PPT-Genomic Selection in Dairy Cattle

Dairy Cattle 9 million cows in US Attempt to have a calf born every year Replaced after 2 or 3 years of milking Bred via AI Bull semen collected several timesweek Diluted and frozen Popular bulls have 10000 progeny. livestock. Dr Indrasen Chauhan. Scientist, CSWRI, Avikanagar. Tonk-304501. – . B. ased . on individual records, pedigree or progeny performance or family performance. . SI=WT9 +1DMY90. Conventional selection . Part 1. Objectives. Define terms used to describe dairy animals, and identify the parts of a dairy animal.. Compare and contrast the major breeds of dairy cattle.. Recognize the advantages and disadvantages of dairy production.. John B. Cole. Animal Genomics and Improvement Laboratory. Agricultural Research Service, USDA. Beltsville, MD 20705-2350. Introduction. Genomic selection rapidly adopted for purebred cattle . (Hayes et al., 2009; . Selection and Sustainable Cattle Production: Are the Incentives Aligned. ?. Ellen Goddard. Albert . Boaitey. , Anahita . Matin. , Violet . Muringai. , . Getu. . Hailu. (U. of Guelph). Canadian Cattle . Comm. 301. Reasons for changes in SNP set. History. Single list created across breeds. Poor performing SNPs removed. SNP selection criteria changed. Updated assembly changed SNP locations. Additional QTLs as . A “big data” project of the . Animal Genomics and Improvement Laboratory (AGIL). AGIL mission. Discover and develop improved methods for the genetic and genomic evaluation of economically important traits of dairy animals and small ruminants. (Abstract 58). J.B. Cole. 1,*. K.L. Parker Gaddis. 2. , C. Willard. 1. , D.J. Null. 1. , C. Maltecca. 3. , and J.S. Clay. 4. 1 . Animal Genomics and Improvement Laboratory, ARS, USDA, Beltsville, MD, USA. tuberculosis resistance in . dairy cattle. Samantha Wilkinson. 4. th. September 2015. Bovine Tuberculosis Workshop, Glasgow. Bovine tuberculosis (. bTB. ). Bovine. . tuberculosis. :. Host disease genetics and phenotypes. livestock. Dr Indrasen Chauhan. Scientist, CSWRI, Avikanagar. Tonk-304501. – . B. ased . on individual records, pedigree or progeny performance or family performance. . SI=WT9 +1DMY90. Conventional selection . George Wiggans, CDCB Technical Advisor. Highlights of U.S. system. Over half a million animals genotyped in 2016. 67% of AI breedings to genomic bulls. Genomic relationship between genotyped cows and marketed bulls available. - Diagram courtesy of the Holstein Association USA, Inc. Figure 2. Dairy Cow Score Card Dairy Cow Unified Score Card *All traits are listed in priority order. 1. Frame 15% The skeletal parts of t election in dairy cattle. Why . genomic selection works . in . dairy. Extensive historical data available . Well-developed . genetic evaluation program. Widespread use of AI sires. Progeny test programs. Isaac Haagen. Maci Mueller. Council on Dairy Cattle Breeding. Objective. Determine the people, locations, and scope. . of dairy genetic research over the last 5 years. The Database. Methods. Date range: 2012 - 2017 (August). biology – lessons from dairy cattle breeding. Dairy Cattle. 9 million cows in US. Attempt to have a calf born every year. Replaced after 2 or 3 years of milking. Bred via AI. Bull semen collected several times/week. Diluted and frozen.