Daniel Schreiner. M.S. Dec 2001.  Biologic and Physiologic Effects of Tail Docking Dairy Cattle.  Employed by Lely North America as a product manager.

Schreiner, D.A., and P.L. Ruegg.  2003.  Relationship between udder and leg hygiene scores and subclinical mastitis.  J. Dairy Sci. 86:3460-3465.

Schreiner, D.A., and P.L. Ruegg.  2002.  Responses to tail docking in calves and heifers. J. Dairy Sci. 85:3287-3296.

Schreiner, D.A., and P.L. Ruegg.  2002.  Effects of tail docking on milk quality and cow cleanliness. J. Dairy Sci. 85:2503-2511. 

Schreiner, D.A., P.L Ruegg.  Behavioral and adrenal response of cow’s tail docked with a rubber ring with or without local anesthesia.  2001.  J. Dairy Sci. 84(supp 1):16. 

Schreiner, D.A., P.L. Ruegg.  Using process control to monitor bulk tank somatic cell count.  J. Dairy Sci. 2000, 78(supp 1):318. 

Jill Makovec. M.S. May 2002.  Antimicrobial resistance patterns of bacteria cultured from milk samples and characteristics of milk samples submitted for culture in Wisconsin from 1994 to 2001.  Employed by Learfield Communications.

Makovec, J.A., and P.L. Ruegg.  2003.  Characteristics of milk samples submitted for microbiological examination in Wisconsin from 1994 to 2001.  J. Dairy Sci. 86:3466-3472. 

Makovec, J.A., and P.L. Ruegg.  2003.  Antimicrobial resistance of bacteria isolated from dairy cow milk samples submitted for bacterial culture:  8,905 samples (1994-2001). J. Am. Vet. Med. Assoc. 222(11):1582-1589. 

Makovec, J., P.L Ruegg.  Characteristics of milk samples submitted for culture in Wisconsin from 1994-2001.  2002.  J. Dairy Sci. 85 (supp 1), 339.

Makovec, J., P.L. Ruegg.  Antimicrobial resistance patterns of bacteria cultured from milk samples for culture in Wisconsin from 1994-2001.  2002.  J. Dairy Sci. 85(supp 1) 84.

Angela Geiger. M.S. December 2002.  Epidemiology of Campylobacter spp. on organic and conventional dairy farms.  Employed by Zoetis in animal health sales. Geiger, A.M., P.L Ruegg. Reported antimicrobial usage on organic and conventional dairy farms in Midwest and Northeast United State.  2002.  J. Dairy Sci. 85 (supp 1), 342.

Ana Carolina Rodrigues. M.S. June 2004.  Performance of Wisconsin Dairy Farms Enrolled in & Completing Milk Quality Teams.  Employed as Senior ResearchScientist by Elanco, Brazil.

Rodrigues, A.C.O., D.Z. Caraviello and P.L. Ruegg.  2005.  Management and Financial Losses of Wisconsin Dairy Herds Enrolled in Self-Directed Milk Quality Teams.  J. Dairy Sci. 88 2660-2671.

Rodrigues, A.C.O., and P.L. Ruegg.  2005.  Actions and Outcomes of Wisconsin Dairy Farms Completing Milk Quality Teams.  J. Dairy Sci. 88 2672-2680.

Rodrigues, A.C.O., and P.L. Ruegg.  2004.  Opinions of Wisconsin dairy professionals about milk quality.  Food Protection Trends 24:1-6.

Rodrigues, A.C.O., D.Z. Caraviello, and P.L. Ruegg. 2004.   Financial losses and management practices associated with BTSCC.  J. Dairy Sci. 87:375. Rodrigues, A.C.O.,  L.D. Cassoli, P.F. Machado,  and P.L. Ruegg.  2009.  Short Communication: A Cow-Side Test to Estimate Somatic Cell Count.  J. Dairy Sci. 92:990-995.

Fernanda Hoe. M.S. January 2005.  Antimicrobial Resistance and Clinical Outcomes of Mastitis Pathogens.  Employed by Elanco, Brazil in marketing.

Hoe, F.G.H., and P.L Ruegg.  2006.  Opinions and practices of Wisconsin dairy producers about biosecurity and animal well-being.  J. Dairy Sci. 89:2297-2308.

Hoe, F.G.H. and P.L. Ruegg.  2005.  Relationship between antimicrobial susceptibility of clinical mastitis pathogens and treatment outcomes.  J. Am. Vet. Med. Assoc. 227:1461-1468.

Hoe, F., and P.L. Ruegg.  2005.  Biosecurity practices related to cattle purchases.  J. Dairy Sci. 88(supp 1):  300. Hoe, F.G.H., and P.L. Ruegg.  2004.  Relationship between antimicrobial susceptibility of clinical mastitis pathogens and treatment outcomes.  J. Dairy Sci. 87:93.

Martin Pol. M.S. January 2006.  Relationships between estimated antimicrobial usage and antimicrobial resistance of mastitis pathogens isolated from dairy cows on organic and conventional dairy farms.  Owner of LactodiagnosticSur, a private milk quality consulting Argentina.

Pol, M., and P.L. Ruegg.  2007.  Relationship between antimicrobial usage and antimicrobial susceptibility of Gram-positive mastitis pathogens.  J. Dairy Sci. 90:262-273.

Pol, M., and P.L. Ruegg.  2007.  Treatment practices and quantification of antimicrobial usage in conventional and organic dairy farms in Wisconsin.  J. Dairy Sci. 90:249-261.

Pol, M., P.L. Ruegg.  2006.Treatment practices on organic and conventional dairy farms.  J. Dairy Sci. 89(supp 1):  10.

2004. Pol, M., C.M. Hulland, and P.L. Ruegg.  2004.  Antimicrobial susceptibility of coagulase negative Staphylococci isolated from hands of urban children, farm workers and dairy cow teat skin.  J. Dairy Sci. 87(supp 1):183.

Kathryn Hohmann. M.S. January 2008.  Long term performance of Wisconsin Dairy herds after completion of a Milk Quality Team.  Employees by Zoetis as a Milk Quality Specialist. 

Hohmann, K., and P.L. Ruegg.  2012.  The Influence of Extension on Team Success of a Milk Quality Improvement Program. J. of Extension 50:5, 5FEA6. 

Hohmann, K., and P.L. Ruegg.  2007.  Milking parlor employee management on Wisconsin dairy farms. J. Dairy Sci. 90 (supp 1):  333.

Hohmann, K.J., D.A. Rhoda, and P.L. Ruegg.  2006.  Evaluation of clinical mastitis therapy used on commercial dairy farms.  J. Dairy Sci. 89(supp 1):  9.

Dhananjay Meka Apparao. M.S. May 2008.  Relationship between treatment of subclinical and clinical mastitis and antimicrobial resistance.  Research Officer, Massey University, New Zealand.

Apparao, D.J., L. Oliveira, and P.L. Ruegg.  2009.  Relationship between in Vitro Susceptibility Test Results and Treatment Outcomes for Gram-Positive Mastitis Pathogens Following Treatment with Pirlimycin Hydrochloride. J. Am. Vet. Med. Assoc. 234:1437-1446.

Apparao, M.D., P.L., Ruegg, A. Lago, S. Godden, R. Bey, and K. Leslie.  2009.  Relationship between in vitro test results and treatment outcomes for Gram-positive mastitis pathogens following treatment with Cephapirin sodium.  J. Dairy Sci. 92: 2589-2597.

Apparao, M.D., L. Oliveira, C. Hulland, and P.L. Ruegg.  2007.  Effect of intramammary treatment with Pirlimycin hydrochloride on antibiotic sensitivity of Gram-positive subclinical mastitis pathogens. Journal of Animal Science 85:10.

Apparao, M.D., P.L. Ruegg, A. Lago, S. Godden, R. Bey, R. Dingwell, K. Leslie, 2008.  Comparison of In-vitro MIC’s of Gram Positive Pathogens Isolated from cases of Sub-Clinical and Clinical Mastitis. J. Dairy Sci. 91:4. 

Apparao, M.D., P.L Ruegg and H. Khatib. 2008.  Macrolide and lincosamide resistance in Staphylococci and Streptococci isolated from quarters with  persistent subclinical mastitis. J. Dairy Sci. 91:4. 

Apparao, M.D., L. Oliveira, C. Hulland, and P.L. Ruegg.  Effect of intramammary treatment with Pirlimycin hydrochloride on antibiotic sensitivity of Gram-positive subclinical mastitis pathogens. J. Dairy Sci. 90 (supp 1):  10.

Jose Pantoja. M.S. Dec 2008.  Association between somatic cell count and microbiological status across the dry period and the risk of developing clinical and subclinical mastitis in the subsequent lactation. PhD. July 2011.  Evaluation of hygiene and performance of bulk tank milk.   Associate professor, Epidemiology and Milk Quality, University of Sao Paulo, Brazil.

Pantoja, J.C.F., A.C.O. Rodrigues, C. Hulland, D.J. Reinemann, and P.L. Ruegg.  2012.  Investigating Contamination of Bulk Tank Milk with Listeria monocytogenes on a Dairy Farm.  Food Protection Trends 32:512-521.

Pantoja, J. C. F., G.J.M. Rosa, D.J. Reinemann, and P.L. Ruegg.  2012.  Sampling strategies for total bacterial count of unpasteurized bulk milk J. Dairy Sci. 95:2326-2335.

Pantoja, J.C.F., D.J. Reinemann, and P.L. Ruegg. 2011.  Factors associated with coliform counts in unpasteurized bulk milk.  J. Dairy Sci. 94:2680-2691. 

Pantoja, J.C.F., D.J. Reinemann, and P.L. Ruegg.  2009.  Associations between Bacterial and Somatic Cell Counts in Raw Bulk Milk.  J. Dairy Sci. 92:4978-4987.

Pantoja, J.C.F., D.J. Reinemann, and P.L. Ruegg.  2009.  Associations between Bacterial and Somatic Cell Counts in Raw Bulk Milk.  J. Dairy Sci. 92:4978-4987.

Pantoja, J.C.F., C. Hulland, and P.L. Ruegg.  2009.  Dynamics of somatic cell counts and intramammary infections across subsequent lactations.  Prev. Vet. Med. 90:43-54. 

Pantoja, J.C.F., C. Hulland, and P.L. Ruegg.  2009.  Somatic cell count status across the dry period as a risk factor for the development of clinical mastitis in subsequent lactations J. Dairy Sci. 92: 139-148.

Pantoja, J.C.F., A.C.O. Rodrigues, C. Hulland, D.J. Reinemann, and P.L. Ruegg.  2011.  Investigating contamination of bulk tank milk with Listeria monocytogenes on a dairy farm.  J. Dairy Sci. 94:303.

Pantoja, J.C.F., C. Hulland, D.J. Reinemann and P.L. Ruegg.  2008.  Identification of risk factors associated with increased coliform counts in bulk milk.  J. Dairy Sci. 91:25.

Pantoja, J.C.F., C. Hulland, G.J.M. Rosa, D.J. Reinemann and P.L. Ruegg.  2007.  Association between on-farm milk and wash water temperature variation and bulk milk coliform counts, J. Dairy Sci. 90 (supp 1):  10.

Leane Oliveira. M.S. August 2009.  Characterization of Staphylococcus aureus Isolated from Clinical and Subclinical Cases of Mastitis.  PhD. June 2012.  Characteristics of Clinical Mastitis Occurring in Cows on Large Dairy Herds in Wisconsin.  Employed as a Researcher with Elanco, US.

Oliveira, L., and P.L. Ruegg.  2014.  Treatments of clinical mastitis occurring in cows on 51 large dairy herds in Wisconsin. J. Dairy Sci. 97:5426-5436.

Oliveira, L., C. Hulland, and P.L. Ruegg.  2013.  Characterization of clinical mastitis occurring in cows on 50 large dairy herds in Wisconsin.  J. Dairy Sci. 96:7538-7549.

Oliveira, L., H. Langoni, C.M. Hulland and P.L. Ruegg.  2012.  Minimum inhibitory concentration of Staphylococcus aureus recovered from clinical and subclinical cases of bovine mastitis.  J. Dairy Sci. 95:1913-1920.

Oliveira, L., A.C.O. Rodrigues, C. Hulland and P.L. Ruegg.  2011.  Toxin production, toxin genes and genetic diversity of Staphylococcus aureus recovered from cases of bovine subclinical mastitis.  Am. J. Vet Res. 72:1361-1368.

Oliveira, L. and P.L. Ruegg.  2011.  Treatments for clinical mastitis and other diseases in large dairy herds in Wisconsin.  J. Dairy Sci. 94:66.

Oliveira, L., H. Langoni, and P.L. Ruegg.  2009.  Risk factors for multi-drug resistance of Staphylococcus aureus obtained from cases of mastitis.  J. Dairy Sci. 92:42.

Oliveira, L., H. Langoni, M.D. Apparao, and P.L. Ruegg.  2008.  Comparison of minimum inhibitory concentrations of Staphylococcus aureus obtained from clinical and subclinical cases of mastitis. J. Dairy Sci. 91:3. 

Carolina Pinzon-Sanchez. M.S. August 2010.  Decision making for clinical mastitis on dairy farms.  Owner of Forte Dairy Consulting, training and communication solutions for dairy farms. Madison WI.

Pinzon-Sanchez, C., C. Hulland and P.L. Ruegg.  2010.  Post treatment outcomes of clinical mastitis on commercial dairy farms.  J. Dairy Sci. 93:79.

Pinzon-Sanchez, C., V.E. Cabrera and P.L. Ruegg.  2011.  Decision tree analysis of treatment strategies for mild and moderate cases of clinical mastitis. J. Dairy Sci. 94:1873-1892.

Roxann Richert. M.S. April 2012.  Thesis: “The Impact of Management on the Health of Dairy Cattle on Organic and Conventional Farms.”Farming in North Dakota.

Richert, R.M., K.M. Cicconi-Hogan, Y.H. Schukken, M.J. Gamroth, K.E. Stiglbauer, and P.L. Ruegg.  2013.  Perceptions and risk factors for lameness on organic and small conventional farms.  J. Dairy Sci. 96:5018-5026.

Richert, R.M., K.M. Cicconi, M.J. Gamroth, Y.H. Schukken, K.E. Stiglbauer, and P.L. Ruegg.  2013.  Risk factors for clinical mastitis, ketosis, and pneumonia on organic and small conventional farms.  J. Dairy Sci. 96:4269-4285.

Richert, R.M., K.M. Cicconi, M.J. Gamroth, Y.H. Schukken, K.E. Stiglbauer, and P.L. Ruegg.  2013.  Management factors associated with veterinary usage by organic and conventional dairy farms.  J. Am. Vet. Med. Assoc. 242:1732-1743. Richert, R.M., K.M. Cicconi, M.J. Gamroth, Y.H. Schukken, K.E. Stiglbauer, and P.L. Ruegg.  2013.  Management factors associated with veterinary usage by organic and conventional dairy farms.  J. Am. Vet. Med. Assoc. 242:1732-1743.

Meghan Bergman. M.S. August 2013. Thesis: “The Impact of Management on the Health and Wellbeing of Dairy Cattle on Organic and Small Conventional Farms.” Employed as Aftermarket Sales Manager at BouMatic

Bergman, M. A., R.M. Richert, K. M. Cicconi, M. J. Gamroth, Y.H. Schukken, K. E. Stiglbauer, and P. L. Ruegg.  2014.  Comparison of selected animal observations and management practices used to assess welfare of calves and adult dairy cows on organic and small conventional dairy farms. J. Dairy Sci. 97:4269-4280.

Bergman, M., R. Richert, K. Stiglbauer, K. Cicconi-Hogan, M. Gamroth, Y. Schukken, and P. Ruegg.  2013.  Practices associated with dairy cattle wellbeing on organic and similarly sized conventional dairy herds.  J. Dairy Sci. 96:532. 

Maria Jose Fuenzalida Valenzuela. M.S. August 2014.  Effect of mastitis on reproductive performance and fertility of dairy cows (co-advised with Paul Fricke). PhD. Dec 2018.  Treatment strategies for clinical mastitis to minimize antimicrobial usage. Study coordinator at Pathway Preclinical Services

Fuenzalida, M.J. and P.L. Ruegg.  2020.  Molecular epidemiology of non-severe clinical mastitis caused by Klebsiella pneumoniae occurring in cows on 2 Wisconsin dairy farms.  J. Dairy Sci.  103:3779-3792.  https://doi.org/10.3168/jds.2019-17464

Fuenzalida, M.J. and P.L. Ruegg. 2019.   Short Communication: Longitudinal study of quarter-level somatic cell responses after naturally occurring non-severe clinical mastitis diagnosed as culture negative, or caused by Escherichia coli, or Klebsiella pneumoniae and randomly to a no-treatment group or to receive intramammary ceftiofur.  J. Dairy Sci.  102:11476-11482. DOI: https://doi.org/10.3168/jds.2018-16190

Fuenzalida, M.J. and P.L. Ruegg.  2019.  Negatively-controlled, randomized clinical trial to evaluate use of intramammary treatment of non-severe, Gram-negative clinical mastitis. J. Dairy Sci. 102:5438-5457.  https://doi.org/10.3168/jds.2018-16156

Fuenzalida, M.J. and P.L. Ruegg.  2019.  Negatively-controlled, randomized clinical trial to evaluate use of intramammary ceftiofur for treatment of non-severe, culture negative clinical mastitis. J Dairy Sci,  104:3321-3338. https://doi.org/10.3168/jds.2018-15497

Fuenzalida, M.J., P.M. Fricke, and P.L. Ruegg.  2015.  The association between occurrence and severity of subclinical and clinical mastitis on pregnancies per artificial insemination at first service of Holstein cows.  J. Dairy Sci. 98:3791-3805.

Fuenzalida, M. J. and P.L. Ruegg.  2018.  Relationship between in vitro ceftiofur minimum inhibitory concentration and quarter somatic cell count response after the occurrence of clinical mastitis caused by Klebsiella spp.  J Dairy Scie 101:supp 2:224.

Fuenzalida, M.J., and P.L. Ruegg.  2017.  Quarter somatic cell count of culture negative and Gram-negative cases of non-severe clinical mastitis enrolled in negatively controlled randomized clinical trials.  J Dairy Sci.  100:232.

Fuenzalida, M.J., P.D. Carvalho. M.C. Wiltbank, P.L. Ruegg, and P.M. Fricke. 2015.  Etiology of early pregnancy losses in Holstein dairy cows based on serum pregnancy-associated glycoprotein and progesterone concentrations.  Abstract T324.  J. Dairy Sci. 98:suppl 2:426. 

Fuenzalida, M.J., P.D. Carvalho, M.C. Wiltbank, P.M. Fricke, and P.L. Ruegg. 2014.   Associations between Severity and Etiology of Clinical Mastitis and Pregnancy Outcomes to First-Service in Dairy Cows.  J. Dairy Sci. 97:438.

Fuenzalida, M.J., L. Oliveira, J. Gaska, P.M. Fricke, and P.L. Ruegg.  2012.  Treatment Outcomes for Clinical Mastitis Caused by E. coli in a Wisconsin Dairy Herd.  J. Dairy Sci. 95:7.

Cecilia Baumberger. M.S. Aug 2015.  Evaluation of automated teat preparation.  Employed by Biogenesis Bago, Argentina as a research assistant. 

Baumberger, C., J.F. Guarin Montoya, and P.L. Ruegg.  2016.  Effect of 2 different premilking teat sanitation routines on reduction of bacterial counts on teat skin of cows on commercial dairy farms.  J. Dairy Sci.  99:2915-2929. 

Cecilia Baumberger and Pamela L. Ruegg. 2015.  Effect of an Automated Teat Preparation System on Milking Performance.  Abstract M264.  J. Dairy Sci. 98:102.

Aine O’Connell. PhD. Dec 2015.  Factors influencing microbiological quality of milk. Employed by Arrabawn Cheese, Ireland as a field specialist. 

O’Connell, A., P.L. Ruegg, A. Kelly, J. Tobin, D. Gleeson.  2017.  The effect of storage conditions on the composition and functional properties of blended bulk tank milk.  J Dairy Sci. 100:991-1003. 

O’Connell, A., P.L. Ruegg, K. Jordan, B. O’Brien, D. Gleeson.  2016.  The effect of storage temperature and duration on microbial quality of bulk tank milk.  J. Dairy Sci. 99:3367-3374.

O’Connell, A., P.L. Ruegg, D. Gleeson, S. McParland.  2015.  Seasonal trends in milk quality in Ireland between 2007 and 2011.  J. Dairy Sci. 98:3778-3790.

O’Connell, A., P. Ruegg, and D. Gleeson.  2013.  Farm management factors associated with the Bacillus cereus count in bulk tank milk.  Irish Journal of Agricultural and Food Research 52:229-241.

Rob Rowbotham. PhD. Dec 2015.  Impact of bedding type of milk quality. Innovation manager, Grande Cheese.

Rowbotham, R.F., and P.L. Ruegg.  2016.  Bacterial Counts of Teat Skin and of New Sand, Recycled Sand and Recycled Manure Used as Bedding in Freestalls.  J. Dairy Sci. 99:6594-6608. 

Rowbotham, R.F., and P.L. Ruegg.  2016.  Associations of selected bedding types with incidence rates of subclinical and clinical mastitis in primiparous Holstein dairy cows.  J.  Dairy Sci.  99:4707-4717.

Rowbotham, R. F., and P.L. Ruegg.  2015.  Association of bedding types with management practices and indicators of milk quality on larger Wisconsin dairy farms.  J. Dairy Sci. 98:7865-7885. 

Rowbotham, R.F., and P. L. Ruegg. 2015.  Associations between milk quality, type of bedding, and milking management on large Wisconsin dairy farms. Abstract 686.  J. Dairy Sci. 98:suppl 2:  815.

Rowbotham, R.F., T.L. Peters, T.M. Walker, and P.L. Ruegg.  2014.  Quantification of microbial populations in organic and inorganic Dairy cattle bedding materials. J. Dairy Sci. 97:42. 

Jose Guarín Montoya.  PhD.  Feb 2016.  Teat associated risk factors for mastitis.  Assistant Professor, Dairy Management, Universidad de Antioquia, Colombia. 

Guarin, J.F., C. Baumberger, and P.L. Ruegg.  2017.  Anatomical characteristics of teats and pre-milking bacterial counts of teat skin swabs of primiparous cows exposed to different types of bedding. J. Dairy Sci.  100:1436-1444.

Guarin, J.F., M.G. Paixao, and P.L. Ruegg.  2017.  Association of anatomical characteristics of teats with quarter milk somatic cell count.  J. Dairy Sci.  100:643-652.

Guarin, J.F. and P.L. Ruegg.  2016.  Short Communication:  Pre- and post-milking anatomical characteristics of teats and their associations with increased risk of clinical mastitis in dairy cows.  J Dairy Sci. 99:8323-8329.   

Guarin, J.F., P.L. Ruegg, and D.J. Reinemann.  2014.  Impact of machine milking on teat dimensions.  J. Dairy Sci. 97:614.

Stephanie Metzger.  PhD.  April 2018.  Application of microbiome techniques to mastitis control. Employed as a Post-doctoral research, UW Madison Dept. of Microbiology

Metzger, S.A., L.L. Hernandez, J.H. Skarlupka, T.M. Walker, G. Suen and P.L. Ruegg.  2018.  A cohort study of the healthy and inflamed bovine milk microbiota from dry off through 150 days in milk. Front. Vet. Sci.  5:274-258.  https://doi.org/10.3389/fvets.2018.00247 

Metzger, S.A., L.L. Hernandez, J.H. Skarlupka, G. Suen, T.M. Walker, and P.L. Ruegg.  2018.  Influence of sampling technique and bedding type on the milk microbiota: results of a pilot study.  J Dairy Science, 101:6346-6356. https://10.3168/jds.2017-14212 

Metzger, S.A., T. Walker, J. Skarlupka, L.L. Hernandez, G. Suen and P.L. Ruegg. 2017.   The Milk Microbiome of Healthy and Inflamed Mammary Quarters Through the Dry Period and First 150 Days of Lactation. J Dairy Sci.  100:175.

Metzger, S.A., L.L. Hernandez, and P.L. Ruegg.  2015.  Distribution of quarter-level SCC across the dry and early post-partum period.  Abstract T20019.  J. Dairy Sci. 98:suppl 2:386.