Now showing items 1-9 of 9

    • 2.A. Antibiotic resistant bacteria - Prevalence in dairy manure 

      Oliver, Jason; Gooch, Curt (2018-07)
      Generally, less than 15% of tested bacterial isolates from US dairy manure samples are ARB, though for some bacterial species and antibiotics, higher prevalences have been reported. Resistance to tetracycline appears the ...
    • Antibiotic residuals and anaerobic digestion of dairy manure 

      Ray, Lauren; Gooch, Curt (Dairy Environmental Systems Program, 2020-11)
      Antibiotic residuals found in dairy manure can impact the anaerobic digestion process, and conversely anaerobic digestion can impact residual antibiotics that may be present in dairy manure. While anaerobic digesters are ...
    • Antibiotic residuals and composting of dairy manure 

      Ray, Lauren; Gooch, Curt (Dairy Environmental Systems Program, 2020-11)
      The impact of antibiotic residuals on the composting process and the potential mitigation of antibiotic residuals in stockpiles and compost (turned and in-vessel) from a research review is presented. The specific results ...
    • Antibiotic residuals and solid-liquid separation of dairy manure 

      Wright, Peter; Gooch, Curt (Dairy Environmental Systems Program, 2020-11)
      Antibiotic residuals in dairy manure have different characteristics that facilitate sorting by solid-liquid separation. Partitioning of antibiotic residuals, oxytetracycline and sulfadimethoxine, was measured in an on-farm ...
    • ANTIBIOTIC RESISTANCE AND DAIRY PRODUCTION: Frequently Asked Questions 

      Oliver, Jason; Gooch, Curt (2017-08)
      While there may be the potential to improve manure management systems (i.e. composting, storage, anaerobic digestion) to adequately mitigate antibiotic residues, ARB and ARG before land application, currently the best way ...
    • Part 1: Critically important antimicrobials labeled for dairy use 

      Oliver, Jason; Gooch, Curt (2017)
      Most antibiotics used by modern dairy farms are also important human medicines. As antibiotic resistance can spread through the environment, development of resistance at a dairy farm has the potential to reduce efficacy ...
    • Part 2: Sampling dairy manure for antibiotic detection 

      Oliver, Jason; Gooch, Curt (2017)
      While well-established standards for water and wastewater examination exist, standard for manure are lacking. In lieu of standards, and given the inherent heterogeneity of dairy manures, care must be taken to insure that ...
    • Part 3: Laboratory methods for extracting antibiotic residues in dairy manure 

      Oliver, Jason; Gooch, Curt (2017)
      Antibiotic residues must first be extracted (or separated from manure), then purified, so that they can be accurately measured. Just as there is no standard approach to sample manure for antibiotic residues, there is also ...
    • Part 5: What is known about antibiotic residues in dairy manure? 

      Oliver, Jason; Gooch, Curt (2017)
      Antibiotics are chemicals that kill or impede bacterial cell growth. They are important medicines used by dairy farms to treat bovine bacterial infections, prevent infections, and to a declining degree to promote growth/milk ...