Education
- Ph.D., University of Minnesota, 1974
- M.S., University of Minnesota, 1966
- B.S., North Dakota State University, 1962
Research Interests
Research focuses on the information needs of moderate sized dairy farms with particular emphasis on reduced-input management that includes transition to certified organic, intensive grazing, crossbreeding, outwintering and group rearing of calves in a systems approach.
Organic Dairy Research and Outreach at WCROC
Outreach
Programs
Grazing
systems and other reduced-input management techniques.
Memberships
- American Dairy Science Association
- American Society
of Animal Science
- Gamma Sigma Delta (Honorary)
- Land Stewardship
Project
- Midwest Forage Association
- Sustainable Farming Association
Publications (2007-2011)
- Refereed Articles -
Heins, B.J., L.B. Hansen, A.J. Seykora, A.R. Hazel, D.G. Johnson, and J.G. Linn. 2011. Jersey × Holstein crossbreds compared with pure Holsteins for production, mastitis, and body measurements during the first 3 lactations. J. Dairy Sci. 94:501-506.
Heins, B.J., L.B. Hansen, A.R. Hazel, A.J. Seykora, D.G. Johnson, and J.G. Linn. 2010. Birth traits of pure Holstein calves versus Montbeliarde-sired crossbred calves. J. Dairy Sci. 93:2293-2299.
Heins, B.J., L.B. Hansen, A.J. Seykora, A.R. Hazel, D.G. Johnson, and J.G. Linn. 2008. Crossbreds of Jersey x Holstein compared with pure Holsteins for body weight, body condition score, dry matter intake, and feed efficiency during the first one hundred fifty days of first lactation. J. Dairy Sci. 91: 3716-3722.
Heins, B.J., L.B. Hansen, A.J. Seykora, A.R. Hazel, J.G. Linn, D.G. Johnson, and W.P. Hansen. 2008.
Crossbreds of Jersey x Holstein compared to pure Holsteins for production, fertility and body and udder measurements during first lactation. J. Dairy Sci. Vol. 91:1270-1278.
- E-Book Chapter -
Boody, G., P. Gowda, J. Westra, C. van Schaik, P. Welle, Bruce Vondracek, and D. Johnson. 2009. Multifunctional grass farming: Science and policy considerations. Soil and Water Conservation Soc. (published online). http://www.swcs.org/en/publications/farming_with_grass/
- Proceedings, Invited Papers, Research Reports -
Johnson, D.G. 2008. Organic dairy production at the University of Minnesota. Proc., 69th Minnesota Nutrition Conf., Owatonna, MN. Sep. 16-17. p. 33.
Johnson, D.G. 2007. Group feeding dairy calves. Proc., 68th Minnesota Nutrition Conf., Minneapolis, MN. Sep 18-19. p. 4.
- Abstracts -
Hazel, A.R., L.B. Hansen, B.J. Heins, A.J. Seykora, D.G. Johnson, and J.G. Linn. 2010. Jersey-sired and Montbeliarde-sired crossbred heifers compared to pure Holstein heifers for survival, and fertility from birth to first parturition. ADSA/ASAS Joint Meeting, Denver, CO (Oral Presentation, Abstr. 434).
Hazel, A.R., B.J. Heins, L.B. Hansen, A.J. Seykora, D.G. Johnson, J.G. Linn, and J.E. Romano. 2009. Montbeliarde-sired crossbred cows compared to pure Holstein cows for body weight, body condition score, hip height, dry matter intake, and production during the first 150 days of first lactation. ADSA/ASAS Joint Meeting, Montreal, Quebec. Abstr. 743 (Oral presentation).
Heins, B.J., L.B. Hansen, A.R. Hazel, A.J. Seykora, D.G. Johnson, and J.G. Linn. 2009. Calving traits, gestation length, and birth weight of Montbeliarde sires mated to Holstein or Jersey x Holstein crossbreds. ADSA/ASAS Joint Meeting, Montreal, Quebec. Abstr. 742 (Oral presentation).
Heins, B.J., L.B. Hansen, A.R. Hazel, A.J. Seykora, D.G. Johnson, and J.G. Linn. 2009. Jersey x Holstein crossbred cows compared to pure Holstein cows for fertility and survival during the first three lactations. ADSA/ASAS Joint Meeting, Montreal, Quebec. Abstr. 738 (Oral presentation).
Heins, B.J., L.B. Hansen, A.R. Hazel, A.J. Seykora, D.G. Johnson, and J.G. Linn. 2009. Jersey x Holstein crossbred cows compared to pure Holstein cows for production, SCS, and udder measurements during the first three lactations. ADSA/ASAS Joint Meeting, Montreal, Quebec. Abstr. 739 (Oral presentation).
Hazel, A.R., B.J. Heins, L.B. Hansen, A.J. Seykora, D.G. Johnson, J.G. Linn, and J.E. Romano. 2008. Montbeliarde-sired crossbred cows compared to pure Holstein cows for production, SCS, days open, and body condition score during their first two lactations. J. Dairy Sci. 91 (Suppl. 1):597 (Abstr. 762).
Heins, B.J., A.R. Hazel, L.B. Hansen, A.J. Seykora, D.G. Johnson, J.G. Linn, and J.E. Romano. 2008. Jersey × Holstein crossbred cows compared to pure Holstein cows for production, SCS, days open, body condition score, and udder measurements during the first three lactations. J. Dairy Sci. 91 (Suppl. 1):598 (Abstr. 763).
Johnson, D.G., C. Jergenson, and H. Chester-Jones. 2008. Group feeding dairy calves. J. Dairy Sci. 91 (Suppl. 1):464 (Abstr. T187).
Johnson, D.G., J.M. Moynihan, M.J. Forbord, and L. Paine. 2008. Organic dairy short course for ag professionals. J. Dairy Sci. 91 (Suppl. 1):23 (Abstr. T68).
Shane, E.M., M.I. Endres, D.G. Johnson, and J.K. Reneau. 2008. Bedding options for an alternative housing system for dairy cows. J. Dairy Sci. 91 (Suppl. 1):254 (Abstr. W180).
Shane, E.M., M.I. Endres, D.G. Johnson, and C.J. Rosen. 2008. Compost: A potential value-added product for dairy operations? J. Dairy Sci. 91 (Suppl. 1):252 (Abstr. W175).
Heins, B.J., L.B. Hansen, A.J. Seykora, A.R. Hazel, A.G. Linn, and D.G. Johnson. 2007. Crossbreds of Jersey/Holstein compared to pure Holsteins for production, fertility, and udder traits during first
lactation. J. Dairy Sci. 90 (Suppl. 1):420 (Abstr. 556).
Johnson, D.G., B.J. Heins, L.B. Hansen, A.J. Seykora, and J.G. Linn. 2007. Body weight and condition score of four dairy genetic groups in the summer or winter under low-input management. J. Dairy Sci. 90 (Suppl. 1):540 (Abstr. W243).
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