References of "Solkner, Johann"
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See detailFirst results in the use of milk mid-infrared spectra in the detection of lameness in Austrian dairy cows
Mineur, Axelle ULiege; Köck, Astrid; Grelet, Clément ULiege et al

in Agriculturae Conspectus Scientificus (in press)

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See detailSerial translocation by means of circular intermediates underlies colour sidedness in cattle.
Durkin, Keith ULiege; Coppieters, Wouter ULiege; Drogemuller, Cord et al

in Nature (2012), 482(7383), 81-4

Colour sidedness is a dominantly inherited phenotype of cattle characterized by the polarization of pigmented sectors on the flanks, snout and ear tips. It is also referred to as 'lineback' or 'witrik ... [more ▼]

Colour sidedness is a dominantly inherited phenotype of cattle characterized by the polarization of pigmented sectors on the flanks, snout and ear tips. It is also referred to as 'lineback' or 'witrik' (which means white back), as colour-sided animals typically display a white band along their spine. Colour sidedness is documented at least since the Middle Ages and is presently segregating in several cattle breeds around the globe, including in Belgian blue and brown Swiss. Here we report that colour sidedness is determined by a first allele on chromosome 29 (Cs(29)), which results from the translocation of a 492-kilobase chromosome 6 segment encompassing KIT to chromosome 29, and a second allele on chromosome 6 (Cs(6)), derived from the first by repatriation of fused 575-kilobase chromosome 6 and 29 sequences to the KIT locus. We provide evidence that both translocation events involved circular intermediates. This is the first example, to our knowledge, of a phenotype determined by homologous yet non-syntenic alleles that result from a novel copy-number-variant-generating mechanism. [less ▲]

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See detailEstimation of additive genetic variance of reproduction traits in Austrian Simmental
Druet, Tom ULiege; Sölkner, Johann; Fürst, Christian et al

in Interbull Bulletin (2001), 27

Heritabilities and genetic correlations were estimated in first, second and all parities for dystocia and stillbirth for the Austrian Simmental population. Method ℜ was applied to estimate the (co ... [more ▼]

Heritabilities and genetic correlations were estimated in first, second and all parities for dystocia and stillbirth for the Austrian Simmental population. Method ℜ was applied to estimate the (co) variance components with a linear animal model. In total, 1,399,990 calving records were analyzed. There were 363,097 first-and 274,486 second-parity records. The largest pedigree file consisted of 1,842,324 animals. Both traits were recorded categorically, 4 and 2 classes for calving ease and stillbirth, respectively. [less ▲]

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See detailImproved genetic evaluation of survival using MACE to combine direct and correlated information from yield and functional traits
Druet, Tom ULiege; Sölkner, Johann; Groen, Ab F. et al

in Interbull Bulletin (1999), 21

Objective of this study was to improve the estimation of survival breeding values using multiple-trait across country evaluation procedures to combine direct information with milk, fat and protein yields ... [more ▼]

Objective of this study was to improve the estimation of survival breeding values using multiple-trait across country evaluation procedures to combine direct information with milk, fat and protein yields and functional traits: milk persistency, somatic cell count, fertility (male and female) and calving ease (direct and maternal). A set of bulls was selected from the Austrian Simmental population and their breeding values were deregressed. An Expectation-Maximization REML procedure based on the multiple-trait across country evaluation equations was used to compute genetic (co)variance components among all traits and to predict breeding values. [less ▲]