Optimising multistage dairy cattle breeding schemes including genomic selection using decorrelated or optimum selection indices

Optimising Multistage Dairy Cattle Breeding Programs with Regard to Genomic Selection

Multistage dairy cattle breeding schemes consisting of 4 selection paths were optimised in order to maximise the genetic gain per year with regard to genomic selection on 2 genomically estimated breeding values differing in costs and accuracy. Results clearly show that the selection of bull dams is the major field of application for low-density genotyping but also emphasise the selection of sir...

Integrating genomic selection into dairy cattle breeding programmes: a review.

Extensive genetic progress has been achieved in dairy cattle populations on many traits of economic importance because of efficient breeding programmes. Success of these programmes has relied on progeny testing of the best young males to accurately assess their genetic merit and hence their potential for breeding. Over the last few years, the integration of dense genomic information into statis...

Designing dairy cattle breeding schemes under genomic selection: a review of international research

High rates of genetic gain canbe achieved through (1) accurate predictions of breedingvalues (2) high intensities of selection and (3) shorter generation intervals. Reliabilities of ~60% are currently achievable using genomic selection in dairy cattle. This breakthroughmeans that selection of animals can happen at a very early age (i.e. as soon as aDNAsample is available) and has opened opportu...

Economic evaluation of progeny-testing and genomic selection schemes for small-sized nucleus dairy cattle breeding programs in developing countries.

In developing countries minimal and erratic performance and pedigree recording impede implementation of large-sized breeding programs. Small-sized nucleus programs offer an alternative but rely on their economic performance for their viability. We investigated the economic performance of 2 alternative small-sized dairy nucleus programs [i.e., progeny testing (PT) and genomic selection (GS)] ove...

Consequences of applying Optimum Contribution Selection on conventional and genomic based breeding schemes