Genetic analyses of linear profiling data on 3 ‐year‐old Swedish Warmblood horses
This study aimed to investigate the suitability of the linear information for genetic evaluation. Data on 22 conformation traits, 17 movement traits, 14 jumping traits and one temperament trait from 3,410 horses tested between 2013 and 2016 were analysed using an animal model. For conformation traits, the heritabilities ranged from 0.10 for description of hock joint from behind to 0.52 for shape of the neck. For movement traits, the highest heritability (0.54) was estimated for elasticity in trot and the lowest (0.08) for energy in walk. The heritabilities for jumping traits ranged from 0.05 for the ability to focus on the...
Source: Journal of Animal Breeding and Genetics - January 18, 2018 Category: Genetics & Stem Cells Authors: Å. Viklund, S. Eriksson Tags: ORIGINAL ARTICLE Source Type: research

Improving accuracy of genomic prediction in Brangus cattle by adding animals with imputed low ‐density SNP genotypes
Summary Reliable genomic prediction of breeding values for quantitative traits requires the availability of sufficient number of animals with genotypes and phenotypes in the training set. As of 31 October 2016, there were 3,797 Brangus animals with genotypes and phenotypes. These Brangus animals were genotyped using different commercial SNP chips. Of them, the largest group consisted of 1,535 animals genotyped by the GGP‐LDV4 SNP chip. The remaining 2,262 genotypes were imputed to the SNP content of the GGP‐LDV4 chip, so that the number of animals available for training the genomic prediction models was more than doubl...
Source: Journal of Animal Breeding and Genetics - January 18, 2018 Category: Genetics & Stem Cells Authors: F.B. Lopes, X. ‐L. Wu, H. Li, J. Xu, T. Perkins, J. Genho, R. Ferretti, R.G. Tait, S. Bauck, G.J.M. Rosa Tags: ORIGINAL ARTICLE Source Type: research

Following one's scientific compass
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - January 18, 2018 Category: Genetics & Stem Cells Authors: M.F. Rothschild Tags: EDITORIAL Source Type: research

A century later
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - January 18, 2018 Category: Genetics & Stem Cells Authors: J.W. James Tags: EDITORIAL Source Type: research

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Journal of Animal Breeding and Genetics,Volume 135, Issue 1, Page 37-44, February 2018. (Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - December 11, 2017 Category: Genetics & Stem Cells Source Type: research

On individual ‐specific prediction of hidden inbreeding depression load
Summary Inbreeding depression is caused by increased homozygosity in the genome and merges two genetic mechanisms, a higher impact from recessive mutations and the waste of overdominance contributions. It is of major concern for the conservation of endangered populations of plants and animals, as major abnormalities are more frequent in inbred families than in outcrosses. Nevertheless, we lack appropriate analytical methods to estimate the hidden inbreeding depression load (IDL) in the genome of each individual. Here, a new mixed linear model approach has been developed to account for the inbreeding depression‐related ba...
Source: Journal of Animal Breeding and Genetics - December 1, 2017 Category: Genetics & Stem Cells Authors: J. Casellas Tags: ORIGINAL ARTICLE Source Type: research

A comparison of accuracy validation methods for genomic and pedigree ‐based predictions of swine litter size traits using Large White and simulated data
The objective of this study was to compare and determine the optimal validation method when comparing accuracy from single‐step GBLUP (ssGBLUP) to traditional pedigree‐based BLUP. Field data included six litter size traits. Simulated data included ten replicates designed to mimic the field data in order to determine the method that was closest to the true accuracy. Data were split into training and validation sets. The methods used were as follows: (i) theoretical accuracy derived from the prediction error variance (PEV) of the direct inverse (iLHS), (ii) approximated accuracies from the accf90(GS) program in the BLUPF...
Source: Journal of Animal Breeding and Genetics - November 27, 2017 Category: Genetics & Stem Cells Authors: A.M. Putz, F. Tiezzi, C. Maltecca, K.A. Gray, M.T. Knauer Tags: ORIGINAL ARTICLE Source Type: research

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Journal of Animal Breeding and Genetics,Volume 135, Issue 1, Page 5-13, February 2018. (Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - November 27, 2017 Category: Genetics & Stem Cells Source Type: research

Effects of breed proportion and components of heterosis for semen traits in a composite cattle breed
Summary The aim of this study was to estimate the non‐additive genetic effects of the dominance component of heterosis as well as epistatic loss on semen traits in admixed Swiss Fleckvieh, a composite of Simmental (SI) and Red Holstein Friesian (RHF) cattle. Heterosis is the additional gain in productivity or fitness of cross‐bred progeny over the mid‐purebred parental populations. Intralocus gene interaction usually has a positive effect, while epistatic loss generally reduces productivity or fitness due to lack of evolutionarily established interactions of genes from different breeds. Genotypic data on 38,205 SNP o...
Source: Journal of Animal Breeding and Genetics - November 22, 2017 Category: Genetics & Stem Cells Authors: N. Khayatzadeh, G. M észáros, Y. T. Utsunomiya, F. Schmitz‐Hsu, F. Seefried, U. Schnyder, M. Ferenčaković, J. F. Garcia, I. Curik, J. Sölkner Tags: ORIGINAL ARTICLE Source Type: research

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Journal of Animal Breeding and Genetics,Volume 135, Issue 1, Page 54-61, February 2018. (Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - November 22, 2017 Category: Genetics & Stem Cells Source Type: research

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Journal of Animal Breeding and Genetics,Volume 135, Issue 1, Page 45-53, February 2018. (Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - November 22, 2017 Category: Genetics & Stem Cells Source Type: research

Acknowledgements to referees
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - November 22, 2017 Category: Genetics & Stem Cells Tags: Acknowledgements to referees Source Type: research

It is unlikely that genomic selection will ever be 100% accurate
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - November 22, 2017 Category: Genetics & Stem Cells Authors: Daniel Gianola Tags: COMMENTARY Source Type: research

Can we make genomic selection 100% accurate?
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - November 22, 2017 Category: Genetics & Stem Cells Authors: G. Campos, M. Á. Toro Tags: COMMENTARY Source Type: research

Is GxE a burden or a blessing? Opportunities for genomic selection and big data
(Source: Journal of Animal Breeding and Genetics)
Source: Journal of Animal Breeding and Genetics - November 22, 2017 Category: Genetics & Stem Cells Authors: H.A. Mulder Tags: EDITORIAL Source Type: research