida Antônio Carlos, no 6627, Caixa Postal 567, CEP 30123-970, Belo Horizonte, MG. Bolsista do CNPq.

Venício José Andrade, Universidade Federal de Minas Gerais

UFMG, Escola de Veterinária, Departamento de Zootecnia.

Lucas Luz Emerick

Aluno de pós-graduação da Escola de Veterinária da UFMG.Bolsista do CNPQ.

Jorge André Matias Martins

Aluno de pós-graduação da Escola de Veterinária da UFMG.Bolsista do CNPQ.

Vicente Ribeiro Vale Filho, Universidade Federal de Minas Gerais

UFMG, Escola de Veterinária, Departamento de Clínica e Cirurgia.

Martinho Almeida Silva, Universidade Federal de Minas Gerais

UFMG, Escola de Veterinária, Departamento de Zootecnia.

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How to Cite

Dias, J. C., Andrade, V. J., Emerick, L. L., Martins, J. A. M., Vale Filho, V. R., & Silva, M. A. (2009). Libido test in young Guzerat bulls and their associations with reproductive traits and serum testosterone levels. Archives of Veterinary Science, 14(4). https://doi.org/10.5380/avs.v14i4.16202

Issue

Vol. 14 No. 4 (2009)

Section

Preventive Veterinary Medicine

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