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Abstract

Data on Angus (ANG), Charolais (CHA), Hereford (HER), Limousin (LIM) and Simmental (SIM) cattle were used to estimate genetic parameters for calving difficulty (CD), birthweight (BWT) and gestation length (GL) using threshold-linear models and to examine the effect of inclusion of random effect of...

Author(s)
Jeyaruban, M. G.; Johnston, D. J.; Tier, B.; Graser, H. U.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2016, 56, 5, pp 927-933
Abstract

The temperament of cattle is believed to affect the profitability of the herd through impacting production costs, meat quality, reproduction, maternal behaviour and the welfare of the animals and their handlers. As part of the national beef cattle genetic evaluation in Australia by BREEDPLAN, 50935 ...

Author(s)
Walkom, S. F.; Jeyaruban, M. G.; Tier, B.; Johnston, D. J.
Publisher
CSIRO, Collingwood, Australia
Citation
Animal Production Science, 2018, 58, 2, pp 213-223
Abstract

The Australian experience with across country genetic evaluations of beef cattle performed by BREEDPLAN for Australia and New Zealand is briefly described. Analytical options of BREEDPLAN are outlined including sire by herd interactions, heterogeneous residual variance adjustments, incorporation of ...

Author(s)
Reverter, A.; Johnston, D. J.; Graser, H. U.
Publisher
Wageningen Academic Publishers, Wageningen, Netherlands
Citation
Performance recording of animals: state of the art 2002. Proceedings of the 33rd Biennial Session of ICAR, Interlaken, Switzerland, 26-31 May, 2002, 2003, pp 139-145
Abstract

Background: The major obstacles for the implementation of genomic selection in Australian beef cattle are the variety of breeds and in general, small numbers of genotyped and phenotyped individuals per breed. The Australian Beef Cooperative Research Center (Beef CRC) investigated these issues by...

Author(s)
Boerner, V.; Johnston, D. J.; Tier, B.
Publisher
BioMed Central Ltd, London, UK
Citation
Genetics, Selection, Evolution, 2014, 46, 61, pp (24 October 2014)
Abstract

Data on Angus (ANG), Charolais (CHR), Hereford (HER) and Limousin (LIM) cattle were used to estimate genetic parameters for calving difficulty (CD) and to quantify genetic relationships among CD, birth weight (BWT) and gestation length (GL). Bayesian analysis was carried out using Gibbs sampling to ...

Author(s)
Jeyaruban, M. G.; Johnston, D. J.; Graser, H. U.
Publisher
Association for the Advancement of Animal Breeding and Genetics, Armidale, Australia
Citation
Proceedings of the 19th Conference of the Association for the Advancement of Animal Breeding and Genetics (AAABG), University of Western Australia, Perth, W.A., Australia, 19-21 July, 2011. Breeding objectives: a new paradigm, 2011, pp 119-122
Abstract

Individual daily feed intake and live weights were measured on 469 beef cattle representing 9 sire breeds joined to Brahman cows. The aim of this study was to estimate sire-breed differences for daily feed intake and net feed intake (NFI; a measure of feed efficiency). Progeny of European and...

Author(s)
Moore, K. L.; Johnston, D. J.; Burrow, H. M.
Publisher
Association for the Advancement of Animal Breeding and Genetics, Armidale, Australia
Citation
Application of new genetic technologies to animal breeding. Proceedings of the 16th Conference of the Association for the Advancement of Animal Breeding and Genetics, Noosa Lakes, Queensland, Australia, 25-28 September, 2005, 2005, pp 76-79
Abstract

Data from over 3000 animals from two large sire breed comparison studies were used to estimate breed differences and adjustment factors necessary for the development of multi-breed BREEDPLAN estimated breeding values (EBV) for Angus, Hereford, Limousin and Simmental breeds for several growth...

Author(s)
Johnston, D. J.; Graser, H. U.; Moore, K. L.; Graham, J. F.
Publisher
Association for the Advancement of Animal Breeding and Genetics, Armidale, Australia
Citation
50 years of DNA: Proceedings of the Fifteenth Conference, Association for the Advancement of Animal Breeding and Genetics, Melbourne, Australia, 7-11 July 2003, 2003, pp 269-272

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