Correlation between testicular biometry, age and the reproductive characteristics of Nelore bulls

Authors

  • Marcio Saporski Segui PUCPR
  • Thais Angela Turra Mestranda da PUCPR
  • Emanuel Faleiros Mestrando PUCPR
  • Romildo Romualdo Weiss UFPR
  • Luiz Ernandes Kozicki PUCPR
  • Ivo Walter Santos UFPR

DOI:

https://doi.org/10.5380/avs.v16i1.17557

Keywords:

biometria testicular, circunferência escrotal, espermograma, Nelore, vigor motilidade concentração espermáticas, Nellore bulls, scrotal circumference, testicular biometry, spermatic vigor motility concentration

Abstract

The aim of the present experiment was to establish an interrelationship between the testicular and spermatic biometry of young bulls for breeding. Twenty bulls of the Nelore bred, between 10 and 24 months were used. The animals a monthly measurement of the perimetral scrotum and vigor, motility and sperm concentration were submitted. During the experimental period bulls lived under pasturage conditions with mineral supplement. The experimental bulls were divided in two groups: G1 formed by 10 animals, aging from 10 to 18 months, and G2, also with 10 animals but aging 18,1 to 24 months. The evaluated reproductive parameters allowed conclude that both age and body development may exert influence on the studied reproductive characteristics. By comparison of both groups in regard to the age, it has been found that the animals from the G1 disclosed a superior testicular biometric development (p<0.001) than the bulls from the G2, the sperm concentration increased in G2, as they age increased (p<0.001). The vigor and the sperm motility did not affected by the age in the period.

Author Biography

Luiz Ernandes Kozicki, PUCPR

Médico Veterinário pela UFPR, mestrado pela USP, Doutorado pela Justus Liebig Universitat Giessen, Pós Doutorado pela Universidade Técnica de Munique. Area de Reprodução Animal.

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Published

2011-08-26

How to Cite

Segui, M. S., Turra, T. A., Faleiros, E., Weiss, R. R., Kozicki, L. E., & Santos, I. W. (2011). Correlation between testicular biometry, age and the reproductive characteristics of Nelore bulls. Archives of Veterinary Science, 16(1). https://doi.org/10.5380/avs.v16i1.17557

Issue

Vol. 16 No. 1 (2011)

Section

Preventive Veterinary Medicine

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