Sökning: "interbull"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet interbull.

  1. 1. Assessing the benefits from joining the International beef cattle genetic evaluation (Interbeef) at SLU’s Interbull Centre : Estonia as a case study

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Tzayhri Osorio Gallardo; [2021]
    Nyckelord :Pilot run; Interbeef; Estonia; reliability; International genetic evaluation; beef cattle; weaning weight;

    Sammanfattning : In 2019 the Interbeef Working Group started offering a new Service: the “Interbeef Pilot run”. The Service, developed and provided by Interbull Centre, consists in an international genetic evaluation for beef breeds using pre-defined genetic parameters. LÄS MER

  3. 2. International genomic evaluation of Brown Swiss and Holstein dairy cattle : multi-trait vs. single-trait approach

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Sallam Mohammed Abdallah Ahmed; [2020]
    Nyckelord :Genotype-based international genomic evaluation; single trait; multi-trait; reliability; MACE proofs; national proofs; selection index; Brown Swiss; Holstein; Gene by environment interaction;

    Sammanfattning : International genomic evaluation for Brown Swiss population known as InterGenomics, was officially launched in 2011 by Interbull Center in Uppsala, Sweden. The routine evaluation is currently carried out using a single-trait approach where estimated breeding value from multi-trait across countries evaluation (MACE EBV) are used as a dependent variable and genetic corre-lations are assumed to be equal to one between countries. LÄS MER

  4. 3. Low heritability-high variance controversy for dairy cattle disease traits

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Maja Winther Iversen; [2014]
    Nyckelord :coefficient of variation; genetic variance; health traits; heritability; progeny groups;

    Sammanfattning : Traits with low heritability estimates such as health and fertility are often assumed to have low genetic variance. However, the heritability is a ratio of additive genetic variance over all variance, and thus, the genetic variation of these traits may only be proportionally small. LÄS MER

  5. 4. International and national genetic evaluation of beef cattle : validation of national genetic evaluation models

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Jenny Ahlqvist; [2010]
    Nyckelord :beef; cattle; genetic; evaluation; international; models; Interbeef; charolais; limousin; data validation;

    Sammanfattning : After a workshop in Kuopio held in June 2006, Interbull decided to go forward with the development of a system for beef international genetic evaluation and a three year project called Interbeef was launched in June 2007. The participating countries are so far limited to Europe and the only trait evaluated at present is adjusted weaning weight (weight at 200 days). LÄS MER

  7. 5. Prospects of performing multiple-country comparison of dairy sires for countries not participating in Interbull international genetic evaluations

    L3-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Anne Torsell; [2007]
    Nyckelord :interbull; dairy cattle; international genetic evaluation;

    Sammanfattning : With the international trade of genetic material of dairy bulls there is a need for genetic evaluations performed internationally. For this reason Interbull and the Interbull centre was established, today 42 countries are members of the organization and 26 countries participating in one or several genetic evaluations. LÄS MER