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United States Department of Agriculture

Agricultural Research Service

Research Project: NATIONAL ANIMAL GERMPLASM PROGRAM (NAGP)

Location: Plant And Animal Genetic Resources Preservation Research Unit

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)

A resource for broadening the genetic base of livestock populations - (Popular Publication)
Blackburn, H.D. 2012. A resource for broadening the genetic base of livestock populations. Popular Publication. 29:4-5.
A simple vitrification method for cryobanking avian testicular tissue - (Peer Reviewed Journal)
Liu, J., Cheng, K.M., Purdy, P.H., Silversides, F.G. 2012. A simple vitrification method for cryobanking avian testicular tissue. Poultry Science. 91:3209-3213.
The animal genetic resource information network (AnimalGRIN) database: A database design and implementation case - (Peer Reviewed Journal)
Irwin, G., Wessel, L.K., Blackburn, H.D. 2012. The animal genetic resource information network (AnimalGRIN) database: A database design and implementation case. Journal of Information Systems Education. 23:19-32.
Effects of alternative cryoprotectants, diluents, straw size and cholesterol addition on cryopreserved rooster sperm - (Abstract Only)
Tarvis, K.M., Purdy, P.H., Graham, J.K. 2012. Effects of alternative cryoprotectants, diluents, straw size and cholesterol addition on cryopreserved rooster sperm. Meeting Abstract. International Congress on Animal Reproduction, Vancouver, BC, Canada, July 29-August 2, 2012.
Isolated Jersey genetics are a treasure trove - (Popular Publication)
Blackburn, H.D. 2012. Isolated Jersey genetics are a treasure trove. Popular Publication. July Issue.
Genetic selection and preservation of genetic diversity - (Peer Reviewed Journal)
Blackburn, H.D. 2012. Genetic selection and preservation of genetic diversity. Reproduction of Domestic Animals. 47:249-254.
185 Cost Effectiveness of Maintaining Research Chicken Populations in Situ Or with Cryopreserved Semen Or Ovaries - (Abstract Only)
Silversides, F.G., Purdy, P.H., Blackburn, H.D. 2012. 185 Cost effectiveness of maintaining research chicken populations in situ or with cryopreserved semen or ovaries. Meeting Abstract. Poultry Science Association, Athens, GA, July 9-12.
Comparative costs of programmes to conserve chicken genetic variation based on maintaining living populations or storing cryopreserved material - (Peer Reviewed Journal)
Silversides, F., Purdy, P.H., Blackburn, H.D. 2013. Comparative costs of programmes to conserve chicken genetic variation based on maintaining living populations or storing cryopreserved material. British Poultry Science. 53:599-607.
Genetic diversity of Ovis aries populations near domestication centers and in the new world - (Peer Reviewed Journal)
Blackburn, H.D., Toishibekov, Y., Toishibekov, M., Welsh, C.S., Spiller, S.F., Brown, M.A., Pavia, S. 2011. Genetic diversity of Ovis aries populations near domestication centers and in the new world. Genetica. 139:1169-1178.
Combining US and Brazilian microsatellite data for a meta-analysis of sheep (Ovis aries) breed diversity: Facilitating the FAO Global Plan of Action for conserving animal genetic resources - (Peer Reviewed Journal)
Paiva, S., Mariante, A., Blackburn, H.D. 2011. Combining US and Brazilian microsatellite data for a meta-analysis of sheep (Ovis aries) breed diversity: Facilitating the FAO Global Plan of Action for conserving animal genetic resources. Journal of Heredity. 102:697-704.
Changing rooster sperm membranes to facilitate cryopreservation - (Abstract Only)
Graham, J.K., Travis, K.M., Purdy, P.H. 2012. Changing rooster sperm membranes to facilitate cryopreservation. Meeting Abstract. International Embryo Transfer Society, Phoenix, AZ. January 10, 2012.
Cryoconservation of animal genetic resources. Animal Production and Health Guidelines No. 12 - (Book / Chapter)
Blackburn, H.D., Godke, R., Purdy, P.H., Hiemstra, S., Woelders, H., Mariante, A., Pizzi, F., Boettcher, P. 2012. Cryoconservation of animal genetic resources. Animal Production and Health Guidelines No. 12. Complete Book. FAO, Rome p. 222.
Ex situ conservation of Holstein-Friesian cattle: Comparing the Dutch, French and USA germplasm collections - (Peer Reviewed Journal)
Danchin-Burge, C., Hiemstra, S.J., Blackburn, H.D. 2011. Ex situ conservation of Holstein-Friesian cattle: Comparing the Dutch, French and USA germplasm collections. Journal of Dairy Science. 94:4100-4108.
Genetic Structure and Diversity among U.S. sheep breeds: Identification of the major gene pools. - (Peer Reviewed Journal)
Blackburn, H.D., Paiva, S.R., Wildeus, S., Getz, W., Stobart, R., Bixby, D., Purdy, P.H., Welsh, C.S., Spiller, S.F., Brown, M.A. 2011. Genetic Structure and Diversity among U.S. sheep breeds: Identification of the major gene pools. Journal of Animal Science. 89:2336-2348.
Inbreeding levels in swine: Ramifications for Genetic Diversity - (Trade Journal)
Blackburn, H.D., Welsh, C.S. 2010. Inbreeding levels in swine: Ramifications for Genetic Diversity. Extension Publications The American Livestock Breeds Conservancy 27:5-6.
The USDA national animal germplasm program and the aquatic species collection. In: T.R. Tiersch and C.C. Green (eds.) Cryopreservation in Aquatic Species, 2nd Edition. World Aquaculture Society, Baton Rouge, LA - (Book / Chapter)
Blackburn, H.D. 2011. The USDA national animal germplasm program and the aquatic species collection. pp. 774-779. In: T.R. Tiersch and C.C. Green (eds.) Cryopreservation in Aquatic Species, 2nd Edition. World Aquaculture Society, Baton Rouge, LA. Book Chapter.
Sperm quality assessment in mammals by flow cytometry In: T.R. Tiersch and C.C. Green (eds.) Cryopreservation in Aquatic Species, 2nd Edition. World Aquaculture Society, Baton Rouge, LA. - (Book / Chapter)
Purdy, P.H. 2011. Sperm quality assessment in mammals by flow cytometry pp. 219-226. In: T.R. Tiersch and C.C. Green (eds.) Cryopreservation in Aquatic Species, 2nd Edition. World Aquaculture Society, Baton Rouge, LA.
The Relationship between Conservation Policy and Aquatic Genetic Resources. In: T.R. Tiersch and C.C. Green (eds.) Cryopreservation in Aquatic Species, 2nd Edition. World Aquaculture Society, Baton Rouge, LA. - (Book / Chapter)
Long, J., Blackburn, H.D. 2011. The Relationship between Conservation Policy and Aquatic Genetic Resources. pp. 977-983. In: T.R. Tiersch and C.C. Green (eds.) Cryopreservation in Aquatic Species, 2nd Edition. World Aquaculture Society, Baton Rouge, LA. Book Chapter.
Options and legal requirements for national and regional animal genetic resources collections - (Peer Reviewed Journal)
Blackburn, H.D., Boettcher, P. 2010. Options and legal requirements for national and regional animal genetic resources collections. Animal Genetic Resources Information. 47:91-100.
Effect of number of motile frozen-thawed boar sperm and number of fixed-time inseminations on fertility in estrous-synchronized gilts - (Peer Reviewed Journal)
Spencer, K.W., Purdy, P.H., Blackburn, H.D., Spiller, S.F., Stewart, T.S., Knox, R.V. 2010. Effect of number of motile frozen-thawed boar sperm and number of fixed-time inseminations on fertility in estrous-synchronized gilts. Animal Reproduction Sciences. 121:259-266.
Reproductive biotechnologies and management of animal genetic resources - (Proceedings)
Blackburn, H.D., Purdy, P.H. 2010. Reproductive biotechnologies and management of animal genetic resources. XIIIth European Poultry Conference, Tours France, August 23-27, 2010. Meeting Proceedings.
Implications of the pH and temperature of diluted, cooled boar semen on fresh and frozen-thawed sperm motility characteristics - (Peer Reviewed Journal)
Purdy, P.H., Tharp, N., Stewart, T., Spiller, S.F., Blackburn, H.D. 2010. Implications of the pH and temperature of diluted, cooled boar semen on fresh and frozen-thawed sperm motility characteristics. Theriogenology. 74:1304-1310.
Meta-analysis of microsatellite data from US and Brazil sheep breeds - (Proceedings)
Paiva, S.R., Blackburn, H.D., Mariante, A.S. 2010. Meta-analysis of microsatellite data from US and Brazil sheep breeds. 9th World Congress on Genetics Applied to Livestock Production, August 1-6, 2010, Leipzig, Germany. Meeting Proceedings.
Ex-situ conservaton of Holstein-Friesian cattle comparing the Dutch, French and USA germplasm collections - (Proceedings)
Danchin-Burge, C., Blackburn, H.D., Hiemstra, S.J. 2010. Ex-situ conservaton of Holstein-Friesian cattle comparing the Dutch, French and USA germplasm collections. 9th World Congress on Genetics Applied to Livestock Production, August 1-6, 2010, Leipzig, Germany. Meeting Proceedings.
The facilitating roles and uses of gene banks in addressing the global plan of action - (Proceedings)
Blackburn, H.D. 2010. The facilitating roles and uses of gene banks in addressing the global plan of action. World Congress on Genetics Applied to Livestock Production August 1-6, 2010 Leipzig, Germany. Meeting Proceedings.
Pedigree Analysis Of Five U.S. Swine Breeds And The Implications For Genetic Conservation - (Peer Reviewed Journal)
Welsh, C.S., Stewart, T.S., Schwab, C., Blackburn, H.D. 2010. Pedigree Analysis Of Five U.S. Swine Breeds And The Implications For Genetic Conservation. Journal of Animal Science. 88:1610–1618.
19 Beef cattle pregnancy rates following insemination with aged frozen angus semen - (Abstract Only)
Carwell, D.B., Pitchford, J.A., Gentry, G.T., Blackburn, H.D., Bondioli, K.R., Godke, R.A. 2009. 19 Beef cattle pregnancy rates following insemination with aged frozen angus semen. Journal Of Reproduction, Fertility And Development 22:167-168.
Inseminating fresh or cryopreserved semen for maximum efficiency: implications for gene banks and industry - (Peer Reviewed Journal)
Blackburn, H.D., Silversides, F., Purdy, P.H. 2009. Inseminating fresh or cryopreserved semen for maximum efficiency: implications for gene banks and industry. Poultry Science. 88:2192-2198.
Evaluation of Glycerol Removal Techniques, Cryoprotectants, and Insemination Methods for Cryopreserving Rooster Sperm with Implications for Breed and/or Line Regeneration - (Peer Reviewed Journal)
Purdy, P.H., Song, Y., Silversides, F.G., Blackburn, H.D. 2009. Evaluation of Glycerol Removal Techniques, Cryoprotectants, and Insemination Methods for Cryopreserving Rooster Sperm with Implications for Breed and/or Line Regeneration. Poultry Science. 88:2184-2191
The fertility of ram sperm held for 24 hours at 5 ºC prior to cryopreservation - (Peer Reviewed Journal)
Purdy, P.H., Moce, E., Stobart, R., Murdoch, W.J., Moss, G.E., Larson, B., Ramsey, S., Graham, J.K., Blackburn, H.D. 2009. The fertility of ram sperm held for 24 hours at 5 ºC prior to cryopreservation. Animal Reproduction Sciences. 118:231-235.
Treating ram sperm with cholesterol-loaded cyclodextrins improves cryosurvival - (Peer Reviewed Journal)
Moce, E., Purdy, P.H., Graham, J.K. 2009. Treating ram sperm with cholesterol-loaded cyclodextrins improves cryosurvival. Animal Reproduction Sciences. 118:236-247.
Population Status Of Major U.S. Swine Breeds - (Proceedings)
Welsh, C.S., Blackburn, H.D., Schwab, C. 2009. Population Status Of Major U.S. Swine Breeds. American Society of Animal Science Western Section, June 16-18, 2009 Fort Collins, CO. Proceedings. 60:42-45
Conservation of Swine Genetics by the National Animal Germplasm Program (NAGP) after One Decade     Reprint Icon - (Popular Publication)
Blackburn, H.D., Stewart, T., Purdy, P.H. 2009. Conservation of Swine Genetics by the National Animal Germplasm Program (NAGP) after One Decade. National Hog Farmer.
Investigation of a novel non-surgical method of artificial insemination for sheep - (Proceedings)
PPurdy, P.H., Blackburn, H.D., Larson, B., Stobart, R. 2009. Investigation of a novel non-surgical method of artificial insemination for sheep. Western section of Amercan Society of animal Science, Fort Collins, CO, June 16-18, 2009.
Comparison of Genetic Diversity Between US and Kazak Sheep Breeds. - (Abstract Only)
Blackburn, H.D., Toishibekov, Y., Toishibekov, M., Welsh, C.S., Spiller, S.F., Brown, M. 2009. Comparison of Genetic Diversity Between US and Kazak Sheep Breeds. Journal of Animal Science 87:401. Annual meeting of the American Society of Animal Science, July 13-17, 2009. Montreal Canada.
Influence of pre-cryopreservation pH and temperature on boar semen quality - (Abstract Only)
Tharp, N.E., Purdy, P.H., Blackburn, H.D., Spiller, S.F., Stewart, T. 2009. Influence of pre-cryopreservation pH and temperature on boar semen quality. Midwest Section American Society of Animal Science, Des Moines, IA, March 16-18, 2008.
Evaluation of new techniques to enhance the use of A.I. on farm. - (Abstract Only)
PPurdy, P.H., Stobart, R.H., Larson, B., Blackburn, H.D. 2009. Evaluation of new techniques to enhance the use of A.I. on farm. American Sheep Industry Association Annual Conference, San Diego, CA, January 21-24, 2009.
Effect of number of motile sperm and number of inseminations using frozen boar semen on fertility in gilts - (Trade Journal)
Spencer, K., Purdy, P.H., Blackburn, H.D., Spiller, S.F., Welsh, C.S., Stewart, T., Breen, S., Taibl, J., Yantis, B., Knox, R. 2008. Effect of number of motile sperm and number of inseminations using frozen boar semen on fertility in gilts. National Hog Farmer. http://nationalhogfarmer.com/genetics-reproduction/artificial-insemination/1215-boar-semen-use/.
Perspectives on cryopreservation, quality control, and artificial insemination of frozen-thawed boar sperm in a national repository - (Proceedings)
Purdy, P.H., Knox, R., Singleton, W., Spencer, K., Spiller, S.F., Stewart, T., Tharp, N., Welsh, C.S., Blackburn, H.D. 2008. Perspectives on cryopreservation, quality control, and artificial insemination of frozen-thawed boar sperm in a national repository. Symposium Proceedings. Midwest Boar Stud Managers Conference, Saint Louis, MO August 7-8, 2008.
Last Modified: 9/2/2014
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