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Abstract

This chapter gives a brief overview of the potential application of DNA technology, specifically DNA-based markers, in livestock breeding, particularly beef cattle breeding. The history of genetic markers, applications of genetic markers (identification of genetic defects, parentage verification...

Author(s)
Harris, E. J.; Marle-Koster, E. van; Kotze, A.
Publisher
Agricultural Research Council, Pretoria, South Africa
Citation
Beef breeding in South Africa, 2010, Ed.2, pp 82-87
Abstract

This chapter discusses the molecular techniques and tests used in animal breeding programmes and includes actual commercial applications in selection and current breeding programmes of beef cattle, sheep, poultry, pigs and dairy cattle.

Author(s)
Nieuwhof, G. J.; Winters, M.; Avendano, S.
Publisher
Wageningen Academic Publishers, Wageningen, Netherlands
Citation
Animal production and animal science worldwide: WAAP book of the year 2007, 2009, pp 195-201
Abstract

This chapter discusses the results and recommendations emanating from recent animal breeding research findings, with special emphasis on South Africa. Focus is given on the implications of advances on overall genetic merit, breeding value, selection indexes, threshold traits and major genes,...

Author(s)
Scholtz, M. M.; Erasmus, G. J.; Roux, C. Z.
Publisher
Agricultural Research Council, Pretoria, South Africa
Citation
Beef breeding in South Africa, 2010, Ed.2, pp 73-81
Abstract

An integral control system to assure meat traceability from producers to consumers was developed. After birth, oxen are identified by a ruminal bolus electronic device (transponder) placed in the animal forestomach until slaughter. The registered transponder number identifies the animals during...

Author(s)
Egozcue, J.; Lavin, P.; Soret, B.; Arana, A.
Publisher
Centre International de Hautes Etudes Agronomiques Méditerranéennes, Montpellier, France
Citation
Mediterranean livestock production: uncertainties and opportunities. Proceedings of the 2nd Seminar of the Scientific-Professional Network on Mediterranean Livestock Farming (RME), Zaragoza, Spain, 18-20 May 2006, 2008, pp 241-245
Abstract

This study was conducted to develop a mixture model maximum likelihood method for half-sib designs and to compare it with regression method on the basis of both actual and simulated data in dairy cattle. The data consisted of 433 proven sons of six sires and 64 microsatellite markers distributed...

Author(s)
Liu, Y.; Jansen, G. B.; Lin, C. Y.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 21, 2002, pp 1-4
Abstract

This paper describes a method to determine pleiotropic effects of a quantitative trait locus (QTL) in a granddaughter design. The method is based on results from single trait analyses for different traits. The covariance between contrasts for different traits in single trait regression analysis is...

Author(s)
Schrooten, C.; Bovenhuis, H.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 21, 2002, pp 1-4
Abstract

A multivariate maximum likelihood method was compared to least squares for interval mapping in a half-sib design. The data consisted of 433 proven sons of six sires and 64 microsatellite markers distributed over 12 chromosomes. Based on comparison to multivariate trait analysis, four maximum joint...

Author(s)
Voort, G. vander; Jansen, G. B.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 21, 2002, pp 1-4
Abstract

This method is presented to obtain estimates of QTL (quantitative trait loci) allele frequencies, and to determine QTL genotypes for both homozygous and heterozygous grandsires. The method is based on determining the QTL allele passed from grandsires to their maternal granddaughters using...

Author(s)
Weller, J. I.; Weller, H.; Kliger, D.; Ron, M.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 21, 2002, pp 1-4
Abstract

The aim of this paper was to use the linkage and linkage disequilibrium (LD) information in order to improve its estimates of posterior probabilities of having a QTL (quantitative trait loci) at midpoints of the marker brackets. This method will be used to map a QTL for fat yield on bovine...

Author(s)
Meuwissen, T. H. E.; Goddard, M. E.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 21, 2002, pp 1-4
Abstract

Meuwissen and Goddard (2000) proposed QTL fine mapping method using linkage disequilibrium (LD) with marker haplotypes. The method assumes that LD resulted from a mutation that occurred in the QTL a number of generations ago. The method is using variance components (VC) to identify an Identity By...

Author(s)
Sabry, A.; Lund, M. S.; Guldbrandtsen, B.
Publisher
Institut National de la Recherche Agronomique (INRA), Montpellier, France
Citation
Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002. Session 21, 2002, pp 1-4

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