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Overview of Animal Improvement Programs Laboratory

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Presentation on the work of the Animal Improvement Programs Laboratory made to the Department of Animal Science at Louisiana State University in 2007.

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Overview of Animal Improvement Programs Laboratory

  1. 1. 200 7 J.B. ColeJ.B. Cole Animal Improvement Programs Laboratory Agricultural Research Service, USDA, Beltsville, MD john.cole@ars.usda.gov Overview of Animal ImprovementOverview of Animal Improvement Programs LaboratoryPrograms Laboratory
  2. 2. LSU 2007 – Animal Sciences Seminar (2) Cole 200 7 AIPL missionAIPL mission  Conduct research to discover, test, and implement improved genetic evaluation techniques for economically important traits of dairy cattle and goats  Genetically improve efficiency of dairy animals for yield and fitness
  3. 3. LSU 2007 – Animal Sciences Seminar (3) Cole 200 7 AIPL research objectivesAIPL research objectives  Maintain a national database to support research on genetics and management  Provide data for research compatible with industry needs  Increase accuracy of genetic evaluations through improved methodology
  4. 4. LSU 2007 – Animal Sciences Seminar (4) Cole 200 7 AIPL research objectivesAIPL research objectives (cont.)(cont.)  Develop bioinformatic tools to support of quantitative trait locus detection, marker testing, and mapping methods  Improve genetic rankings for overall economic merit  Characterize dairy industry practices
  5. 5. LSU 2007 – Animal Sciences Seminar (5) Cole 200 7 National Dairy Genetic Evaluation ProgramNational Dairy Genetic Evaluation Program AIPL CDCB NAAB PDCA DHI Universities AIPL Animal Improvement Programs Lab., USDA CDCB Council on Dairy Cattle Breeding DHI Dairy Herd Improvement (milk recording organizations) NAAB National Association of Animal Breeders (AI) PDCA Purebred Dairy Cattle Association (breed registries)
  6. 6. LSU 2007 – Animal Sciences Seminar (6) Cole 200 7 DHI statistics (2004)DHI statistics (2004)  4.1 million cows • 97% fat recorded • 93% protein recorded • 93% SCC recorded  25,000 herds  164 cows/herd  21,250 lb (9640 kg)/cow • 3.69% fat • 3.09% (true) protein
  7. 7. LSU 2007 – Animal Sciences Seminar (7) Cole 200 7 U.S. progeny-test bulls (2000)U.S. progeny-test bulls (2000)  Major and marketing-only AI organizations plus breeder-proven  Breeds •Ayrshire 10 bulls •Brown Swiss 53 bulls •Guernsey 15 bulls •Holstein 1436 bulls •Jersey 116 bulls •Milking Shorthorn 1 bull
  8. 8. LSU 2007 – Animal Sciences Seminar (8) Cole 200 7 Traits evaluatedTraits evaluated  Yield (milk, fat, protein volume; component percentages)  Type/conformation  Productive life/longevity  Somatic cell score/mastitis resistance  Fertility • Daughter pregnancy rate (cow) • Estimated relative conception rate (bull)  Dystocia and stillbirth (service sire, daughter)
  9. 9. LSU 2007 – Animal Sciences Seminar (9) Cole 200 7 Genetic trend –Genetic trend – FatFat -125 -100 -75 -50 -25 0 25 1960 1970 1980 1990 2000 Holstein birth year Breedingvalue(kg) Phenotypic base = 424 kg sires cows
  10. 10. LSU 2007 – Animal Sciences Seminar (10) Cole 200 7 Index changesIndex changes Trait Relative emphasis on traits in index (%) PD$ (1971) MFP$ (1976) CY$ (1984) NM$ (1994) NM$ (2000) NM$ (2003) NM$ (2006) Milk 52 27 –2 6 5 0 0 Fat 48 46 45 25 21 22 23 Protein … 27 53 43 36 33 23 PL … … … 20 14 11 17 SCS … … … –6 –9 –9 –9 UDC … … … … 7 7 6 FLC … … … … 4 4 3 BDC … … … … –4 –3 –4 DPR … … … … … 7 9 SCE … … … … … –2 … DCE … … … … … –2 … CA$ … … … … … … 6
  11. 11. LSU 2007 – Animal Sciences Seminar (11) Cole 200 7 Senior research staffSenior research staff

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