Contact Information

Phone:      +1 765-496-7946

Email:       Jay.Johnson2@usda.gov

Areas of Expertise:

Stress physiology

Nutritional physiology

Applied ethology

Education:

BS: Animal Sciences, 2009, University of Missouri 

MS: Animal Sciences, 2011, University of Missouri 

PhD: Nutritional Sciences, 2014, Iowa State University

Postdoc: Applied Ethology, 2014-2015, Purdue University

Dr. Jay S. Johnson is the Supervisory Research Animal Scientist (Research Leader) of the USDA-ARS Livestock Behavior Research Unit in West Lafayette, IN USA specializing in stress and nutritional physiology. He received his Bachelor’s and Master’s degrees from the University of Missouri, his PhD from Iowa State University, and completed his postdoctoral training at Purdue University. The overall goal of Dr. Johnson’s research program is to identify and mitigate the effects of production-relevant stressors on livestock. Dr. Johnson’s research program uses an integrative physiology approach encompassing aspects of stress physiology, nutritional physiology, and applied ethology to develop and/or improve upon livestock husbandry practices that enhance animal health and welfare while maintaining or increasing economic return for producers. Specific areas of research include: 1) improving heat stress resilience in swine through improvements to management practices, nutrition and genetic selection to reduce the negative effects of pre- and postnatal heat stress in pigs, and 2) mitigating the effects of early life stressors on gastrointestinal function in pigs and dairy calves to improve health, performance, and welfare metrics.

• Projects

  Improving Piglet Survivability and Sow Welfare through Microenvironment Management Cooperative Agreement (A)   Accession Number:440589

  Integrating Functional Genomics, Behavior, and Health Measures to Mitigate the Cumulative Effects of in Utero Heat Stress on Swine Welfare Cooperative Agreement (A)   Accession Number:440869

  Optimizing Welfare for Food Producing Animals In-House Appropriated (D)   Accession Number:442656

  Integrating Functional Genomics, Behavior, and Health Measures to Mitigate the Cumulative Effects of in Utero Heat Stress on Swine Welfare Interagency Reimbursable Agreement (I)   Accession Number:439750

  Enhancing the Thermal Environment of Sows and Piglets to Simultaneously Improve Sow Welfare and Improve Lifetime Performance and Survivability of... Interagency Reimbursable Agreement (I)   Accession Number:439634

  Utilize the Purdue Animal Care and Use Committee (PACUC) Non-Funded Cooperative Agreement (N)   Accession Number:440099

  Institutional Biological Safety Committee (IBC) Agreement - Purdue University Non-Funded Cooperative Agreement (N)   Accession Number:442029

  Elucidating the Biology of Sow Tolerance to Heat Stress at The Intersection of the Genome, Microbiome and Metabolome Reimbursable Cooperative Agreement (R)   Accession Number:439144

  Improving the Environment of Piglets and Sows to Enhance Performance and Welfare Non-Assistance Cooperative Agreement (S)   Accession Number:442018

  Reducing the Negative Impact of In Utero Heat Stress on Swine Immune Function Through Functional Genomics Non-Assistance Cooperative Agreement (S)   Accession Number:443918

  Identifying Phenotypic and Genotypic Indicators of Dairy Cattle Resilience in Automated Farming Systems Non-Assistance Cooperative Agreement (S)   Accession Number:439690

  Swine Thermal Stress Mobile Application HotHog Non-Assistance Cooperative Agreement (S)   Accession Number:439726

  Determining the Thermal Preference of Weanling Pigs Non-Assistance Cooperative Agreement (S)   Accession Number:436726

  Supplementing Dairy Calves with L-glutamine to Reduce Antibiotic Use Non-Assistance Cooperative Agreement (S)   Accession Number:437946

  Evaluating the Interactions Between Swine Behavior and Heat Stress Response Non-Assistance Cooperative Agreement (S)   Accession Number:438096

  Evaluation of Effects of a Animal Nutrition Supplement on Short and Long-term Sow and Litter Health, Performance, and Welfare Under Heat Stress Trust Fund Cooperative Agreement (T)   Accession Number:441508

• Publications

  • (Clicking on the reprint icon will take you to the publication reprint.)
  • Genetic parameters for automatically-measured vaginal temperature, respiration efficiency, and other thermotolerance indicators measured in lactating sows under heat stress conditions-(Peer Reviewed Journal)
    
    
  • Evaluating the temperature preferences of sexually mature Duroc, Landrace, and Yorkshire boars -(Peer Reviewed Journal)
    Raber, V.L., Pritchett, R.K., Robbins, L.A., Stewart, K.R., Gaskill, B.N., Green-Miller, A.R., Johnson, J.S. 2023. Evaluating the temperature preferences of sexually mature Duroc, Landrace, and Yorkshire boars. Translational Animal Science. 7(1). https://doi.org/10.1093/tas/txad060.
    
  • L-glutamine supplementation reduces gastrointestinal permeability and biomarkers of physiological stress in preweaning Holstein heifer calves -(Peer Reviewed Journal)
    Ceja, G., Boerman, J.P., Neves, R.C., Jorgensen, M.W., Johnson, J.S. 2023. L-glutamine supplementation reduces gastrointestinal permeability and biomarkers of physiological stress in preweaning Holstein heifer calves. Journal of Dairy Science. https://doi.org/10.3168/jds.2023-23334.
    
  • Evaluating phenotypes associated with heat tolerance and identifying moderate and severe heat stress thresholds in lactating sows housed in mechanically or naturally ventilated barns during the summer under commercial ..... -(Peer Reviewed Journal)
    Johnson, J.S., Wen, H., Freitas, P.F., Maskal, J.M., Hartman, S.O., Byrd, M.K., Graham, J.R., Ceja, G., Tiezzi, F., Maltecca, C., Huang, Y., DeDecker, A., Schinckel, A.P., Brito, L.F. 2023. Evaluating phenotypes associated with heat tolerance and identifying moderate and severe heat stress thresholds in lactating sows housed in mechanically or naturally ventilated barns during the summer under commercial ...... Journal of Animal Science. 101. https://doi.org/10.1093/jas/skad129.
    
  • A behavior and physiology-based decision support tool to predict thermal comfort and stress in non-pregnant, mid-gestation, and late-gestation sows -(Peer Reviewed Journal)
    McConn, B., Schinckel, A.P., Robbins, L., Gaskill, B.N., Green-Miller, A.R., Lay, D.C., Johnson, J.S. 2022. A behavior and physiology-based decision support tool to predict thermal comfort and stress in non-pregnant, mid-gestation, and late-gestation sows. Journal of Animal Science and Biotechnology. 13. Article 135. https://doi.org/10.1186/s40104-022-00789-x.
    
  • Smart Capsule for Targeted Proximal Colon Microbiome Sampling-(Peer Reviewed Journal)
    
    
  • Technical Note: A procedure to place urinary catheters in 1- and 6-week-old preweaned Holstein heifer calves for the in vivo evaluation of intestinal permeability -(Peer Reviewed Journal)
    Ceja, G., Boerman, J.P., Neves, R.C., Johnson, N.S., Schoonmaker, J.P., Jorgensen, M.W., Johnson, J.S. 2022. Technical Note: A procedure to place urinary catheters in 1- and 6-week-old preweaned Holstein heifer calves for the in vivo evaluation of intestinal permeability. Journal of Animal Science. 100(8). Article skac213. https://doi.org/10.1093/jas/skac213.
    
  • In utero heat-stress has minimal impacts on processed pork products: A comparative study -(Peer Reviewed Journal)
    Xue, S., Park, J., Tuell, J.R., Johnson, J.S., Dinh, T., Kim, Y. 2022. In utero heat-stress has minimal impacts on processed pork products: A comparative study. Foods. https://doi.org/10.3390/foods11091222.
    
  • INITIAL EVALUATION OF SOW COOLING PAD COOLANT PROTOCOLS ON PERFORMANCE AND PHYSIOLOGICAL CONDITIONS MEASURED BY PRECISION ANIMAL DATA SYSTEM -(Peer Reviewed Journal)
    Cabezon, F., Johnson, J.S., Schinckel, A.P., Stwalley, R. 2022. INITIAL EVALUATION OF SOW COOLING PAD COOLANT PROTOCOLS ON PERFORMANCE AND PHYSIOLOGICAL CONDITIONS MEASURED BY PRECISION ANIMAL DATA SYSTEM. Applied Engineering in Agriculture. https://doi.org/10.13031/aea.14699.
    
  • Characterizing the effect of incrementally increasing dry bulb temperature on linear and nonlinear measures of heart rate variability in nonpregnant, mid-gestation, and late-gestation sows -(Peer Reviewed Journal)
    Byrd, C.J., Mcconn, B.R., Gaskill, B.N., Schinckel, A.P., Green-Miller, A.R., Lay Jr, D.C., Johnson, J.S. 2022. Characterizing the effect of incrementally increasing dry bulb temperature on linear and nonlinear measures of heart rate variability in nonpregnant, mid-gestation, and late-gestation sows. Journal of Animal Science. 100(1). Article skac004. https://doi.org/10.1093/jas/skac004.
    
  • Electronically controlled cooling pads can improve litter growth performance and indirect measures of milk production in heat-stressed lactating sows -(Peer Reviewed Journal)
    Johnson, J.S., Jansen, T.L., Galvin, M., Field, T.C., Graham, J.R., Stwalley, R.M., Schinckel, A.P. 2022. Electronically controlled cooling pads can improve litter growth performance and indirect measures of milk production in heat-stressed lactating sows. Journal of Animal Science. 100(2). Article skab371. https://doi.org/10.1093/jas/skab371.
    
  • Characterizing the postnatal hypothalamic-pituitary-adrenal axis response of in utero heat stressed pigs at 10 and 15 weeks of age -(Peer Reviewed Journal)
    Maskal, J.M., Brito, L.F., Duttlinger, A.W., Kpodo, K.R., Mcconn, B.R., Byrd, C.J., Richert, B.T., Marchant, J.N., Lay Jr, D.C., Perry, S.D., Lucy, M.C., Safranski, T.J., Johnson, J.S. 2022. Characterizing the postnatal hypothalamic-pituitary-adrenal axis response of in utero heat stressed pigs at 10 and 15 weeks of age. Scientific Reports. 11. Article 22527. https://doi.org/10.1038/s41598-021-01889-w.
    
  • Small intestinal sampling capsule for inflammatory bowel disease type detection and management -(Peer Reviewed Journal)
    Nejati, S., Wang, J., Heredia, U., Sedaghat, S., Woodhouse, I., Johnson, J.S., Verma, M., Rahimi, R. 2021. Small intestinal sampling capsule for inflammatory bowel disease type detection and management. Lab on a Chip. 22(1):57-70. https://doi.org/10.1039/D1LC00451D.
    
  • Definition of environmental variables and critical periods to evaluate heat tolerance in large white pigs based on single-step genomic reaction norms -(Peer Reviewed Journal)
    Freitas, P., Johnson, J.S., Chen, S., Oliveria, H., Tiezzi, F., Lazaro, S., Huang, Y., Gu, Y., Schinckel, A., Brito, L. 2021. Definition of environmental variables and critical periods to evaluate heat tolerance in large white pigs based on single-step genomic reaction norms. Frontiers in Genetics. 12. Article 717409. https://doi.org/10.3389/fgene.2021.717409.
    
  • Evaluation of sow thermal preference across three stages of reproduction -(Peer Reviewed Journal)
    Robbins, L.R., Green-Miller, A.R., Lay Jr, D.C., Schinckel, A.P., Johnson, J.S., Gaskill, B.N. 2021. Evaluation of sow thermal preference across three stages of reproduction. Journal of Animal Science. https://doi.org/10.1093/jas/skab202.
    
  • Thermoregulatory and physiological responses of nonpregnant, mid-gestation, and late-gestation sows exposed to incrementally increasing dry bulb temperature -(Peer Reviewed Journal)
    Mcconn, B.R., Gaskill, B.N., Schinckel, A.P., Green-Miller, A.R., Lay Jr, D.C., Johnson, J.S. 2021. Thermoregulatory and physiological responses of nonpregnant, mid-gestation, and late-gestation sows exposed to incrementally increasing dry bulb temperature. Journal of Animal Science. 99(7). https://doi.org/10.1093/jas/skab181.
    
  • One is the Coldest Number: Determining How Group Size and Body Weight Affects Thermal Preference in Weaned Pigs (3 to 15 kg) -(Peer Reviewed Journal)
    Robbins, L., Green-Miller, A.R., Johnson, J.S., Gaskill, B.N. 2021. One is the Coldest Number: Determining How Group Size and Body Weight Affects Thermal Preference in Weaned Pigs (3 to 15 kg). Animals. 11(5). https://doi.org/10.3390/ani11051447.
    
  • Replacing dietary antibiotics with 0.20% L-glutamine in swine nursery diets: impact on intestinal physiology and the microbiome following weaning and transport -(Peer Reviewed Journal)
    Duttlinger, A.W., Centeno Martinez, R.E., Mcconn, B.R., Kpodo, K.R., Lay Jr, D.C., Richert, B.T., Johnson, T.A., Johnson, J.S. 2021. Replacing dietary antibiotics with 0.20% L-glutamine in swine nursery diets: impact on intestinal physiology and the microbiome following weaning and transport. Journal of Animal Science. 99(6). https://doi.org/10.1093/jas/skab091.
    
  • Impacts of in utero heat stress on carcass and meat quality traits of market weight gilts -(Peer Reviewed Journal)
    Tuell, J.R., Nondorf, M.J., Maskal, J.M., Johnson, J.S., Kim, Y.H. 2021. Impacts of in utero heat stress on carcass and meat quality traits of market weight gilts. Animals. 11(3). https://doi.org/10.3390/ani11030717.
    
  • Elucidating the involvement of apoptosis in postmortem proteolysis in porcine muscles from two production cycles using metabolomics approach -(Peer Reviewed Journal)
    Ma, D., Suh, D., Zhang, J., Chao, Y., Duttlinger, A.W., Johnson, J.S., Lee, C., Kim, Y. 2021. Elucidating the involvement of apoptosis in postmortem proteolysis in porcine muscles from two production cycles using metabolomics approach. Scientific Reports. 11(1). https://doi.org/10.1038/s41598-021-82929-3.
    
  • Effects of feed removal during acute heat stress on the inflammatory response and short-term growth performance in grow-finish pigs -(Peer Reviewed Journal)
    Kpodo, K.R., Duttlinger, A.W., Maskal, J.M., Mcconn, B.R., Johnson, J.S. 2021. Effects of feed removal during acute heat stress on the cytokine. Animals. 11(1). https://doi.org/10.3390/ani11010205.
    
  • Exposure to chronic light-dark phase shifts during the prepartum dry period attenuates circadian rhythms, decreases blood glucose and increases milk yield in the subsequent lactation -(Peer Reviewed Journal)
    Suarez-Trujillo, A., Sun, H., Huff, K., Cummings, S., Franco, J., Steckler, T., Boerman, J., Wernet, G., Townsend, J., Grott, M., Johnson, J.S., Plaut, K., Casey, T. 2020. Exposure to chronic light-dark phase shifts during the prepartum dry period attenuates circadian rhythms, decreases blood glucose and increases milk yield in the subsequent lactation. Journal of Dairy Science. https://doi.org/10.3168/jds.2019-16980.
    
  • Impact of L-Glutamine as Replacement of Dietary Antibiotics during Post Weaning and Transport Recovery on Carcass and Meat Quality Attributes in Pigs -(Peer Reviewed Journal)
    Ma, D., Guedes, J.M., Zuelly, S.M., Duttlinger, A.W., Johnson, J.S., Lay Jr, D.C., Kim, Y.H. 2020. Impact of L-Glutamine as Replacement of Dietary Antibiotics during Post Weaning and Transport Recovery on Carcass and Meat Quality Attributes in Pigs. Livestock Science. 244. https://doi.org/10.1016/j.livsci.2020.104350.
    
  • In utero heat stress alters the postnatal innate immune response of pigs -(Peer Reviewed Journal)
    Johnson, J.S., Maskal, J.M., Duttlinger, A.W., Kpodo, K.R., Mcconn, B.R., Byrd, C.J., Richert, B.T., Marchant Forde, J.N., Lay Jr, D.C., Perry, S.D., Lucy, M.C., Safranski, T.J. 2020. In utero heat stress alters the postnatal innate immune response of pigs. Journal of Animal Science. 98(12). https://doi.org/10.1093/jas/skaa356.
    
  • The effects of zinc amino acid complex on biomarkers of gut integrity, inflammation, and metabolism in heat-stressed ruminants -(Peer Reviewed Journal)
    Opgenorth, J., Abuajamieh, M., Horst, E., Mohannad, S., Johnson, J.S., Mayorga, E., Sanz Fernandez, V., Al-Qaisi, M., Defrain, J., Kleinschmit, D., Gorden, P., Baumgard, L. 2020. The effects of zinc amino acid complex on biomarkers of gut integrity, inflammation, and metabolism in heat-stressed ruminants. Journal of Dairy Science. https://doi.org/10.3168/jds.2020-18909.
    
  • Early life thermal stress: Impacts on future temperature preference in weaned pigs (3 to 15 kg) -(Peer Reviewed Journal)
    Robbins, L., Green-Miller, A.R., Johnson, J.S., Gaskill, B.N. 2020. Early life thermal stress: Impacts on future temperature preference in weaned pigs (3 to 15 kg). Journal of Animal Science. 98(12). https://doi.org/10.1093/jas/skaa327.
    
  • Effects increasing dietary L-glutaine to replace antibiotics on pig health and performance following weaning and transport. -(Peer Reviewed Journal)
    Duttlinger, A.W., Kpodo, K.R., Schinckel, A.P., Richert, B.T., Johnson, J.S. 2020. Effects increasing dietary L-glutaine to replace antibiotics on pig health and performance following weaning and transport.. Translational Animal Science. https://doi.org/10.1093/tas/txaa157.
    
  • Replacing dietary antibiotics with 0.20% L-glutamine and synbiotics following weaning and transport in pigs -(Peer Reviewed Journal)
    Mcconn, B.R., Duttlinger, A.W., Kpodo, K.R., Eicher, S.D., Richert, B.T., Johnson, J.S. 2020. Replacing dietary antibiotics with 0.20% L-glutamine and synbiotics following weaning and transport in pigs. Journal of Animal Science. https://doi.org/10.1093/jas/skaa272.
    
  • Evaluation and mitigation of the effects of in utero heat stress on piglet growth performance, post-absorptive metabolism, and stress response following weaning and transport -(Peer Reviewed Journal)
    Maskal, J.M., Duttlinger, A.W., Kpodo, K.R., Mcconn, B.R., Byrd, C.J., Richert, B.T., Marchant Forde, J.N., Lay Jr, D.C., Perry, S.D., Lucy, M.C., Safranski, T.J., Johnson, J.S. 2020. Evaluation and mitigation of the effects of in utero heat stress on piglet growth performance, post-absorptive metabolism, and stress response following weaning and transport. Journal of Animal Science. https://doi.org/10.1093/jas/skaa272.
    
  • Large-scale phenotyping of livestock welfare in commercial production systems: a new frontier in animal breeding -(Review Article)
    Brito, L.F., Oliveira, H.R., Mcconn, B., Marchant Forde, J.N., Schinckel, A.P., Johnson, J.S. 2020. Large-scale phenotyping of livestock welfare in commercial production systems: a new frontier in animal breeding. Frontiers in Genetics. https://doi.org/10.3389/fgene.2020.00793.
    
  • Effect of dietary near ideal amino acid profile on heat production in lactating sows exposed to thermal neutral and heat stress conditions -(Peer Reviewed Journal)
    Zhang, S., Johnson, J.S., Trottier, N.L. 2020. Effect of dietary near ideal amino acid profile on heat production in lactating sows exposed to thermal neutral and heat stress conditions. Journal of Animal Science and Biotechnology. https://doi.org/10.1186/s40104-020-00483-w.
    
  • In utero heat stress alters postnatal phenotypes in swine -(Review Article)
    Johnson, J.S., Stewart, K.R., Safranski, T.J., Ross, J.W., Baumgard, L.H. 2020. In utero heat stress alters postnatal phenotypes in swine. Theriogenology. https://doi.org/10.1016/j.theriogenology.2020.05.013.
    
  • Effects of three distinct two-week long diet strategies after transport on weaned pigs’ short and long-term welfare markers, behaviors and microbiota. -(Peer Reviewed Journal)
    Parois, S.P., Duttlinger, A.W., Richert, B.T., Lindemann, S.R., Johnson, J.S., Marchant Forde, J.N. 2020. Effects of three distinct two-week long diet strategies after transport on weaned pigs’ short and long-term welfare markers, behaviors and microbiota.. Journal of Animal Science. https://doi.org/10.3389/fvets.2020.00140.
    
  • Effects of feed removal on thermoregulation and intestinal morphology in pigs recovering from acute hyperthermia -(Peer Reviewed Journal)
    Kpodo, K.R., Duttlinger, A.W., Maskal, J.M., Johnson, J.S. 2020. Effects of feed removal on thermoregulation and intestinal morphology in pigs recovering from acute hyperthermia. Journal of Animal Science. https://doi.org/10.1093/jas/skaa041.
    
  • Reduced protein diet with near ideal amino acid profile improves energy efficiency and mitigates heat production associated with milk for lactating sows -(Peer Reviewed Journal)
    Zhang, S., Johnson, J.S., Qiao, M., Trottier, N.L. 2020. Reduced protein diet with near ideal amino acid profile improves energy efficiency and mitigates heat production associated with milk for lactating sows. Journal of Animal Science and Biotechnology. https://doi.org/10.1186/s40104-019-0414-x.
    
  • Time course determination of the effects of rapid and gradual cooling after acute hyperthermia on body temperature and intestinal integrity in pigs -(Peer Reviewed Journal)
    Kpodo, K.R., Duttlinger, A.W., Radcliffe, J.S., Johnson, J.S. 2019. Time course determination of the effects of rapid and gradual cooling after acute hyperthermia on body temperature and intestinal integrity in pigs. Journal of Thermal Biology. https://doi.org/10.1016/j.jtherbio.2019.102481.
    
  • Nonlinear analysis of heart rate variability for evaluating the growing pig stress response to an acute heat episode -(Peer Reviewed Journal)
    Byrd, C.J., Johnson, J.S., Radcliffe, J.S., Craig, B.A., Eicher, S.D., Lay Jr, D.C. 2019. Nonlinear analysis of heart rate variability for evaluating the growing pig stress response to an acute heat episode. Journal of Animal Science. https://doi.org/10.1017/S1751731119001630.
    
  • Evaluating the effects of in utero heat stress on piglet physiology and behavior following weaning and transport -(Peer Reviewed Journal)
    Byrd, C., Chapel, N., Lugar, D., Safranski, T., Lucy, M., Johnson, J.S. 2019. Evaluating the effects of in utero heat stress on piglet physiology and behavior following weaning and transport. Animals. 9(4):191. https://doi.org/10.3390/ani9040191.
    
  • Evaluation of sow thermal preference-(Abstract Only)
    
    
  • Effects of pen location on thermoregulation and growth performance in grow-finish pigs during late summer -(Peer Reviewed Journal)
    Kpodo, K.R., Duttlinger, A., Johnson, J.S. 2019. Effects of pen location on thermoregulation and growth performance in grow-finish pigs during late summer. Translational Animal Science. https://doi.org/10.1093/tas/txz033.
    
  • Technical note: Development of an indirect calorimetry system to determine heat production in individual lactating sows -(Peer Reviewed Journal)
    Johnson, J.S., Zhang, S., Morello, G.M., Maskal, J.M., Trottier, N.L. 2019. Technical note: Development of an indirect calorimetry system to determine heat production in individual lactating sows. Journal of Animal Science. 97(4):1609-1618. https://doi.org/10.1093/jas/skz049.
    
  • Postnatal consequences of in utero heat stress in pigs -(Peer Reviewed Journal)
    Johnson, J.S., Baumgard, L.H. 2019. Postnatal consequences of in utero heat stress in pigs. Journal of Animal Science. 97(2):962-971. https://doi.org/10.1093/jas/sky472.
    
  • Effect of floor cooling on behavior and heart rate of late lactation sows under acute heat stress -(Peer Reviewed Journal)
    Parois, S.P., Cabezón, F., Schinckel, A.P., Johnson, J.S., Stwalley, R.M., Marchant Forde, J.N. 2018. Effect of floor cooling on behavior and heart rate of late lactation sows under acute heat stress. Frontiers in Veterinary Science. 5(223):1-8. DOI: 10.3389/fvets.2018.00223.
    
  • Heat stress: Impact on livestock well-being and productivity and mitigation strategies to alleviate the negative effects -(Review Article)
    Johnson, J.S. 2018. Heat stress: Impact on livestock well-being and productivity and mitigation strategies to alleviate the negative effects. Animal Production Science. 58(8):1404-1413. https://doi.org/10.1071/AN17725.
    
  • Early life thermal stress: Impact on future thermotolerance, stress response, behavior, and intestinal morphology in piglets exposed to a heat stress challenge during simulated transport -(Peer Reviewed Journal)
    Johnson, J.S., Aardsma, M.A., Duttlinger, A., Kpodo, K. 2018. Early life thermal stress: Impact on future thermotolerance, stress response, behavior, and intestinal morphology in piglets exposed to a heat stress challenge during simulated transport. Journal of Animal Science. 96(5):1640-1653. https://doi.org/10.1093/jas/sky107.
    
  • Effects of heat stress and insulin sensitizers on pig adipose tissue-(Peer Reviewed Journal)
    Seibert, J., Abuajamieh, M., Sanz Fernandez, M., Johnson, J.S., Kvidera, S., Horst, E., Mayorga, E., Lei, S., Patience, J., Ross, J., Rhoads, R., Johnson, R., Lonergan, S., Baumgard, L. 2018. Effects of heat stress and insulin sensitizers on pig adipose tissue. Journal of Animal Science. 96(2):510-520.
    
  • Effect of floor cooling on late lactation sows under acute heat stress-(Peer Reviewed Journal)
    Cabezón, F.A., Schinckel, A.P., Marchant Forde, J.N., Johnson, J.S., Stwalley, R.M. 2017. Effect of floor cooling on late lactation sows under acute heat stress. Livestock Science. 206: 113-120.
    
  • Initial evaluation of floor cooling on lactating sows under severe acute heat stress-(Peer Reviewed Journal)
    Cabezon, F., Schinckel, A., Smith, A.J., Marchant Forde, J.N., Johnson, J.S., Stwalley, R. 2017. Initial evaluation of floor cooling on lactating sows under severe acute heat stress. Professional Animal Scientist. 33(2):254-260. http://doi.org/10.15232/pas.2016-01584.
    
  • Evaluation of floor cooling on lactating sows under mild and moderate heat stress-(Peer Reviewed Journal)
    Maskal, J., Cabezón, F.A., Schinckel, A.P., Marchant Forde, J.N., Johnson, J.S., Stwalley, R. 2018. Evaluation of floor cooling on lactating sows under mild and moderate heat stress. Professional Animal Scientist. 34(1):84-94. doi:org/10.15232/pas.2017-01661.
    
  • Determining the effects of early gestation in utero heat stress on postnatal fasting heat production and circulating biomarkers associated with metabolism in growing pigs-(Peer Reviewed Journal)
    Chapel, N.M., Byrd, C.J., Lugar, D.W., Morello, G.M., Baumgard, L.H., Ross, J.W., Safranski, T.J., Lucy, M.C., Johnson, J.S. 2017. Determining the effects of early gestation in utero heat stress on postnatal fasting heat production and circulating biomarkers associated with metabolism in growing pigs. Journal of Animal Science. doi: 10.2527/jas2017.1730.
    
  • Effects of floor cooling on late lactation sows under severe acute heat stress-(Abstract Only)
    
    
  • Initial evaluation of floor cooling on lactating sows under severe acute heat stress-(Abstract Only)
    
    
  • Characterizing body temperature and activity changes at the onset of estrus in replacement gilts-(Peer Reviewed Journal)
    Johnson, J.S., Shade, K. 2017. Characterizing body temperature and activity changes at the onset of estrus in replacement gilts. Livestock Science. 199:22-24. doi.org/10.1016/j.livsci.2017.03.004.
    
  • The effects of nesting material on energy homeostasis in BALB/cAnNCrl, C57BL/6NCrl, and Crl:CD1(ICR) laboratory mice housed at 20°C-(Peer Reviewed Journal)
    Johnson, J.S., Taylor, D., Green, A.R., Gaskill, B.N. 2017. The effects of nesting material on energy homeostasis in BALB/cAnNCrl, C57BL/6NCrl, and Crl:CD1(ICR) laboratory mice housed at 20°C. Journal of the American Association for Laboratory Animal Science. 56(3):254-259.
    
  • Intentionally induced intestinal barrier dysfunction causes inflammation, affects metabolism, and reduces productivity in lactating Holstein cows-(Peer Reviewed Journal)
    Kvidera, S.K., Dickson, M.J., Abuajamieh, M., Snider, D.B., Sanz Fernandez, M.V., Johnson, J.S., Keating, A.F., Gordon, P.J., Green, H.B., Schoenberg, K.M., Baumgard, L.H. 2017. Intentionally induced intestinal barrier dysfunction causes inflammation, affects metabolism, and reduces productivity in lactating Holstein cows. Journal of Dairy Science. 100(5):4113-4127. doi: 10.3168/jds.2016-12349.
    
  • Evaluating the behavior, growth performance, immune parameters, and intestinal morphology of weaned piglets after simulated transport and heat stress when antibiotics are eliminated from the diet or replaced with L-glutamine-(Peer Reviewed Journal)
    Johnson, J.S., Lay Jr., D.C. 2017. Evaluating the behavior, growth performance, immune parameters, and intestinal morphology of weaned piglets after simulated transport and heat stress when antibiotics are eliminated from the diet or replaced with L-glutamine. Journal of Animal Science. 95:91-102. doi:10.2527/jas.2016.1070.
    
  • Effects of rapid temperature fluctuations prior to breeding on reproductive efficiency in replacement gilts-(Peer Reviewed Journal)
    Johnson, J.S., Martin, K.L., Pohler, K.G., Stewart, K.R. 2017. Effects of rapid temperature fluctuations prior to breeding on reproductive efficiency in replacement gilts. Journal of Thermal Biology. 61:29-37. doi: 10.1016/j.jtherbio.2016.08.003.
    

• ARS News Articles

  	USDA's Agricultural Research Service Honors Scientists of the Year
  	Amino Acid Helps Shore Up Defenses of Swine
  	Producers Can Now go "Whole Hog" on New Heat Stress App for Pigs
  	Piglets Pay the Price of Mom’s Heat Stress
  	Antibiotic Alternative Scores Well in Second Round of Swine Trials
  	Alternative Antibiotic Gives Piglets a Boost