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Quantitative trait loci affecting milk production: mapping and utilization for marker assisted selection in dairy and dual purpose cattle.

Objective

The proposal involves mapping QTL affecting milk production and associated traits by selective DNA pooling, in Simmental (dual-purpose); two Holstein anode (multicountry) Brown Swiss (dairy) cattle populations; and in a unique Simmental population produced by crossing a single F1 male (Red Holstein x Simmental) to Simmental as recurrent parent. High-resolution mapping will be carried out for some of the identified QTL, using selective recombinant genotyping within, and identical by descent mapping across the various populations. Allele frequency of QTL alleles, and marker heliotypes associated with positive and negative QTL alleles of active sires will be determined. Theoretical studies needed for use of QTL information for marker-assisted selection (MAS) will be carried out. The end product will be a body of QTL map information and sire marker/QTL information, and of validated methodologies for MAS for milk production traits in dairy and dual-purpose cattle.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

LUDWIG-MAXIMILIANS UNIVERSITY OF MUNICH
Address
Geschwister-scholl-platz 1
80539 Muenchen
Germany

Participants (4)

THE HEBREW UNIVERSITY OF JERUSALEM - THE AUTHORITY FOR RESEARCH AND DEVELOPMENT
Israel
Address
Givat Ram Campus
91904 Jerusalem
THE UNIVERSITY OF MILANO
Italy
Address
Via Festa Del Perdono 7
20122 Milano
UNIVERSITAET FUER BODENKULTUR WIEN
Austria
Address
Gregor Mendel Strasse 33
Wien
UNIVERSITY OF BOLOGNA
Italy
Address
Via Filippo Re 8
40126 Bologna