Influence of availability of shade on testicular characteristics of Santa Ines rams - doi: 10.4025/actascianimsci.v35i.18479

Autores

  • Sônia Martins Teodoro Universidade Estadual do Sudoeste da Bahia
  • Alfredo Manuel Franco Pereira Universidade de Évora
  • José Dantas Gusmão Filho Instituto Federal da Bahia
  • Jadir Nogueira da Silva Universidade Federal de Viçosa

DOI:

https://doi.org/10.4025/actascianimsci.v35i4.18479

Palavras-chave:

Semen, Biometrics, Sheep, Shade, Thermal stress

Resumo

The purpose of this study was to evaluate the effects of availability of artificial shading on
testicular and seminal characteristics of Santa Ines crossbred rams. Twelve 8 month old rams at 38.1 ± 5.2 kg
average weight, were used in a total random design with two treatments: areas with and without available artificial
shading (black polyethylene mesh screen for a 50% reduction of solar radiation). The scrotal circumference,
scrotal length, scrotal volume, rectal temperature and scrotal temperature were measured twice a week. Also a
biweekly analysis of the semen was carried out, measuring the volume and spermatic concentration as well as the
percentage of normal spermatozoa. The results show that available shading provided for lower scrotal
temperatures and higher sperm concentration, without influencing the scrotal volume and the percentage of
normal spermatozoa. The testicular measures, such as the scrotal circumference and length were higher in the
rams that were subjected to the no available shading treatment. The absence of differences, in some of the
analyzed variables, between the two treatments, with and without available shading, could be due to high
adaptability of the animals.

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Biografia do Autor

  • Sônia Martins Teodoro, Universidade Estadual do Sudoeste da Bahia

    UESB – Universidade Estadual do Sudoeste da Bahia, DEBI – Departamento de Estudos Básicos e  Instrumentais, CEBIO – Centro de Estudos Bioclimáticos, Campus  Juvino Oliveira – Itapetinga, Bahia

  • Alfredo Manuel Franco Pereira, Universidade de Évora
    Zootecnic Department, University of Évora, Apartado 94, CP 7000-554. Évora – Portugal (351)266760800
  • José Dantas Gusmão Filho, Instituto Federal da Bahia
    Federal Institute of Bahia – Av. David Jonas Fadini, s/n. Rosa Neto. CP 45820-970 - Eunápolis, Bahia – Brazil (55) 7332812266
  • Jadir Nogueira da Silva, Universidade Federal de Viçosa
    UFV – Depto. Engenharia Agrícola. Campus Universitário – Viçosa, MG – 36570-000 – Telefone (31) 3899-1928 – Fax (31) 3899-2735

Publicado

2013-05-27

Edição

Seção

Reprodução e Melhoramento Animal

Como Citar

Influence of availability of shade on testicular characteristics of Santa Ines rams - doi: 10.4025/actascianimsci.v35i.18479. (2013). Acta Scientiarum. Animal Sciences, 35(4), 441-446. https://doi.org/10.4025/actascianimsci.v35i4.18479