| Metagenomic analysis of antibiotic resistance genes in dairy cow feces following therapeutic administration of third generation cephalosporin L Chambers, Y Yang, H Littier, P Ray, T Zhang, A Pruden, M Strickland, ... PloS one 10 (8), e0133764, 2015 | 117 | 2015 |
| Excretion of antibiotic resistance genes by dairy calves fed milk replacers with varying doses of antibiotics CH Thames, A Pruden, RE James, PP Ray, KF Knowlton Frontiers in microbiology 3, 139, 2012 | 85 | 2012 |
| Fate and effect of antibiotics in beef and dairy manure during static and turned composting P Ray, C Chen, KF Knowlton, A Pruden, K Xia Journal of Environmental Quality 46 (1), 45-54, 2017 | 74 | 2017 |
| Exposure to dairy manure leads to greater antibiotic resistance and increased mass-specific respiration in soil microbial communities C Wepking, B Avera, B Badgley, JE Barrett, J Franklin, KF Knowlton, ... Proceedings of the Royal Society B: Biological Sciences 284 (1851), 20162233, 2017 | 68 | 2017 |
| Effect of composting and soil type on dissipation of veterinary antibiotics in land-applied manures C Chen, P Ray, KF Knowlton, A Pruden, K Xia Chemosphere 196, 270-279, 2018 | 58 | 2018 |
| Combined effects of composting and antibiotic administration on cattle manure–borne antibiotic resistance genes I Keenum, RK Williams, P Ray, ED Garner, KF Knowlton, A Pruden Microbiome 9, 1-16, 2021 | 46 | 2021 |
| The effects of forage particle length and exogenous phytase inclusion on phosphorus digestion and absorption in lactating cows JP Jarrett, JW Wilson, PP Ray, KF Knowlton Journal of Dairy Science 97 (1), 411-418, 2014 | 42 | 2014 |
| Prolonged exposure to manure from livestock‐administered antibiotics decreases ecosystem carbon‐use efficiency and alters nitrogen cycling C Wepking, B Badgley, JE Barrett, KF Knowlton, JM Lucas, KJ Minick, ... Ecology Letters 22 (12), 2067-2076, 2019 | 38 | 2019 |
| Development and Validation of a UPLC-MS/MS Method to Monitor Cephapirin Excretion in Dairy Cows following Intramammary Infusion P Ray, KF Knowlton, C Shang, K Xia Plos One 9 (11), e112343, 2014 | 36 | 2014 |
| Exploiting open source 3D printer architecture for laboratory robotics to automate high-throughput time-lapse imaging for analytical microbiology SH Needs, TT Diep, SP Bull, A Lindley-Decaire, P Ray, AD Edwards PloS one 14 (11), e0224878, 2019 | 33 | 2019 |
| Effect of dietary phytate on phosphorus digestibility in dairy cows PP Ray, J Jarrett, KF Knowlton Journal of dairy science 96 (2), 1156-1163, 2013 | 27 | 2013 |
| Fate of pirlimycin and antibiotic resistance genes in dairy manure slurries in response to temperature and pH adjustment MM Li, P Ray, KF Knowlton, A Pruden, K Xia, C Teets, P Du Science of the total environment 710, 136310, 2020 | 22 | 2020 |
| Manure injection affects the fate of pirlimycin in surface runoff and soil SB Kulesza, RO Maguire, K Xia, J Cushman, K Knowlton, P Ray Journal of environmental quality 45 (2), 511-518, 2016 | 21 | 2016 |
| Quantifying phytate in dairy digesta and feces: Alkaline extraction and high-performance ion chromatography PP Ray, C Shang, RO Maguire, KF Knowlton Journal of dairy science 95 (6), 3248-3258, 2012 | 21 | 2012 |
| Effect of dietary seaweed supplementation in cows on milk macrominerals, trace elements and heavy metal concentrations EE Newton, ÁH Pétursdóttir, G Ríkharðsson, C Beaumal, N Desnica, ... Foods 10 (7), 1526, 2021 | 20 | 2021 |
| Emerging contaminants in livestock manure: hormones, antibiotics and antibiotic resistance genes. P Ray, Z Zhao, KF Knowlton Sustainable animal agriculture, 268-283, 2013 | 20 | 2013 |
| Disappearance of infused phytate from the large intestine of dairy heifers PP Ray, C Shang, RE Pearson, KF Knowlton Journal of dairy science 95 (10), 5927-5935, 2012 | 15 | 2012 |
| Method development and validation: solid phase extraction-ultra performance liquid chromatography-tandem mass spectrometry quantification of pirlimycin in bovine feces and urine P Ray, KF Knowlton, C Shang, K Xia Journal of AOAC International 97 (6), 1730-1736, 2014 | 12 | 2014 |
| Fijian Farmers' Attitude and Knowledge Towards Antimicrobial Use and Antimicrobial Resistance in Livestock Production Systems–A Qualitative Study X Khan, RHM Lim, C Rymer, P Ray Frontiers in Veterinary Science 9, 838457, 2022 | 11 | 2022 |
| Quantification of antimicrobial use in Fijian livestock farms X Khan, C Rymer, P Ray, R Lim One Health 13, 100326, 2021 | 11 | 2021 |
Katharine KnowltonVerified email at vt.edu
