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Volume 48, issue 3
Arch. Anim. Breed., 48, 261–269, 2005
https://doi.org/10.5194/aab-48-261-2005
© Author(s) 2005. This work is distributed under
the Creative Commons Attribution 3.0 License.
Arch. Anim. Breed., 48, 261–269, 2005
https://doi.org/10.5194/aab-48-261-2005
© Author(s) 2005. This work is distributed under
the Creative Commons Attribution 3.0 License.

  10 Oct 2005

10 Oct 2005

Genetic parameter of birth and weaning weights for Friesian calves by using an animal model

H. Atil1, A. S. Khattab2, and L. Badawy3 H. Atil et al.
  • 1Faculty of Agriculture, Ege University, Department of Animal Sciences, Turkey
  • 2Faculty of Agriculture, Tanta University, Department of Animal Production, Egypt
  • 3Ministry of Agriculture, Department of Animal Production, Egypt

Abstract. Birth and weaning weights of 556 Friesian calves by 41 sires out of 318 different dams over a 11 years period were obtained from a herd of Friesian in Sakha Experimental Farm, Ministry of Agriculture, Egypt were used. The records were analyzed by Multiple Trait Likelihood Method (MTDFREML) by using a repeatability animal model (BOLDMAN et al., 1995). Convergence was attained after 699 iterations. The fixed effects included in the model were season and year of calving, parity and sex and the random effects were direct and maternal genetic, permanent maternal environmental and error.

Direct heritability estimates for birth weight (BW) and weaning weight (WW) are 0.28 and 0.13, respectively, while, maternal heritability estimates for the same traits are 0.14 and 0.06, respectively. Repeatability estimates are 0.75 and 0.15 for BW and WW, respectively. Phenotypic and genetic correlations are 0.89 and 0.80, respectively.

Estimates of calve breeding values ranged from −3.12 to 4.11 kg for BW and ranged from −4.10 to 5.11 kg for WW. Sire breeding values ranged from −3.40 to 2.99 kg for BW and ranged from −2.50 to 4.47 kg for WW. Dam breeding values ranged from −6.80 to 5.54 kg for BW and ranged from -6.10 to 6.39 kg for WW.

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