Genome-wide association analysis is a powerful tool for annotating phenotypic effects on the genome and knowledge of genes and chromosomal regions associated with dairy phenotypes is useful for genome and gene-based selection. Here, we report results of a genome-wide analysis of predicted transmitting ability (PTA) of 31 production, health, reproduction and body conformation traits in contemporary Holstein cows.

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Genome-wide association analysis of thirty one production, health, reproduction and body conformation traits in contemporary U.S. Holstein cows

Inbreeding Effects on Milk Production, Calving Performance, Fertility, and Conformation in Irish Holstein-Friesians

Genetic parameters for claw disorders in Dutch dairy cattle and correlations with conformation traits.

https://biblio.ugent.be/publication/2308888/file/2962937.pdf

Objective measuring technique for teat dimensions of dairy cows

Factors affecting the exchange of genetic material between Nordic and US Holstein populations

The World Holstein-Friesian Federation (WHFF) introduced a type harmonisation programme by almost all countries for the type evaluation of Holstein dairy cows. The quality and robustness of the programme have been demonstrated in the Multiply Across Country Evaluation (MACE) for type evaluations, producing inter-country correlations, which at one time were considered impossible to achieve. The International Committee of Animal Recording (ICAR) has adopted the principle of the WHFF type harmonisation programme and it is logical, considering the quality of the results, to fully integrate the recommendations of both organisations into an international standard for type evaluation, administration and presentation.

S. Hill

Papers

International type evaluation of dairy cattle.