John Douglas Roberts Sanz, M., Roberts, J. D., Perfumo, C. J., Alvarez, R. M., Donovan, T., & Almond, G. W. (2007). Assessment of sow mortality in a large herd. Journal of Swine Health and Production, 15(1), 30–36. Pittman, J. S., & Roberts, J. D. (2005). Ringworm in lactating sows. Journal of Swine Health and Production, 13(2), 86–90. Educating the next generation of swine veterinarians: needs and strategies. (2004). Journal of the American Veterinary Medical Association, 224(9), 1422–1425. Roberts, J. D., Deen, J., Johnson, T., & Levine, J. F. (2003). Utilizing alternative indices to compare the conformance of market hogs across three packers. Journal of Swine Health and Production, 11(6), 284–290. Roberts, J. (2002). Charting influenza titers. Journal of Swine Health and Production, 10(1), 39–40. Roberts, J., & Deen, J. (1995). Conformance quality in pig production. Compendium on Continuing Education for the Practicing Veterinarian, 17(10), 1308.