Environmental effects and repeatability estimates for sperm production and semen quality of Holstein bulls

@inproceedings{Boujenane2015EnvironmentalEA,
  title={Environmental effects and repeatability estimates for sperm production and semen quality of Holstein bulls},
  author={Isma{\"i}l Boujenane and Khouloud Boussaq},
  year={2015}
}
The purpose of this study was to estimate environmental effects on semen production of artificial insemination (AI) Holstein bulls managed under Moroccan conditions. A total of 4 046 ejaculates collected from 34 Holstein bulls in the years 2009-2013 were analysed. Studied variables were volume, concentration, total number of spermatozoa, mass motility, individual motility and post-thawing motility. Data were analysed by REML method using the mixed model including the random effect of bull and… CONTINUE READING

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