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Projects / Programmes source: ARRS

MAS for fattening, carcass, and meat quality traits in dual purpose cattle

Research activity

Code Science Field Subfield
4.02.00  Biotechnical sciences  Animal production   

Code Science Field
B400  Biomedical sciences  Zootechny, animal husbandry, breeding 
Keywords
cattle, growth, slaughter trait, meat quality, candidate genes
Evaluation (rules)
source: COBISS
Researchers (15)
no. Code Name and surname Research area Role Period No. of publications
1.  05096  MSc Marko Čepon  Animal production  Researcher  2007 - 2010  453 
2.  05098  PhD Peter Dovč  Biotechnology  Researcher  2007 - 2010  906 
3.  28177  Tina Flisar  Animal production  Technician  2007 - 2010  129 
4.  24769  PhD Gregor Gorjanc  Animal production  Researcher  2010  460 
5.  10412  PhD Simon Horvat  Biotechnical sciences  Researcher  2007 - 2010  520 
6.  09755  PhD Milena Kovač  Animal production  Principal Researcher  2007 - 2010  1,187 
7.  16361  PhD Tanja Kunej  Animal production  Researcher  2007 - 2010  875 
8.  19045  PhD Špela Malovrh  Animal production  Researcher  2007 - 2010  863 
9.  28853  MSc Andreja Opara  Animal production  Technician  2007 - 2008  70 
10.  13006  PhD Nežika Petrič  Animal production  Researcher  2007 - 2010  91 
11.  30760  PhD Martina Planinc  Animal production  Junior researcher  2009 - 2010  79 
12.  22445  PhD Andrej Razpet  Biotechnology  Researcher  2007 - 2010  64 
13.  28180  PhD Mojca Simčič  Animal production  Technician  2007 - 2010  369 
14.  27546  PhD Marjeta Žemva  Animal production  Junior researcher  2007 - 2010  81 
15.  00921  PhD Silvester Žgur  Animal production  Researcher  2007 - 2010  459 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0481  University of Ljubljana, Biotechnical Faculty  Ljubljana  1626914  63,757 
Abstract
The main objective of the project is to determine important markers for fattening, carcass, and meat quality traits in dual purpose breeds. There will be up to 500 bulls with measurements on phenotypic values and marker assays. Marker assays will be obtained for their sires and dams whenever possible. Data will be used to define subset of traits describing growth, body composition, and meat (and fat) quality as breeding objectives and to get direct or indirect effect of candidate genes on phenotypic traits selected. For the influential genes or markers, the genotype and allele frequency will be obtained and tested against Hardy-Weinberg equilibrium. These markers will be used together with phenotypic values for genetic evaluation. For this purpose, we intend to develop modules in statistical package VCE 5 in a generalized form in Fortran 95 for various platforms. Software will be tested on four datasets, two from pigs and two for cattle obtained in this project. The final analyses will provide covariance structure with or without marker data included. Comparisons of the results will provide better understanding of inheritance for traits observed and judgement about importance of markers for breeding purposes for meat traits in dual purpose cattle in Slovenia.
Significance for science
Results of the project group serve science in two ways. Our group in cooperation with foreign parners develops software toos for prediction of breeding values and estimation of variance components on selected samples. With development of statistical tools and their implementation in software packages, which are known to be universal, effective and easy to use, we offer to scientists and livestock industry tools that are easy for use without significant preparation. This is demonstrated by a number of citations in scientific papers, as well as by the practical contributions of livestock industry. The second part of the research is giving a contribution to the knowledge of growth and carcass traits in dual-purpose  breeds of cattle, in which genes from dairy populations were introduced recently. Researches on the growth by random regression models was already gained the international response, since it allows to study the overall growth curve for the whole or parts of population specific growth curves for animals (genetically determined), permanent or common environment (eg, herd, litter). Genetic determination of growth and carcass traits was studied in two aspects. In addition to the quantitative approach mentioned above, we studied the effect of individual genes and their point mutations that have known effect on carcass fatness. Relationships are connected to production orientation and production type.
Significance for Slovenia
Most results are obtained from data and material in Slovene populations of cattle, sheep and pigs. Therefore, they can be applied directly into breeding programs. The routine applications require some additional steps like validation and comparison of results with old procedures. Same are already in the process. New knowledges are incorporated in curriculum in animal science classes.
Most important scientific results Annual report 2008, 2009, final report, complete report on dLib.si
Most important socioeconomically and culturally relevant results Annual report 2008, 2009, final report, complete report on dLib.si
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