The effect of season on semen characteristics and freezability in Bos indicus and Bos taurus bulls in the southeastern region of Brazil.

@article{Koivisto2009TheEO,
  title={The effect of season on semen characteristics and freezability in Bos indicus and Bos taurus bulls in the southeastern region of Brazil.},
  author={Marion Burkhardt de Koivisto and M T A Costa and S{\'i}lvia Helena Venturoli Perri and Wilter Ricardo Russiano Vicente},
  journal={Reproduction in domestic animals = Zuchthygiene},
  year={2009},
  volume={44 4},
  pages={587-92}
}
The objectives of this study were to evaluate the effects of season in southeast of Brazil comparing genotypes on semen characteristics, freezability and peripheral plasma concentrations of testosterone. Ejaculates of five Bos indicus bulls and six Bos taurus bulls were evaluated over a period of 27 months, which was divided into winter (July, August, September), spring (October, November, December), summer (January, February, March) and autumn (April, May, June). Semen was evaluated according… CONTINUE READING