Nonadditive and maternal genetic variance estimation
1999
Szwaczkowski, T. (August Cieszkowski Agricultural Univ., Poznan (Poland). Dept. of Genetics and Animal Breeding)
The aim of this review is to present some models and algorithms to estimate the direct additive, non-additive and maternal variance components. In the first part, the general questions on intra and interlocus interactions are shown. Sources of specific maternal (indirect) and cytoplasmic variability are briefly characterised. The next section contains a literature review on the estimates of the genetic variance in different livestock species. The so-called unitrait total merit model (including all known genetic effects) with its variance-covariance structure as well as currently applied approaches to estimate genetic parameters are described. In the final section some practical implications of the estimation of non-additive and maternal variances are discussed.
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