U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Animal Genomics and Improvement Laboratory: Beltsville, MD
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    Careers


        


                    AIP
                        Home
                                    About
                                    Publications
                                    Software
                                    People
                                    Collaborations
                                    Careers
                                    Centennial
                                    Contact
                                    Dairy industry links
                    DirectionsSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Northeast Area Beltsville, Maryland (BARC) Beltsville Agricultural Research Center Animal Genomics and Improvement Laboratory Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications
- IACUC
- Home
- About
- Publications
- Software
- People
- Collaborations
- Careers
- Centennial
- Contact
- Dairy industry links
- Home
- Queries login
- News
- Animal Evaluation lists
- Genotype counts

Title:   Author  item
                                            Tooker, Melvinitem
                                            Cooper, Tabathaitem
                                            DURR, JOAO - Council On Dairy Cattle Breedingitem
                                            Vanraden, Paul
  Submitted to: Interbull Annual Meeting Proceedings
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 8/8/2015
                                    Publication  Date: 8/19/2015
                                    Citation: Tooker, M.E., Cooper, T.A., Durr, J., Van Raden, P.M. 2015. Comparison of domestic and foreign genotypes by country and continent. Interbull Annual Meeting Proceedings. Interbull Bulletin 49:14–18.Interpretive Summary: Genomic and pedigree relationships, inbreeding, pedigree completeness and accuracy, and genomic merit were examined for 44 countries using the national dairy cattle database as of April 2015. Countries were group into geographical continents and showed similar genomic and pedigree relationships of foreign animals to the domestic reference population. Inbreeding levels were also similar across continents. Pedigree completeness was highest for western Europe with 98% and lowest for Latin America with 68%. Breeders in many countries are genotyping animals with high relationship to the North American reference population. Use of foreign genotypes contributes to U.S. genomic evaluations by improving pedigree discovery and identifying harmful recessive haplotypes. Direct evaluation of foreign genotypes allows males and females from many countries to be evaluated together on the same scale, enabling simpler genomic selection. Inclusion of foreign animals in the reference population should make predictions more accurate across environments.
                                Technical Abstract: Genomic evaluations for foreign animals are easily computed, and reliabilities are highest for animals well connected to the domestic reference population and managed in similar environments. Genomic and pedigree relationships, inbreeding, pedigree completeness, pedigree accuracy and genomic merit were examined for 880 797 genotyped animals from 44 countries in the U.S. national database as of April 2015. For genotyped Holsteins from continents other than North America, >60% of sires were North American, and relationships to the reference population were nearly as high for the 203 637 foreign animals as for the 677 160 domestic animals. Pedigrees from all continents were fairly complete. About 94% of sires were reported by breeders, and half of the 6% of sires that were missing were discovered from genotypes. From 2 to 16% of animals had incorrect sires, and >80% of those errors were corrected. Genomic net merit across all continents was higher than conventional parent averages and the domestic genetic base of cows born in 2010. Countries with smaller dairy populations or without advanced data collection and breeding systems can obtain predictions from larger databases and for additional traits by exchanging genotypes across country borders, allowing animals from many countries to be evaluated together on the same scale.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov