User:Animalgen

Lawrence Schaeffer
Lawrence (Larry) Raymond Schaeffer was born April 3 1947 in Chicago, Illinois. He is an emeritus professor of animal breeding and genetics at the University of Guelph, Guelph, Ontario, Canada

Life
Dr. Larry Schaeffer was born in Chicago, Illinois, USA, and grew up in the state of Indiana. In 1965 he attended Purdue University in West Lafayette, Indiana where he studied animal sciences and graduated with a Bachelor of Science. In 1969 he moved to Cornell University, Ithaca, New York, where he studied under the leading scientists of Quantitative Genetics, Henderson and Van Vleck. By 1971 be received a Master of Science and in 1973 received his doctorate (PhD).

Schaeffer then moved to the Canadian University, University of Guelph, in Guelph Ontario. Here is built the Centre for Genetic Improvement of Livestock (CGIL) and developed it into one of the leading institutions for research and teaching in the field of modern animal breeding and genetics. On July 7 2011, he was awarded emeritus status.

In his spare time he enjoys taking his dog for a walk and bird watching.

Work
Dr. Schaeffer is a very talented scientist who is able to explain the most difficult and complex facts to his students in a way that enables them to apply it to their work. Since the mid-seventies he has aided European breeders in understanding new mathematical methods and solutions to apply within breeding evaluations. Over the last few years he has also encouraged breeders and breeding companies to include genomic information into their breeding evaluations. Through his many publications he wanted to prevent these ideas from being patented by individual interested parties or organizations, which would make it more difficult to use in breeding evaluations. Dr. Schaeffer is a very experienced programmer and he aided many doctoral, post doctoral and guest scientist with programs to evaluate data in their field.

Starting in 1975 Dr. Schaeffer developed new methodologies in the area of variance component estimation and breeding value estimation in farm animals. From 1975 - 1980s, BLUP methodology with the solution of large systems of equations with the inclusion of all kinship relationships was implemented. After 1990 Dr. Schaeffer developed theoretical and practical implementation in the evaluation of individual control data (test day data) using larger computer capacities. By 1994 the ability to compare international breeding values was ensured through the Multiple Across Country Evaluation Model. This International Breeding Value Estimation was carried out in Sweden. In 2006 the inclusion of genomic information in the form of single-base polymorphisms (SNPs) in breeding value estimation became part of many breeding organizations. Dr. Schaeffer has produced more than 170 works in magazines and books as well as 387 journal articles

Honours and Awards

 * 1988: Lush Award from the Dairy Science Association (USA)


 * 2009: Hermann von Nathusius Medal of the German Society for Breeding Studies


 * Member of the Scientific Advisory Board of Interbull in Sweden

Publications (a small selection)

 * Effects of days dry and days open on lactation production of Holstein dairy Cornell. Cornell Univ. 1971.
 * Factors affecting the accuracy of variance component estimation. 1973.
 * Nonlinear techniques for predicting 305-day lactation production of Holsteins and Jerseys. In: Journal of Dairy Science, 60, 1977, 10, 1636-1644.
 * Strategy for applying genome-wide selection in dairy cattle. Jornal of Animal Brreding and Genetics, 123, 2006, 4, 218-223 (bis 10.02.2017 - 585-mal zitiert).
 * History ef Genetic Evaluation Methods in Dairy CaLarry Schaeffer - Homepage
 * om Regression Models. 2016, 171 S.

Weblinks
Larry Schaeffer - Homepage

Google Scholar

University of Guelph - CGIL