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Daryl Nydam

Faculty member

Department of Public & Ecosystem Health

Faculty Director
Atkinson Center for Sustainability


Department of Public & Ecosystem Health
Cornell University College of Veterinary Medicine
Ithaca, NY 14853

Office: 607.253.4391

Research Interest

My research interests are at the intersection of production animal agriculture and public health at the population level - with an emphasis on dairy cattle. On-going projects are in the areas of transition cow health and performance, calf infectious diseases (especially zoonoses), and milk quality. I teach a variety of bovine herd health and epidemiology classes as well as provide consulting and clinical service for the dairy industry.


  • B.S. - 1993 BioChemistry (Cum Laude) - University of New York at Geneseo
  • DVM - 1997 College of Veterinary Medicine, Cornell University
  • Ph.D.. - 2002 Epidemiology - Comparative Biomedical Sciences Graduate School, Cornell University

Biography/Professional Experience

  • 1997- 1998 Associate Large Animal Veterinarian - Granville Veterinary Service, Granville, NY
  • 1997- 2004 Relief Veterinarian - C.W. Nydam Veterinary Clinic, P.C., Stamford, NY
  • 1998 - 2001 Veterinary Research Assistant - Section of Epidemiology, Dept. of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY
  • 2001 - 2006 Senior Extension Veterinarian - New York State Animal Health Diagnostic Center, Cornell University, Ithaca, NY
  • 2007 - 2012 Assistant Professor of Dairy Health and Production
  • 2013 – present Director, Quality Milk Production Services; Animal Health Diagnostic Center
  • 2018 – present Professor of Dairy Health and Production; Dept. of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University


1. Nydam DV, Wade SE, Schaaf SL, Mohammed HO.  Number of Cryptosporidium parvum oocysts and Giardia spp. cysts shed by dairy calves after natural infection.  Am J Vet Res 2001; Oct; 62 (10):1612-1615


2. Perkins GA, Yeager A, Erb HN, Nydam DV, Divers TJ, Bowman JL. Survival of foals with experimentally induced Rhodococcus equi infection given hyperimmune plasma containing Rhodococcus equi antibody or normal equine plasma. Vet Therapeutics. 2002; Vol 3, No 3 Fall: 334-346


3. Warnick LD, Nydam DV, Maciel A, Guard CL, Wade SE. Udder cleft dermatitis and Sarcoptic mange in a dairy herd. J Am Vet Med Assoc 2002; Jul 15; 221(2): 273-279


4. Perkins G, Lamb S, Erb HN, Schanbacher B, Nydam DV, Divers TJ. Plasma adrenocorticotropin (ACTH) concentration and clinical response in horses treated for Cushing’s Disease with cyproheptadine and pergolide. Equine Vet J 2002; 34 (7) 679-685


5. Nydam DV, Lindergard GL, Guard CL, Schaaf SL, Wade SE, Mohammed HO.  Serological detection of exposure to Cryptosporidium parvum in cattle by ELISA and evaluation in relation to coprological tests.  Parasitol Res. 2002; Sep; 88(9): 797-803


6. *Wakshlag JJ, Barr SC, Ordway GA, Kalfelz FA, Flaherty CE, Cristensen BW, Sheppard LA, Nydam DV, Davenport GM. Effect of dietary protein on lean body wasting in dogs: correlation between loss of lean mass and markers of proteasome-dependent proteolysis. J Anim Physiol a Anim Nutr. 2003; 87:408-420.


7. *Lindergard G, Nydam DV, Wade SE, Schaff SL, Mohammed HO. A novel multiplex polymerase chain reaction approach for detection of four human infective Cryptosporidium isolates: Cryptosporidium parvum, types H and C, Cryptosporidium canis, and Cryptosporidium felis in fecal and soil samples. J Vet Diag Invest 2003; 15: 262-267


8. Perkins G, Nydam DV, Flaminio J., Ainsworth DM. Serum IgM concentrations in normal fit horses and in horses with lymphoma or other medical conditions. J Vet Intern Med. 2003; 17(3):337-342.


9. *Lindergard G, Nydam DV, Wade SE, Schaaf SL, Mohammed HO. The sensitivity of PCR detection of Cryptosporidium oocysts in fecal samples using two DNA extraction methods. Mol Diagn. 2003;7(3):147-53


10. *Wakshlag JJ, Cooper RR, Wakshlag RR, Kallfelz FA, Barr SC, Nydam DV, Dimauro S. Biochemical evaluation of mitochondrial respiratory chain enzymes in canine skeletal muscle. Am J Vet Res 2004; 65 (4): 480 - 484


11. *Schatzberg SJ, Cutter-Schatzberg K, Nydam DV, Barrett J, Penn R, Flanders J, deLahunta A, Lin L, Mignot E. Case study: The effect of hypocretin replacement therapy in a 3 year old Weimaraner with narcolepsy. J Vet Intern Med 2004; 18(4):586-8


12. *Gardner CE, Nydam DV, Ellis RG, Kelsey S, McDonough PL, Warnick LD. Management of an outbreak of salmonellosis on a commercial calf raising unit. Bov Pract 2004; Vol 38, No. 2: 147-154.


13. Gelzer ARM, Attmann T, Radicke D, Nydam DV, Candinas R, Barton M, Lutter G, Effects of Acute Systemic Endothelin Receptor Blockade on Cardiac Electrophysiology in Vivo. J Cardiovasc Pharmacol. 2004; Nov;44(5):564-570.


14. *Mitchell HM, Nydam DV, Reyher KK, Gilbert RO. The Opportunities Map at Cornell University: Finding Direction in Dairy Production Medicine. J Vet Med Educ. 2004; Winter;31(4):381-4


15. Nydam DV, Lindergard GL, Santucci F, Schaff SL, Wade SE, Mohammed HO. Risk of Cryptosporidium parvum and Cryptosporidium hominis in dairy cattle in a New York watershed. Am J Vet Res 2005; 66 No. 3, 413-417.


16. Stokol T and Nydam DV. Effect of anticoagulant, storage temperature, and duration of storage on non-esterified fatty acid and B-hydroxybutyrate concentrations from dairy cattle. J Dairy Sci 2005; 88 (9): 3139-44.


17. *Trotz-Williams LA, Martin SW, Martin D, Duffield T, Leslie KE, Nydam DV, Peregrine AS. Multiattribute evaluation of two simple tests for the detection of Cryptosporidium parvum oocysts in calf faeces. Vet Parasit 2005; 134: 15-23


18. Nydam DV and Mohammed HO. Quantitative risk assessment of Cryptosporidium spp. infection in calves on dairy farms. J Dairy Sci 2005; 88(9): 3932-3943


 19. *Gardner RB, Nydam DV, Mohammed HO, Ducharme NG, Divers TJ. Elevations in Serum Gamma Glutamyl Transferase Values in Horses with Right Dorsal Displacements of the Large Colon. J Vet Intern Med 2005; 19(5):761-764


20. Flaminio MJBF, Nydam DV, Sebastian M, Bernard WV, Hillegas JM, Matychak MB. The Mare Reproductive Loss Syndrome (MRLS) and the Eastern Tent Caterpillar: Immunological Testing of Aborting Mares. Intern J App Res Vet Med  2005; Vol 3 No. 3: 207-216


21. *Trotz-Williams LA, Martin DS, Gatei W, Cama V, Peregrine AS, Martin SW, Nydam DV, Jamieson F, Xiao L. Genotype and subtype analyses of Cryptosporidium isolates from dairy calves and humans in southern Ontario. Parasit Res 2006 Sep;99(4):346-52


22. *Bicalho RC, Cheong SH, Warnick LD, Nydam DV, Guard CL.  The effect of digit amputation or arthrodesis surgery on culling and milk production in Holstein dairy cows. J Dairy Sci 2006; Jul;89(7):2596-602


23. *Figueiredo MD, Nydam DV, Perkins GA, Mitchell HM, Divers TJ. Prognostic value of blood lactate concentration measured cow-side using a portable clinical analyzer in Holstein dairy cattle with abomasal disorders. J Vet Intern Med 2006; 20: 1463-1470


24. Stokol T and Nydam DV. Effect of hemolysis on non-esterified fatty acid and B-hydroxybutyrate concentrations in bovine blood. J Vet Diagn Invest 2006; Sep; 18: 466-469


25. *Wilke MM, Nydam DV, Nixon AJ. Enhanced early chondrogenesis in articular defects following arthroscopic mesenchymal stem cell implantation in an equine model. J Ortho Res. 2007 Jul; 25(7):913-925


26. Flaminio MJ, Borges AS, Nydam DV, Hecker R, Horohov DW, Matychak MB. The effect of CpG-ODN on antigen presenting cells of the foal. J Immun Based Therapies Vac. 2007; Jan 25;5(1):1


27. *Ziegler PA, Santucci F, Lindergard G, Nydam DV, Wade SE, Schaaf S, Chang YF, Mohammed HO.  Evaluation of Polymerase chain reaction diagnosis of  Cryptosporidium spp. in Dairy Cattle and Wildlife. Vet Ther. 2007 Summer;8(2):148-59


28. *Trotz-Williams LA, Martin SW, Leslie KE, Duffield T, Nydam DV, Peregrine AS. Calf-level risk factors for neonatal diarrhea and shedding of Cryptosporidium parvum in Ontario dairy calves: Prev Vet Med. June 2007; 82: 12-28


29. *Gardner RB, Nydam DV, Juna JA, Bicalho M, Matychak MB, Flaminio MJ. Serum opsonization capacity, phagocytosis and oxidative burst activity in neonatal foals in the intensive care unit. J Vet Intern Med. 2007; July/August, 21: 797-805


30. *Trotz-Williams LA, Martin SW, Leslie KE, Duffield T, Nydam DV, Peregrine AS. Association between management practices and within-herd prevalence of Cryptosporidium parvum shedding on dairy farms in southern Ontario. Prev Vet Med. Jan 2008; 83: 11-23


31. *Lanzas C, Warnick LD, Ivanek R, Ayscue P, Nydam DV, Gröhn YT. The risk and control of Salmonella outbreaks in calf-raising operations: a mathematical modeling approach. Vet Res. 2008; 39(6):61


32. Flaminio MJBF, Nydam DV, Marquis H, Matychak MB, Giguère S. Foal monocyte-derived dendritic cells become activated upon Rhodococcus equi infection. Clin Vaccine Immunol. 2009 Feb 16(2): 176-83


33. Nydam CW, Nydam DV, Guard CL, Gilbert RO. The Summer Dairy Institute model: Teaching dairy production medicine to entry-level veterinarians. J Vet Med Educ. 2009 Spring; 36(1):16-21


34. Mohammed HO, Stipetic K, McDonough PL, Gonzalez RN, Nydam DV, Atwill ER. Identification of potential on-farm sources of Listeria monocytogenes in herds of dairy cattle. Am J Vet Res. 2009 Mar;70(3): 383-8


35. *Burton AJ, Nydam DV, Olivett TL, Divers TJ. Prognostic Indicators for Survival of downer cows managed with a flotation tank system in a referral hospital. J Am Vet Med Assoc. 2009 May 1;234(9):1177-82


36. *Linden TC, Nydam DV, Bicalho RC. Calf birth weight and its association with calf and cow survivability, disease incidence, reproductive performance, and milk production. J Dairy Sci. 2009 Jun;92(6):2580-8


37. *Ollivett TL, Nydam DV, Bowman DD, Zambriski JA, Bellosa ML, Linden TC, Divers TJ. Effect of nitazoxanide on cryptosporidiosis in experimentally infected neonatal dairy calves. J Dairy Sci. 2009; 92, 1643-1648


38. *Cummings KJ, Warnick LD, Cripps CJ, Gröhn YT, McDonough PL, Nydam DV, Alexander KA, Reed KE. The Incidence of Salmonellosis among Dairy Herds in the Northeastern United States. J Dairy Sci. 2009 Aug;92(8):3766-74


39. Morkel P, Radcliffe RW, Jago M, DuPreez P, Flaminio MJBF, Nydam DV, Taft A, Lain D, Miller MM, Gleed RD. Acid-Base balance and ventilation during sterna and lateral recumbency in field immobilized black rhinoceros (Diceros bicornis bicornis) receiving oxygen insufflations. J Wildl Dis. 2010 Jan;46(1):236-45


40. *Ospina PA, Nydam DV, Stokol T, Overton TR. Evaluation of NEFA and β-hydroxybutyrate (BHB) in transition dairy cattle in the Northeast USA. Critical thresholds for prediction of clinical diseases. J Dairy Sci. 2010, 93: 546-554

++ Awarded the most cited manuscript in the Journal of Dairy Science 2010-2014 by the American Dairy Science Association


41. *Burton AJ, Nydam DV, Long ED, Divers TJ. Clinical and pathological findings associated with bovine lymphosarcoma: A retrospective study of 112 cases.  J Vet Intern Med. 2010, 24(4), 960-964


42. *Ospina PA, Nydam DV, Stokol T, Overton TR. Associations of elevated NEFA and β-hydroxybutyrate concentrations with early lactation reproductive performance and milk production  in transition dairy cattle in the Northeast United States. J Dairy Sci. 2010, 93: 1596-1603


43. *Leone WM, Nydam DV, Welcome F, Warnick LD. Effects of removing cows from chronic oxytocin use during lactation. Bov Pract. 2010, 44(1) 83-87


44. *Ospina PA, Nydam DV, Stokol T, Overton TR. Association between the proportion of sampled transition cows with elevated NEFA and β-hydroxybutyrate (BHBA) and disease incidence, pregnancy rate, and milk production at the herd-level. J Dairy Sci. 2010, 93: 3595-3601


45. *Burton AJ, Nydam DV, Dearen TK, Mitchell K, Bowman DD and Xiao L.  The prevalence of Cryptosporidium and identification of the Cryptosporidium horse genotype from foals in New York State. Vet Parasit. 2010 Nov 24;174(1-2):139-44


46. Kornreich B, Enyeart M, Jesty S, Nydam DV, Divers TJ. The effects of pentoxifylline on equine platelet aggregation. J Vet Intern Med. 2010, 25(5):1196-202


47. *Burton AJ, Nydam DV, Jones G, Zambriski JA, Linden TC, Cox G, Davis R, Brown A, Bowman DD. Antibody responses to a Cryptosporidium parvum rCP15/60 vaccine. Vet Parasit. 2011 Jan 10;175(1-2):178-81


48. *Bellosa ML, Nydam DV, Liotta JL, Zambriski JA, Linden TC, Bowman DD. A Comparison of Fecal Percent Dry Matter and Number of Cryptosporidium parvum Oocysts Shed to Observational Fecal Consistency Scoring in Dairy Calves. J Parasitol. 2011 97(2): 349-351


49. *Cheong SH, Nydam DV, Crosier BM, Galvao KN, Gilbert RO. Cow and herd level risk factors for subclinical endometritis in lactating Holstein cows. J Dairy Sci. 2011, 94: 762-770


50. *Galvão KN‍‍, Pighetti GM, Cheong SH, Nydam DV, Gilbert RO. Association between interleukin-8 receptor (CXCR1) polymorphism and disease incidence, production, reproduction, and survival in Holstein cows. J Dairy Sci. 2011 94(4):2083-2091


51. *Dawson DR, Nydam DV, Price CT, Graham JE, Cynamon MH, Divers TJ, Felippe MJ. Effects of opsonization of Rhodococcus equi on bacterial viability and phagocyte activation. Am J Vet Res 2011 Vol 72: 1465-1475


52. *Soberon F, Ryan CM, Nydam DV, Galton DM, Overton TR. The Effects of Increased Milking Frequency during Early Lactation on Milk Yield and Milk Composition on Commercial Dairy Farms. J Dairy Sci. 2011, 94:4398-4405


53. *McArt JAA, Nydam DV, Ospina PA, Oetzel GR. A field trial on the effect of propylene glycol on milk yield and resolution of ketosis in fresh cows diagnosed with subclinical ketosis. J Dairy Sci. 2011, 94: 6011-6020


54. *Huzzey JM, Nydam DV, Grant RJ, Overton TR. Associations between prepartum cortisol, haptoglobin, and non-esterified fatty acids and postpartum health status. J Dairy Sci. 2011, 94: 5878-5889


55. Bicalho MLS, Santos TMA, Nydam DV, Machado VS, RC BicalhoEvaluation of bacteriophages oral administration in neonatal calves: phage survivability, impact on fecal Escherichia coli and calf health. Livestock Sci. 2011, 144(3): 294-299


56. Kornreich BG, Craven M, McDonough SP, Nydam DV, Simpson KW. Fluorescent in situ hybridization for the identification of bacterial species in archival heart valve sections of canine bacterial endocarditis. J Comp Path. 2012, 146(4):298-307


57. *Cheong SH, Nydam DV, Galvao KN, Crosier BM, Ricci A, Caixeta L, Fraga M, Gilbert RO. Use of urinary reagent test strips for diagnosis of endometritis in dairy cows. Therio. 2012, 77(5):858-64


58. Morkel P, Miller MM, Jago M, Radcliffe RW, duPrez P, Olea-Popelka F, Nydam DV, Taft A, Gleed RD. Serial Temperature Monitoring and Comparison of Rectal and Muscle Temperatures in Immobilized Free-Ranging Black Rhinoceros (Diceros bicornis). J Zoo Wild Med. 2012, 43(1): 120-124


59. *Ness SAL, Bain FT, Zantingh AJ, Gaughan EM, Story MR, Divers TJ, Nydam DV. Ultrasonographic visualization of colonic mesenteric vasculature as an indicator of large colon right dorsal displacement and/or 180 degree volvulus in horses. Can Vet J. 2012, 53: 378-382


60. *Burton AJ, Nydam DV, Mitchell K, Bowman DD. The prevalence of Cryptosporidium shedding in alpaca crias and their dams in the Northeastern USA. J Am Vet Med Assoc. 2012, 241(4):496-8


61. *Ollivett TL, Nydam DV, Linden TC, Bowman DD, Van Amburgh MA. Effect of nutritional plane on health and performance in dairy calves after experimental infection with Cryptosporidium parvumJ Am Vet Med Assoc. 2012, 241(11):1514-1520

++ Awarded in Top 10 papers of 2012 in food animal medicine by the American College of Veterinary Internal Medicine


62. *Cheong SH, Nydam DV, Galvao KN, Crosier BM, Gilbert RO. Effects of diagnostic low-volume uterine lavage shortly before first service on reproductive performance, culling, and milk production in dairy cows. Therio. 2012, 77(6): 1217-22


63. *Ospina PA, Nydam DV, DiCiccio TJ. The risk ratio, an alternative method to the odds ratio for estimating the association between multiple risk factors and a dichotomous outcome.  J Dairy Sci. 2012, 95: 2576-2584


64. *McArt JAA, Nydam DV, Oetzel GR. A field trial on the effect of propylene glycol on displaced abomasum, removal from herd, and reproduction in fresh cows diagnosed with subclinical ketosis. J Dairy Sci. 2012, 95: 2505-2512


65. Miller MM, Jago M, Radcliffe RW, Morkel P, Olea-Popelka F, Sefton J,  duPrez P, Taft A, Nydam DV, Gleed RD. Capture related hypoglycemia and recovery in free-ranging Black Rhinoceros (Diceros bicornis). J Wildl Dis. 2012, Jul;48(3):840-2


66. *McArt JAA, Nydam DV, Oetzel GR. Epidemiology of subclinical ketosis in early lactation dairy cattle. J Dairy Sci. 2012, 95: 5056-5066

++ Awarded among the most cited manuscripts in the Journal of Dairy Science 2012-2015 by the American Dairy Science Association


67. *Warren AL, Stokol T, Hecker KG, Nydam DV. Storage-associated changes in the bovine hemogram with the ADVIA 120 hematology analyzer. Comp Clin Path. 2013, 22: 1235-1240


68.*Huzzey JM, Nydam DV, Grant RJ, Overton TR. The effects of overstocking Holstein dairy cattle during the dry period on cortisol production and energy metabolism. J Dairy Sci. 2012, 95: 4421-4433


69. *Zambriski JA, Maves RC, Nydam DV, Ayvar V, Cepeda D, Castillo R, Diaz-Pino A, Saito M, Gilman RH. Effect of storage temperature and sample volume on Brucella melitensis isolation from goat milk. Intern J Trop Dis and Hygen. 2012, 2(3):207-213


70.*McArt JAA, Nydam DV, Oetzel GR. Dry period and parturient predictors of early lactation hyperketonemia in dairy cattle. J Dairy Sci. 2013, 96: 198-209


71. *Zambriski JA, Nydam DV, Bowman DD, Bellosa ML, Burton AJ, Linden TC, Liotta JL, Ollivett TL, Tondello-Martins L, Mohammed HO. Description of fecal shedding of Cryptosporidium parvum oocysts in experimentally challenged dairy calves. Parasit Res. 2013, Mar; 112(3) 1247-54


72. *Croushore WS, Ospina PA, Welch DC, Zawisza DJ, Nydam DV. The association between β-hydroxybutyrate concentration at diagnosis of left displaced abomasums in dairy cows and removal from the herd post-surgical correction. J Am Vet Med Assoc. 2013, 243(9): 1329-33


73. *Zambriski JA, Nydam DV, Wilcox ZJ, Bowman DD, Mohammed HO, Liotta JL. Cryptosporidium parvum: Determination of ID50 and the dose-response relationship in experimentally challenged dairy calves. Vet Parasit. 2013, 197(1-2):104-12


74. *Teixeira AGV, Bicalho MLS, Machado VS, Oikonomou G, Kacar C, Foditsch C, Young R, Knauer WA, Nydam DV, Bicalho RC. Heat and ultraviolet light treatment of colostrum and hospital milk: Effects on colostrum and hospital milk characteristics and calf health and growth parameters. Vet J. 2013, Aug;197(2):175-81


75. *Ospina PA, McArt JA, Overton TR, Stokol T, Nydam DV. Using non-esterified fatty acids and β-hydroxybutyrate concentrations during the transition period for herd-level monitoring of increased risk of disease and decreased reproductive and milking performance. Vet Clin N Am. 2013, Vol 29: 387-412


76. *McArt JAA, Nydam DV, Oetzel GR, Overton TR, Ospina PA. Elevated non-esterified fatty acids and β-hydroxybutyrate and their association with transition dairy cow performance: A review. Vet J. 2013, 198: 560-570

++ Awarded among the 5 most cited manuscripts in The Veterinary Journal 2014-2015 by Elsevier


77. *Jackson DS, Nydam DV, Altier C. Prevalence and risk factors for brucellosis in domestic yak, Bos grunniens, and their herders in a transumant pastoralist system of Dolpo, Nepal. Prev Vet Med. 2014, 113(1): 47-58


78. *Heins BD, Nydam DV, Woolums AR, Berghaus RD, Overton MW. Comparative efficacy of enrofloxacin and tulathromycin for treatment of pre-weaning respiratory disease in dairy heifers. J Dairy Sci. 2014, 97: 372-382


79. *Radcliffe RW, Morkel P, Jago M, Taft A, duPrez P, Miller MA, Candra D, Nydam DV, Berry JS, Gleed RD. Pulmonary dead space in free-ranging, immoblized black rhinoceroses (Diceros bicornis) in Nambia. J Zoo Wildl Med. 2014, 45(2): 263-271


80. *Yasui T, McCann K, Gilbert RO, Nydam DV, Overton TR. Associations of cytological endometritis with energy metabolism and inflammation during the periparturient period and early lactation in dairy cows. J Dairy Sci. 2014, 97: 2763-2770


81. *Vergara CF, Döpfer D, Cook NB, Nordlund KV, McArt JAA, Nydam DV, Oetzel GR. Risk factors for postpartum problems in dairy cows. J Dairy Sci. 2014, 97: 4127-4140


82. *McArt JAA, Nydam DV, Oetzel GR, Guard CL. Economic analysis of hyperketonemia testing and propylene glycol treatment strategies in early lactation dairy cattle. Prev Vet Med. 2014, Nov 1; 117(1): 170-179


83. *Yasui T, McArt JAA, Ryan CM, Gilbert RO, Nydam DV, Valdez F, Griswold K, Overton TR. Effects of chromium propionate supplementation during the periparturient period and early lactation on metabolism, performance, and cytological endometritis in dairy cows. J Dairy Sci. 2014, 97: 6400-10


84. Werner B, Moroni P, Gioia G, Lavin-Alconero L, Yousaf A, Charter ME, Carter B, Bennett J, Nydam DV, Welcome F, Schukken YH. Genotypic identification of Lactococcus lactis subsp. lactis and association with discrepancies of bacteriological results during intramammary infections on different dairy farms. J Dairy Sci. 2014, 97: 6964-6969


85. Operario DJ, Bristol LS, Liotta J, Nydam DV, Houpt ER.  Correlation between diarrhea severity and oocyst count via quantitative PCR or Fluorescence microscopy in experimental cryptosporidiosis. Am J Trop Med Hyg. 2015, Jan 7;92(1):45-9


86. Fulton RW, d’Offay JM, Eberle R, Moeller RB, Van Campen H, O’Toole D , Chase C, Miller MM, Sprowls R, Nydam DV. Bovine Herpesvirus-1: Evaluation of Genetic Diversity of Subtypes Derived from Field Strains of Varied Clinical Forms and Their Relationship to Vaccine Strains. Vaccine. 2015, Jan 15;33(4):549-58


87. McArt JAA, Nydam DV, Overton MW. Hyperketonemia in early lactation dairy cattle: a deterministic estimate of component and total cost per case. J Dairy Sci. 2015, 98 (3): 2043–2054


88. *Caixeta LS, Ospina PA, Capel MB, Nydam DV. The association of subclinical hypocalcemia, negative energy balance, and disease with body weight change during the first 30 days postpartum in dairy cows milked with automatic milking systems. Vet J. 2015, May; 204 (2):150-6


89. *Mann S, Leal Yepes FA, Overton TR, Wakshlag JJ, Lock AL, Ryan CM, Nydam DV. Dry period plane of energy: effects on feed intake, energy balance, milk production and composition in transition dairy cows. J Dairy Sci. 2015, 98:3366-82


90. *Huzzey JM, Mann S, Nydam DV, Grant RJ, Overton TR. Associations of peripartum analytes of stress, inflammation, and negative energy balance with milk yield and reproductive performance in Holstein dairy cows. Prev Vet Med. 2015, Jul 1;120 (3-4):291-7


91. *Streeter RM, Struble AM, Nydam DV, Bauer J, Castellano M, Todhunter RJ, Cummings B, Wakshlag JJ. The associations between serum adiponectin, leptin, c-reactive protein, and insulin and serum long-chain omega-3 fatty acids in Labrador retrievers. Vet Med: Res Reports. 2015, 6: 103-110


92. *Duplessis M, Mann S, Nydam DV, Girard CL, Pellerin D, Overton TR. Folates and vitamin B12 in colostrum and milk from dairy cows fed different energy levels during the dry period. J Dairy Sci. 2015, 98: 5454-5459


93. Plumed-Ferrer C, Barberio A, Franklin R, Werner B, McDonough P, Bennett J, Gloria G, Rota N, Welcome F, Nydam DV, Moroni P. Antimicrobial susceptibilities and RAPD-PCR fingerprint characterization of Lactococcus lactis subsp. lactis and Lactococcus garvieae isolated from bovine intramammary infection. J Dairy Sci. 2015, 98: 6216–6225


94. *McCarthy MM, Mann S, Nydam DV, Overton TR, McArt JAA. Concentrations of non-esterified fatty acids and β-hydroxybutyrate in dairy cows are not well correlated during the transition period. J Dairy Sci. 2015, 98: 6284–6290


95. *Ollivett TL, Caswell J, Nydam DV, Duffield T, Leslie KE, Hewson J, Kelton D.  Thoracic ultrasonography and bronchoalveolar lavage fluid analysis in Holstein calves affected with subclinical lung lesions.  J Vet Intern Med. 2015 Nov; 29(6):1728-34


96. *Mann S, Leal Yepes FA, Duplessis M, Wakshlag JJ, Overton TR,  Cummings B, Nydam DV. Dry period plane of energy: effects on glucose tolerance in transition dairy cows. J Dairy Sci. 2016, Jan;99(1):701-17


97. *Newman A, Mann S, Nydam DV, Overton TR, Behling-Kelly E. Impact of dietary plane of energy during the dry period on lipoprotein parameters during the transition period in dairy cattle. J An Phys An Nutr. 2016 Feb;100(1):118-26


98. *Mann S, Leal Yepes FA, Overton TR, Lock A, Lamb S, Wakshlag JJ, Nydam DV. Effect of dry period dietary energy level in dairy cattle on volume, concentration of IgG, insulin, and fatty acid composition of colostrum. J Dairy Sci. 2016; 99(2):1515-26


99. *Hernandez D, Nydam DV, Godden SM, Bristol LS, Kryzer A, Ranum J, Schaefer D. Brix refractometry in serum as a measure of failure of passive transfer compared to measured immunoglobulin G and total protein by refractometry in serum from Holstein and Jersey calves.  Vet J. 2016 May;211:82-7


100. *Mann S, Abuelo A, Nydam DV, Leal Yepes FA, Overton TR, Wakshlag JJ. Insulin signaling and skeletal muscle atrophy and autophagy in transition dairy cows either overfed energy or fed a controlled energy diet prepartum. J Comp Physio B. 2016 186(4):513-25


101. Gioia G, Werner B, Nydam DV, Moroni P. Validation of a mycoplasma molecular diagnostic test and distribution of Mycoplasma species in bovine milk among New York dairy farms. J Dairy Sci. 2016; 99(6):4668-4677


102. *Mann S, Nydam DV, Lock A, Overton TR, McArt JAA. Association of milk fatty acids with early lactation hyperketonemia and elevated concentration of nonesterified fatty acids. J Dairy Sci. 2016 Jul; 99(7):5851-7


103. *Mann S, Abuelo A, Nydam DV, Leal Yepes FA, Overton TR, Wakshlag JJ. Insulin signaling, inflammation, and lipolysis in transition dairy cows either overfed energy during the prepartum period or fed a controlled energy diet. J Dairy Sci. 2016 Aug;99(8):6737-52


104. Ospina PA, Rota N, Locatelli C, Colombo L, Pollera C, Giacinti G, Bronzo V, Casula A, Arpinelli A, Brossette V, Facchi M, Patelli A, Ruggeri A, Barberio A, Potenza G, Nydam DV, Moroni P. Randomized noninferiority field-trial comparing two first generation cephalosporin products at the dry-off. J Dairy Sci. 2016 99(8):1-13


105. *Vasquez A, Nydam DV, Capel MB, Ceglowski B, Rauch BJ, Thomas MJ, Tikofsky L, Watters RD, Zuidhof S, Zurakowski MJ. Randomized noninferiority trial comparing two commercial intramammary antibiotics for the treatment of nonsevere clinical mastitis in dairy cows. J Dairy Sci. 2016 Oct;99(10):8267-81


106. *Wieland, M, Mann S, Guard CL, Nydam DV. The influence of three different navel dips on umbilical involution, calf health, and growth performance. J Dairy Sci. 2017 Jan; 100 (1):513-524


107. * Vasquez A, Nydam DV, Capel MB, Eicker S Virkler PD. Clinical outcome comparison of immediate blanket treatment versus a delayed pathogen-based treatment protocol for clinical mastitis in a New York dairy herd. J Dairy Sci. 2017 Apr; 100(4):2992-3003


108. *Caixeta LS, Ospina PA, Capel MB, Nydam DV. Association between subclinical hypocalcemia in the first 3 days of lactation and reproductive performance of dairy cows. Therio. 2017 May; 94:1-7

Awards and Honors

  • Editorial Board, Journal of Dairy Science, 2016
  • American Association of Bovine Practitioners: Excellence in Preventive Medicine, 2015
  • Academic Service Award, College of Veterinary Medicine, 2014
  • American Dairy Science Association: Most cited manuscript 2010 – 2013
  • Faculty Fellow, Atkinson Center for a Sustainable Future, 2009-present

Professional/Academic Affiliations

  • American Veterinary Medical Association                                                       
  • American Association of Bovine Practitioners                                                    
  • NMC (National Mastitis Council)                                                                             
  • American Dairy Science Association 
  • Graduate Field of Animal Science
  • Graduate Field of Comparative Biomedical Sciences
  • Graduate Field of Epidemiology
  • Graduate Field of Infectious Disease and Immunology