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Genetic parameters for birth weight, growth, and litter size in Nordic sheep breeds

Genetic parameters for birth weight, growth, and litter size in Nordic sheep breeds Abstract In this study, genetic parameters were estimated for the Danish populations of Danish Marsk, Finnish Landrace, Gotland Pelt and Spel for birth weight (BW), average daily gain until two months (DG2) and litter size (LS). A multivariate animal model was used for estimation of genetic parameters, including fixed effects, both direct and maternal additive genetic effects, common litter effects and permanent environmental effects. Mean birth weight and DG2 ranged from, respectively, 3.39 kg and 262 g to 4.61kg and 286 g. Litter size ranged from 1.60 to 2.07. Direct heritability for BW ranged from 0.12 to 0.24, and maternal heritability for BW was about 0.23 for all breeds. Direct heritability of DG2 ranged from 0.19 to 0.33. The heritability for LS was between 0.08 and 0.13. The significant genetic correlations between the direct and maternal effect on both BW and DG2 were negative. The genetic correlations between the growth traits and LS were not uniform. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Agri Scand A Animal Sci Taylor & Francis

Genetic parameters for birth weight, growth, and litter size in Nordic sheep breeds

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Genetic parameters for birth weight, growth, and litter size in Nordic sheep breeds

Abstract

Abstract In this study, genetic parameters were estimated for the Danish populations of Danish Marsk, Finnish Landrace, Gotland Pelt and Spel for birth weight (BW), average daily gain until two months (DG2) and litter size (LS). A multivariate animal model was used for estimation of genetic parameters, including fixed effects, both direct and maternal additive genetic effects, common litter effects and permanent environmental effects. Mean birth weight and DG2 ranged from, respectively, 3.39...
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Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1651-1972
eISSN
0906-4702
DOI
10.1080/09064700500456081
Publisher site
See Article on Publisher Site

Abstract

Abstract In this study, genetic parameters were estimated for the Danish populations of Danish Marsk, Finnish Landrace, Gotland Pelt and Spel for birth weight (BW), average daily gain until two months (DG2) and litter size (LS). A multivariate animal model was used for estimation of genetic parameters, including fixed effects, both direct and maternal additive genetic effects, common litter effects and permanent environmental effects. Mean birth weight and DG2 ranged from, respectively, 3.39 kg and 262 g to 4.61kg and 286 g. Litter size ranged from 1.60 to 2.07. Direct heritability for BW ranged from 0.12 to 0.24, and maternal heritability for BW was about 0.23 for all breeds. Direct heritability of DG2 ranged from 0.19 to 0.33. The heritability for LS was between 0.08 and 0.13. The significant genetic correlations between the direct and maternal effect on both BW and DG2 were negative. The genetic correlations between the growth traits and LS were not uniform.

Journal

Acta Agri Scand A Animal Sci – Taylor & Francis

Published: Dec 1, 2005

Keywords: Genetics; growth traits; reproduction; sheep

References

  • Genetic parameters for live weight in Belgian Texel sheep
  • Estimation of (co)variance components by REML in multivariate mixed linear models using average of observed and expected information
  • A user's guide to DMU. A package for analysing multivariate mixed models
  • Genetic parameters for growth traits and litter size in Danish Texel and Shropshire sheep