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Abstract

Experiences from international sire evaluation indicate that the multiple-trait across-country evaluation method is sensitive to changes in genetic variance over time. Top bulls from birth year classes with inflated genetic variance will benefit, hampering reliable ranking of bulls. However, none...

Author(s)
Tyrisevä, A. M.; Fikse, W. F.; Mäntysaari, E. A.; Jakobsen, J.; Aamand, G. P.; Dürr, J.; Lidauer, M. H.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 3, pp 2187-2198
Abstract

Residual feed intake (RFI) is a candidate trait for feed efficiency in dairy cattle. We investigated the influence of lactation stage on the effect of energy sinks in defining RFI and the genetic parameters for RFI across lactation stages for primiparous dairy cattle. Our analysis included 747...

Author(s)
Li, B.; Berglund, B.; Fikse, W. F.; Lassen, J.; Lidauer, M. H.; Mäntysaari, P.; Løvendahl, P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 11, pp 9076-9084
Abstract

Trait uniformity, or micro-environmental sensitivity, may be studied through individual differences in residual variance. These differences appear to be heritable, and the need exists, therefore, to fit models to predict breeding values explaining differences in residual variance. The aim of this...

Author(s)
Rönnegǻrd, L.; Felleki, M.; Fikse, W. F.; Mulder, H. A.; Strandberg, E.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2013, 96, 4, pp 2627-2636
Abstract

Using a combined multi-breed reference population, this study explored the influence of model specification and the effect of including a polygenic effect on the reliability of genomic breeding values (DGV and GEBV). The combined reference population consisted of 2986 Swedish Red Breed (SRB) and...

Author(s)
Rius-Vilarrasa, E.; Brøndum, R. F.; Strandén, I.; Guldbrandtsen, B.; Strandberg, E.; Lund, M. S.; Fikse, W. F.
Publisher
Wiley-Blackwell, Berlin, Germany
Citation
Journal of Animal Breeding and Genetics, 2012, 129, 5, pp 369-379
Abstract

Background: The dairy cattle breeding industry is a highly globalized business, which needs internationally comparable and reliable breeding values of sires. The international Bull Evaluation Service, Interbull, was established in 1983 to respond to this need. Currently, Interbull performs...

Author(s)
Tyrisevä, A. M.; Meyer, K.; Fikse, W. F.; Ducrocq, V.; Jakobsen, J.; Lidauer, M. H.; Mäntysaari, E. A.
Publisher
BioMed Central Ltd, London, UK
Citation
Genetics, Selection, Evolution, 2011, 43, 21, pp (24 May 2011)
Abstract

Background: Genetic variation for environmental sensitivity indicates that animals are genetically different in their response to environmental factors. Environmental factors are either identifiable (e.g. temperature) and called macro-environmental or unknown and called micro-environmental. The...

Author(s)
Mulder, H. A.; Rönnegǻrd, L.; Fikse, W. F.; Veerkamp, R. F.; Strandberg, E.
Publisher
BioMed Central Ltd, London, UK
Citation
Genetics, Selection, Evolution, 2013, 45, 23, pp (4 July 2013)

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