1
|
Millar N, Dufour S, Lardé H, Massé J, De Lagarde M, Archambault M, Fairbrother JM, Roy JP, Belloc C, Francoz D, Aenishaenslin C. Redefining On-Farm Practices: The Perceived Impact of a Responsible Antimicrobial Use Regulation on Dairy Farmers. J Dairy Sci 2024:S0022-0302(24)00804-X. [PMID: 38762113 DOI: 10.3168/jds.2024-24667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/30/2024] [Indexed: 05/20/2024]
Abstract
The global food animal industry faces a growing concern regarding antimicrobial resistance (AMR), primarily driven by the use of antimicrobials (AMs) for the treatment, control, and prevention of diseases. Addressing this challenge requires promoting responsible antimicrobial use (AMU) practices. In 2019, the province of Québec, Canada, took a significant step by implementing a regulation that limits the use of AMs of very high importance for human medicine (category I AMs as defined by Health Canada) in the food animal industry. However, the implementation of such regulation can significantly influence behavioral shifts among producers, contributing to the wider effort against AMR. Therefore, the objective of this observational study was to describe the perceived changes in knowledge of dairy producers and on-farm practices following the implementation of this regulation, using a cohort design. Data collection involved administering questionnaires to 87 dairy producers from 3 regions of the province of Québec (Estrie, Montérégie, Centre-Du-Québec) before (2017-2018) and after (2020-2021) the implementation of the regulation. The questionnaires explored the descriptive characteristics of farms, the knowledge of producers about the categorization of AMs, their on-farm treatment practices, and the perceived impacts of the regulation. Statistical analysis included t-tests and McNemar tests to compare the paired data obtained using the 2 questionnaires. The results indicated an increase in the knowledge score (the number of AMs correctly categorized by the producers by their importance for human medicine) after the implementation of the regulation, suggesting an improved understanding of the categorization of AMs based on their importance for human medicine. Trends in AMU practices for treating clinical mastitis and reproductive diseases suggested that category I AMs were less likely to be reported as the primary treatment after the regulation, while category II AMs were more often reported as primary treatment. Adoption of the selective dry cow therapy method significantly increased, while the use of teat sealants remained unchanged. Moreover, producers had divergent perceptions regarding the effect of the regulation on the cure rates and disease frequencies. This disparity emphasizes the need for comprehensive data collection to discern the risks associated with such regulatory shifts. The study acknowledges several limitations, including the potential for recall bias, confirmation bias, and desirability bias. Despite these limitations, this study shows that implementing regulations to encourage responsible AMU drives positive transformations in producers' knowledge and on-farm practices. This underscores the pivotal impact of proactive interventions in combating the escalating threat of AMR within the global food animal industry.
Collapse
Affiliation(s)
- Nikky Millar
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Centre de recherche en santé publique, Université de Montréal et Centre intégré de santé et de services sociaux du Québec du Centre-Sud-de-l'Île-de-Montréal, Montréal, QC, Canada; Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada.
| | - Simon Dufour
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
| | - Hélène Lardé
- Ross University School of Veterinary Medicine, P.O. Box 334, Basseterre, St. Kitts, West Indies
| | - Jonathan Massé
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
| | - Maud De Lagarde
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; WOAH Reference Laboratory for Escherichia coli, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S2M2·; Swine and Poultry Infectious Research Center (CRIPA-FQRNT), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S2M2, Canada
| | - Marie Archambault
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Swine and Poultry Infectious Research Center (CRIPA-FQRNT), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S2M2, Canada
| | - John Morris Fairbrother
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; WOAH Reference Laboratory for Escherichia coli, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S2M2·; Swine and Poultry Infectious Research Center (CRIPA-FQRNT), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC J2S2M2, Canada
| | - Jean-Philippe Roy
- Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada; Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Catherine Belloc
- Biologie, Épidémiologie et Analyses de risque en santé animale (BIOEPAR), ONIRIS-INRAE, Nantes, France
| | - David Francoz
- Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada; Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Cécile Aenishaenslin
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada; Centre de recherche en santé publique, Université de Montréal et Centre intégré de santé et de services sociaux du Québec du Centre-Sud-de-l'Île-de-Montréal, Montréal, QC, Canada
| |
Collapse
|
2
|
Almansour AM, Alhadlaq MA, Alzahrani KO, Mukhtar LE, Alharbi AL, Alajel SM. The Silent Threat: Antimicrobial-Resistant Pathogens in Food-Producing Animals and Their Impact on Public Health. Microorganisms 2023; 11:2127. [PMID: 37763971 PMCID: PMC10537193 DOI: 10.3390/microorganisms11092127] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 08/10/2023] [Accepted: 08/16/2023] [Indexed: 09/29/2023] Open
Abstract
The emergence of antimicrobial resistance (AMR) is a global health problem without geographic boundaries. This increases the risk of complications and, thus, makes it harder to treat infections, which can result in higher healthcare costs and a greater number of deaths. Antimicrobials are often used to treat infections from pathogens in food-producing animals, making them a potential source of AMR. Overuse and misuse of these drugs in animal agriculture can lead to the development of AMR bacteria, which can then be transmitted to humans through contaminated food or direct contact. It is therefore essential to take multifaceted, comprehensive, and integrated measures, following the One Health approach. To address this issue, many countries have implemented regulations to limit antimicrobial use. To our knowledge, there are previous studies based on AMR in food-producing animals; however, this paper adds novelty related to the AMR pathogens in livestock, as we include the recent publications of this field worldwide. In this work, we aim to describe the most critical and high-risk AMR pathogens among food-producing animals, as a worldwide health problem. We also focus on the dissemination of AMR genes in livestock, as well as its consequences in animals and humans, and future strategies to tackle this threat.
Collapse
Affiliation(s)
- Ayidh M. Almansour
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh 11671, Saudi Arabia; (M.A.A.); (K.O.A.); (A.L.A.)
| | - Meshari A. Alhadlaq
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh 11671, Saudi Arabia; (M.A.A.); (K.O.A.); (A.L.A.)
| | - Khaloud O. Alzahrani
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh 11671, Saudi Arabia; (M.A.A.); (K.O.A.); (A.L.A.)
| | - Lenah E. Mukhtar
- Antimicrobial Resistance Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh 11671, Saudi Arabia;
| | - Abdulmohsen L. Alharbi
- Molecular Biology Division, Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh 11671, Saudi Arabia; (M.A.A.); (K.O.A.); (A.L.A.)
| | - Sulaiman M. Alajel
- Reference Laboratory for Microbiology, Executive Department of Reference Laboratories, Research and Laboratories Sector, Saudi Food and Drug Authority (SFDA), Riyadh 11671, Saudi Arabia;
| |
Collapse
|
3
|
Alvarado-Martinez Z, Tabashsum Z, Aditya A, Suh G, Wall M, Hshieh K, Biswas D. Purified Plant-Derived Phenolic Acids Inhibit Salmonella Typhimurium without Alteration of Microbiota in a Simulated Chicken Cecum Condition. Microorganisms 2023; 11:microorganisms11040957. [PMID: 37110380 PMCID: PMC10144919 DOI: 10.3390/microorganisms11040957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/23/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Salmonella enterica serovar Typhimurium (ST) remains a predominant zoonotic pathogen because of its colonization in poultry, survivability in the environment, and increasing antibiotic-resistance pattern. Plant-derived phenolics, gallic acid (GA), protocatechuic acid (PA), and vanillic acids (VA) have demonstrated antimicrobial activity in vitro; therefore, this study collected chicken cecal fluid and supplemented it with these phenolics to evaluate their potential for eliminating ST and mod-ulating the microbiota of complex environments. ST was quantified through plating, while micro-biome analysis was performed through pair-end 16S-rRNA gene sequencing. CFU/mL of ST in cecal fluid with GA was significantly reduced by 3.28 and 2.78 log at 24 h and 48 h, while PA only had a slight numerical decrease. VA significantly reduced ST by 4.81 and 5.20 log at 24 h and 48 h. Changes in relative abundance of major phyla were observed at 24 h for samples with GA and VA as Firmicute levels increased 8.30% and 20.90%, while Proteobacteria decreased 12.86% and 18.48%, respectively. Significant changes in major genre were observed in Acinetobacter (3.41% for GA) and Escherichia (13.53% for VA), while Bifidobacterium increased (3.44% for GA) and Lactobacillus remained unchanged. Results suggest that phenolic compounds exert different effects on certain pathogens, while supporting some commensal bacteria.
Collapse
Affiliation(s)
- Zabdiel Alvarado-Martinez
- Biological Sciences Program-Molecular and Cellular Biology, University of Maryland-College Park, College Park, MD 20742, USA
| | - Zajeba Tabashsum
- Biological Sciences Program-Molecular and Cellular Biology, University of Maryland-College Park, College Park, MD 20742, USA
| | - Arpita Aditya
- Department of Animal and Avian Sciences, University of Maryland-College Park, College Park, MD 20742, USA
| | - Grace Suh
- Department of Biology, University of Maryland-College Park, College Park, MD 20742, USA
| | - Matthew Wall
- Department of Biology, University of Maryland-College Park, College Park, MD 20742, USA
| | - Katherine Hshieh
- Department of Biology, University of Maryland-College Park, College Park, MD 20742, USA
| | - Debabrata Biswas
- Biological Sciences Program-Molecular and Cellular Biology, University of Maryland-College Park, College Park, MD 20742, USA
- Department of Animal and Avian Sciences, University of Maryland-College Park, College Park, MD 20742, USA
- Center for Food Safety and Security Systems, University of Maryland-College Park, College Park, MD 20742, USA
| |
Collapse
|
4
|
Millar N, Dufour S, Lardé H, Roy JP, Belloc C, Francoz D, Paradis MÈ, Archambault M, Fairbrother JM, Aenishaenslin C. Barriers and facilitators to implementing a new regulation restricting antimicrobial use in dairy production in Québec, Canada: A qualitative study. Front Vet Sci 2023; 10:1025781. [PMID: 37008362 PMCID: PMC10060835 DOI: 10.3389/fvets.2023.1025781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 02/23/2023] [Indexed: 03/18/2023] Open
Abstract
With the emergence of antimicrobial resistance (AMR), many countries are implementing restrictive regulations to reduce antimicrobial use (AMU) in animal production. Although these measures are effective at the national level, their implementation may generate challenges for producers and veterinarians. The objective of this study was to explore the barriers and facilitators of implementing a new regulation restricting the use of antimicrobials of very high importance for human health in the dairy production sector in the province of Québec, Canada. Individual interviews were conducted with fifteen veterinarians and twenty-seven dairy producers. Thematic analysis was performed based on the COM-B model of behavior change (capability-opportunity-motivation-behavior). Our results indicated that the lack of availability of alternative treatments, the long delays related to diagnostic tests and the fear of economic consequences were major barriers to the implementation of the regulation. A small number of producers also perceived that the regulation negatively impacted the health and wellbeing of their animals. Additionally, participants acknowledged the importance of early education and training to better understand the purpose of the regulation and increase its acceptability. Lastly, most participants reported that they had not only reduced their use of antimicrobials of very high importance for human health following the regulation, but they had also increased preventive practices on their farm. This study reveals that the implementation of restrictive regulations to reduce AMU in animal production can lead to multiple challenges in practice. Our results highlight the need for better communication and training of producers and veterinarians before and during the implementation of similar regulations in the future and underline the importance of measuring the direct and indirect impacts of those regulations on productivity and on animal health and wellbeing.
Collapse
Affiliation(s)
- Nikky Millar
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Centre de recherche en santé publique, Université de Montréal et Centre intégré de santé et de services sociaux du Québec du Centre-Sud-de-l'Île-de-Montréal, Montréal, QC, Canada
- Fond de recherche Nature et technologies du Québec (FRQNT)—Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
| | - Simon Dufour
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Fond de recherche Nature et technologies du Québec (FRQNT)—Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
| | - Hélène Lardé
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Fond de recherche Nature et technologies du Québec (FRQNT)—Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
- Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis
| | - Jean-Philippe Roy
- Fond de recherche Nature et technologies du Québec (FRQNT)—Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Catherine Belloc
- Biologie, Épidémiologie et Analyses de risque en santé animale (BIOEPAR), ONIRIS-INRAE, Nantes, France
| | - David Francoz
- Fond de recherche Nature et technologies du Québec (FRQNT)—Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Marie-Ève Paradis
- Association des médecins vétérinaires praticiens du Québec, Saint-Hyacinthe, QC, Canada
| | - Marie Archambault
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Fond de recherche Nature et technologies du Québec (FRQNT)—Regroupement FRQNT Op+lait, Saint-Hyacinthe, QC, Canada
| | - John Morris Fairbrother
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Cécile Aenishaenslin
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Groupe de recherche en épidémiologie des zoonoses et santé publique (GREZOSP), Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Centre de recherche en santé publique, Université de Montréal et Centre intégré de santé et de services sociaux du Québec du Centre-Sud-de-l'Île-de-Montréal, Montréal, QC, Canada
- *Correspondence: Cécile Aenishaenslin
| |
Collapse
|
5
|
Patience JF, Ramirez A. Invited review: strategic adoption of antibiotic-free pork production: the importance of a holistic approach. Transl Anim Sci 2022; 6:txac063. [PMID: 35854972 PMCID: PMC9278845 DOI: 10.1093/tas/txac063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 05/13/2022] [Indexed: 02/07/2023] Open
Abstract
The discovery of the use of antibiotics to enhance growth in the 1950s proved to be one of the most dramatic and influential in the history of animal agriculture. Antibiotics have served animal agriculture, as well as human and animal medicine, well for more than seven decades, but emerging from this tremendous success has been the phenomenon of antimicrobial resistance. Consequently, human medicine and animal agriculture are being called upon, through legislation and/or marketplace demands, to reduce or eliminate antibiotics as growth promotants and even as therapeutics. As explained in this review, adoption of antibiotic-free (ABF) pork production would represent a sea change. By identifying key areas requiring attention, the clear message of this review is that success with ABF production, also referred to as "no antibiotics ever," demands a multifaceted and multidisciplinary approach. Too frequently, the topic has been approached in a piecemeal fashion by considering only one aspect of production, such as the use of certain feed additives or the adjustment in health management. Based on the literature and on practical experience, a more holistic approach is essential. It will require the modification of diet formulations to not only provide essential nutrients and energy, but to also maximize the effectiveness of normal immunological and physiological capabilities that support good health. It must also include the selection of effective non-antibiotic feed additives along with functional ingredients that have been shown to improve the utility and architecture of the gastrointestinal tract, to improve the microbiome, and to support the immune system. This holistic approach will require refining animal management strategies, including selection for more robust genetics, greater focus on care during the particularly sensitive perinatal and post-weaning periods, and practices that minimize social and environmental stressors. A clear strategy is needed to reduce pathogen load in the barn, such as greater emphasis on hygiene and biosecurity, adoption of a strategic vaccine program and the universal adoption of all-in-all-out housing. Of course, overall health management of the herd, as well as the details of animal flows, cannot be ignored. These management areas will support the basic biology of the pig in avoiding or, where necessary, overcoming pathogen challenges without the need for antibiotics, or at least with reduced usage.
Collapse
Affiliation(s)
| | - Alejandro Ramirez
- College of Veterinary Medicine, University of Arizona, Oro Valley, AZ 85737, USA
| |
Collapse
|
6
|
Cobo-Angel C, LeBlanc SJ, Roche SM, Ritter C. A Focus Group Study of Canadian Dairy Farmers' Attitudes and Social Referents on Antimicrobial Use and Antimicrobial Resistance. Front Vet Sci 2021; 8:645221. [PMID: 34212017 PMCID: PMC8239135 DOI: 10.3389/fvets.2021.645221] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/18/2021] [Indexed: 11/22/2022] Open
Abstract
As part of broader actions to combat antimicrobial resistance (AMR), health authorities have promoted the reduction of antimicrobial use (AMU) in food animals. Farmers' attitudes and receptivity to reduction of AMU appear to be variable and context specific. Our research objectives were to gain insight into Canadian dairy farmers' attitudes toward AMU, AMR, and AMU-reduction in the dairy industry, and to explore drivers and barriers to change AMU, including the influence of social referents. We conducted seven focus groups with 42 farmers in two provinces of Canada (New Brunswick and Ontario) and used thematic analysis to identify, analyze, and report patterns in the data. Our results indicate that farmers usually rely on their previous experience and judgement of individual cases of disease when making decisions related to AMU. External referents included other farmers, family members, and veterinarians. However, veterinarians were generally only consulted for unusual cases. Participants in this study expressed that maintaining cattle welfare is their responsibility, and that they were not willing to jeopardize animal welfare in order to reduce AMU. In addition, farmers regarded the cost of investment in improved facilities to prevent disease as an important barrier to reduce AMU. Finally, the majority of participants considered themselves to be low users of antimicrobials and perceived a small role of AMU on dairy farms in AMR. In conclusion, farmers from this study showed self-reliance to decide about AMU on their farms and considered animal-related and economic factors in these decisions. There was a general lack of knowledge of how to reduce AMU without investing in facilities, and there is an opportunity to motivate increased involvement of the veterinarian in AMU-related decisions. These results should be considered to design and refine antimicrobial stewardship programs for dairy farms.
Collapse
Affiliation(s)
- Claudia Cobo-Angel
- Department of Population Medicine, University of Guelph, Guelph, ON, Canada
| | - Stephen J LeBlanc
- Department of Population Medicine, University of Guelph, Guelph, ON, Canada
| | - Steven M Roche
- Department of Population Medicine, University of Guelph, Guelph, ON, Canada.,Agricultural Communications & Epidemiological Research (ACER) Consulting Limited, Guelph, ON, Canada
| | - Caroline Ritter
- Department of Health Management, University of Prince Edward Island, Charlottetown, PE, Canada
| |
Collapse
|
7
|
Knowledge, attitude and practice of animal producers towards antimicrobial use and antimicrobial resistance in Oromia zone, north eastern Ethiopia. PLoS One 2021; 16:e0251596. [PMID: 33979388 PMCID: PMC8115805 DOI: 10.1371/journal.pone.0251596] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/29/2021] [Indexed: 12/02/2022] Open
Abstract
Antimicrobial resistance is the failure of antimicrobial’s effect against the growth and multiplication of microorganisms. Imprudent and over antimicrobial use (AMU) aggravates antimicrobial resistance (AMR). Antimicrobials are massively used in animal production as compared with AMU in human health sectors. This research was done with the objective of assessing the knowledge, attitude, and practice (KAP) status of animal producers towards AMU and AMR. A Cross-sectional study design and questionnaire were conducted and both qualitative and quantitative data analyses were used. The logistic regression was used to test the effect of each predictor variable on the knowledge, attitude, and practice of the participants. Out of 571 animal producers, the majority (80.2%) of them were not knowledgeable and 85.3% of the animal producers had a negative attitude towards the AMU and AMR. Likewise, the practice of 78.5% of the animal producers were practice improperly towards AMU and AMR. All the questions that were designed to assess the KAP of the animal producers were significantly associated (P<0.05) with each respective category of KAP. The educational status of animal producers was negatively correlated (OR = 0.38) with all their knowledge, attitude, and practice of AMU and AMR, but sex has a positive correlation (OR = 2.89) with both the knowledge and practice of animal producers. In conclusion, the animal producers in the Oromia zone had unsatisfactory knowledge regarding AMU and AMR. The animal producer’s attitude and their practices were negative and improper respectively. As a result, consecutive awareness creation on both AMU and AMR is recommended and integrated AMU governance in animal production is recommended to be applied.
Collapse
|
8
|
Kasimanickam V, Kasimanickam M, Kasimanickam R. Antibiotics Use in Food Animal Production: Escalation of Antimicrobial Resistance: Where Are We Now in Combating AMR? Med Sci (Basel) 2021; 9:medsci9010014. [PMID: 33669981 PMCID: PMC7931007 DOI: 10.3390/medsci9010014] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 12/17/2022] Open
Abstract
The use of antibiotics has been very beneficial to human health, animal wellbeing, and food production, however, there are no alternatives to antimicrobials in treating infectious diseases. Their use can contribute to the development of antimicrobial resistance, but the world has realized the need to combat antimicrobial resistance in recent decades due to the continued escalation of the problem jeopardizing human and veterinary medicine and food and environmental safety. Understanding the AMR and judicious use of antimicrobials are critical, and one health approach involving several sectors and multiple disciplines is important to tackle the problem. National, regional, and global action plans have been instigated to tackle the escalation of AMR. Antimicrobials are frequently used in food animal production. Therefore, food animal producers are important participants to prevent overuse and misuse of antimicrobials. Recent regulations to address the challenges have not been perceived well in animal farming communities. More awareness regarding these action plans and understanding the impact of AMR are needed. A nationwide survey of perceptions of food animal producers regarding AMR mitigation approaches should be conducted to evaluate the effectiveness of the current policies regarding antibiotics use and AMR. These outcomes should be incorporated in future policies and awareness campaigns targeting food animal producers.
Collapse
Affiliation(s)
- Vanmathy Kasimanickam
- Veterinary Clinical Sciences Department, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA;
- AARVEE Animal Biotech, LLC, Corvallis, OR 97333, USA
- Correspondence: or
| | - Maadhanki Kasimanickam
- School of Biological and Population Health Sciences College of Public Health & Human Sciences, Oregon State University, Corvallis, OR 97331, USA;
| | - Ramanathan Kasimanickam
- Veterinary Clinical Sciences Department, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA;
| |
Collapse
|
9
|
Wemette M, Greiner Safi A, Wolverton AK, Beauvais W, Shapiro M, Moroni P, Welcome FL, Ivanek R. Public perceptions of antibiotic use on dairy farms in the United States. J Dairy Sci 2021; 104:2807-2821. [PMID: 33455793 DOI: 10.3168/jds.2019-17673] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 09/21/2020] [Indexed: 11/19/2022]
Abstract
There has been a global push for improved antimicrobial stewardship, including in animal agriculture, due to growing concerns about antimicrobial resistance. However, little is known about the general public's perceptions of antimicrobial use in animal agriculture. The aim of this study was to explore the US public's perceptions of antibiotic use in dairy farming and how these perceptions influence purchasing decisions. Data from the 2017 Cornell National Social Survey developed in collaboration with the Cornell Survey Research Institute were used to assess the public's perceptions. The Survey Research Institute of Cornell University (Ithaca, NY) administered the survey by telephone to a random sample of 1,000 adults in the continental United States. The survey collected information about perceptions of threat to human health posed by antibiotic use in cows on dairy farms and willingness to pay more for milk from cows raised without antibiotics, as well as several presumed explanatory variables, including respondents' knowledge of antibiotics, beliefs regarding cattle treatment in dairy farming, and 18 sociodemographic characteristics. Data were analyzed using logistic regression. Among respondents, 90.7% (n = 892/983) reported that antibiotic use on dairy farms posed some level of threat to human health and 71.5% (n = 580/811) indicated they would be willing to pay more for milk produced from cows raised without antibiotics. Respondents who believed that antibiotic use in dairy farming posed a moderate to high threat to human health were more likely to be female and report willingness to pay more for milk or not purchase milk. Additionally, consumers' willingness to pay more for milk from cattle raised without antibiotics was associated with the belief that antibiotic use posed some threat to human health, the belief that cows are treated better on organic dairy farms, an annual household income of $50,000 or greater, being born outside the United States, having a liberal social ideology, and being currently or formerly married. These results suggest that the general public's decisions as consumers of dairy products are associated with demographic factors in addition to perceptions of antibiotic use and cattle treatment in dairy farming. The rationale behind such perceptions should be further explored to facilitate consumers' informed decision making about antibiotic use in agriculture, links to cattle treatment, and associated willingness-to-pay attitudes.
Collapse
Affiliation(s)
- M Wemette
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.
| | - A Greiner Safi
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853; Department of Communication, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853
| | - A K Wolverton
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
| | - W Beauvais
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
| | - M Shapiro
- Department of Communication, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853
| | - P Moroni
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853; Quality Milk Production Services, Animal Health Diagnostic Center, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853; Università degli Studi di Milano, Dipartimento di Medicina Veterinaria, 20133 Milan, Italy
| | - F L Welcome
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853; Quality Milk Production Services, Animal Health Diagnostic Center, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
| | - R Ivanek
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
| |
Collapse
|
10
|
Lemos Teixeira D, Enriquez-Hidalgo D, Estay Espinoza T, Bas F, Hötzel MJ. Meat Consumers' Opinion Regarding Unhealthy Pigs: Should They Be Treated with Antibiotics or Euthanized on Farm? Antibiotics (Basel) 2021; 10:60. [PMID: 33435299 PMCID: PMC7826963 DOI: 10.3390/antibiotics10010060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to investigate the opinions of meat consumers (n = 1780) on on-farm management of unhealthy pigs, whether support for treatment with antibiotics varies according with chance of recovery, and the effect of knowledge on the use of antibiotics on these opinions. Most participants believed that the use of antibiotics was the best solution for unhealthy pigs, and this was associated with a low level of knowledge about antibiotics. Increasing the probability of recovery after treatment increased support for treating pigs with antibiotics. However, the majority of participants rejected the consumption of meat from animals housed in "hospital pens". After price, concern with food safety was the second main factor that influenced participants' choice when buying meat. Support for the use of antibiotics to deal with unhealthy pigs in "hospital pens", as well as for consumption of the meat from these animals, was higher among participants involved in agriculture. This shows that consumers are unaware of the potential negative repercussions for animal welfare associated with banning or reducing the use of antibiotics in livestock production, which is an important concern for the industry.
Collapse
Affiliation(s)
- Dayane Lemos Teixeira
- Instituto de Ciencias Agroalimentarias, Animales y Ambientales (ICA3), Universidad de O’Higgins, San Fernando 3070000, Chile
- Animal Welfare Program, IRTA, Monells, 17121 Girona, Spain
- Departamento de Ciencias Animales, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (T.E.E.); (F.B.)
| | - Daniel Enriquez-Hidalgo
- Bristol Veterinary School, University of Bristol, Langford, Bristol BS40 5DU, UK
- Sustainable Agriculture Sciences Department, Rothamsted Research, North Wyke, Okehampton EX20 2SB, UK
| | - Tamara Estay Espinoza
- Departamento de Ciencias Animales, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (T.E.E.); (F.B.)
| | - Fernando Bas
- Departamento de Ciencias Animales, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile; (T.E.E.); (F.B.)
| | - Maria José Hötzel
- Laboratório de Etologia Aplicada e Bem-Estar Animal, Universidade Federal de Santa Catarina, Rod. Admar Gonzaga 1346, Itacorubi, Florianópolis 88034-001, Brazil;
| |
Collapse
|
11
|
Basit MA, Kadir AA, Loh TC, Abdul Aziz S, Salleh A, Zakaria ZA, Banke Idris S. Comparative Efficacy of Selected Phytobiotics with Halquinol and Tetracycline on Gut Morphology, Ileal Digestibility, Cecal Microbiota Composition and Growth Performance in Broiler Chickens. Animals (Basel) 2020; 10:ani10112150. [PMID: 33227911 PMCID: PMC7699210 DOI: 10.3390/ani10112150] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 11/01/2020] [Accepted: 11/10/2020] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Antimicrobial growth promoters (AGPs) are banned in Europe but still used in many countries including Asia. However, their indiscriminate use resulted in antibiotic-resistant bacterial strains that possibly transfer the resistant genes to the microorganisms pertinent to human health. Hence, it is essential to find alternatives that can improve the production performance in broiler chickens. In this scenario, phytobiotics or phytogenic feed additives (PFAs) are widely investigated to evaluate their influence on improving gut health, increasing digestibility, and thereby the growth performance. The present study is a continuity of our experiments on dietary inclusion of Piper betle and Persicaria odorata leaf meal and the first of its kind to evaluate the comparative efficacy of phytobiotics (Piper betle and Persicaria odorata leaf meal), with halquinol and tetracycline in broiler chickens. The current experiment findings indicated that, in comparison with the control group, either of the dietary treatments positively modulated the gut morphology, improved ileal digestibility, maintained the intestinal population of Lactobacillus and reduced the pathogenic bacteria such as Staphylococcus aureus, Salmonella, Escherichia coli, and Clostridium spp., thus improved the growth performance in broiler chickens. Abstract The current experiment was designed to estimate the comparative efficacy of selected phytobiotics Persicaria odorata leaf meal (POLM) and Piper betle leaf meal (PBLM) with halquinol, and tetracycline in broiler chickens. The 150-day-old broiler chickens were randomly assigned to five dietary groups. The dietary supplementation groups were the basal diet (BD), which served as the negative control (NC), and BD + 0.2 g/kg tetracycline, which served as the positive control (PC); BD + 0.03 g/kg halquinol (HAL), BD + 8 g/kg POLM (Po8), and BD + 4 g/kg PBLM (Pb4) were the treatment groups. Growth performance, gut morphology, ileal digestibility, and cecal microbiota composition were measured. On day 21, the body weight gain (BWG) was enhanced (p < 0.05) in the broiler chickens fed on phytobiotics (Po8 and Pb4) relative to the NC group, however, on day 42 and in terms of overall growth performance, BWG was enhanced (p < 0.05 in diets (Po8, Pb4, HAL and PC) in comparison with the NC group. Conversely, feed conversion ratio (FCR) was recorded reduced (p < 0.05) in Pb4, Po8, HAL, and PC group in comparison with the NC group. Supplementation of phytobiotics (Po8 and Pb4), HAL and PC, positively improved the gut morphology compared to the NC group. Furthermore, the maximum (p < 0.05) villus height (VH) in duodenum and jejunum was observed in broilers fed on diet Pb4. Supplementation of phytobiotics, HAL and PC, improved (p < 0.05) the digestibility of dry matter (DM) (except for HAL), organic matter (OM), crude protein (CP), ether extract (EE), and ash compared to the NC group. Dietary supplementation of phytobiotics (Po8 and Pb4), HAL and PC, significantly reduced the E. coli, Salmonella, and Staphylococcus aureus (except for HAL) counts compared to the NC group. However, supplementation of Pb4 resulted in significantly decreased total anaerobic bacteria and Clostridium spp. counts compared to the NC group. In addition, supplementation of phytobiotics significantly increased the Lactobacillus count compared to HAL, PC, and NC groups. In conclusion, dietary supplementation of phytobiotics improved the gut morphology, positively modulated and maintained the dynamics of cecal microbiota with enhanced nutrient digestibility, thus, increased the growth performance. Based on current results, phytobiotics could be used as an alternative to AGPs for sustainable broiler chicken production.
Collapse
Affiliation(s)
- Muhammad Abdul Basit
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
- Department of Biosciences, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan 60000, Punjab, Pakistan
- Correspondence: (M.A.B.); (A.A.K.); Tel.: +60-3-9769-3403 (A.A.K.)
| | - Arifah Abdul Kadir
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
- Correspondence: (M.A.B.); (A.A.K.); Tel.: +60-3-9769-3403 (A.A.K.)
| | - Teck Chwen Loh
- Department of Animal Sciences, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Saleha Abdul Aziz
- Department of Veterinary Pathology & Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Annas Salleh
- Department of Veterinary Laboratory Diagnostics, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Zainul Amiruddin Zakaria
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Sherifat Banke Idris
- Department of Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
- Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine Usmanu Danfodiyo University, Skoto 2346, Nigeria
| |
Collapse
|
12
|
Bae D, Kim DH, Chon JW, Song KY, Seo KH. Synergistic effects of the early administration of Lactobacillus kefiranofaciens DN1 and Kluyveromyces marxianus KU140723-05 on the inhibition of Salmonella Enteritidis colonization in young chickens. Poult Sci 2020; 99:5999-6006. [PMID: 33142518 PMCID: PMC7647741 DOI: 10.1016/j.psj.2020.07.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 07/01/2020] [Accepted: 07/06/2020] [Indexed: 01/25/2023] Open
Abstract
In this study, we aimed to assess the feasibility of the lactic acid bacterium Lactobacillus kefiranofaciens DN1 (LKF_DN1) and the yeast Kluyveromyces marxianus KU140723-05 (KMA5), recently isolated from kefir, as probiotics. Specifically, we evaluated the effect of early administration of these 2 microbes on the inhibition of Salmonella Enteritidis (SE) colonization in neonatal chicks. We also examined the effects of exposure of chicks to probiotics before SE exposure on the reduction in the number of gut SE. A total of 108 1-day-old specific-pathogen-free male layer chicks were used for 3 independent experiments. The experimental chicks were randomly divided into 6 groups (negative control: basal diet [BD] without probiotics and SE; positive control: BD; probiotic group [PG] 1: BD + LKF_DN1; PG2: BD + KMA5; PG3: BD + LKF_DN1 + KMA5; and PG4: BD+ a commercial product IDF-7), all of which, except negative control, were coadministered with SE strain resistant to rifampicin (SERR). We found that the administration of LKF_DN1 and/or KMA5 reduced the number of viable cells of the SERR strain in chicks by up to 1.90 log10, relative to positive control chicks. Compared with late administration (day [D] 10 and D11), early administration (D1 and D2) of the probiotics was more effective in reducing SERR cell numbers in the gut. Furthermore, we detected no significant difference in the reduction of gut SERR cell numbers in chicks from the same groups exposed to the probiotics at D10 and D11 before and after administration with SERR. Collectively, our findings indicate that, as dietary additives, LKF_DN1 and KMA5 showed potential probiotic activity in chicks. Moreover, the combination of the lactic acid bacteria and/or yeast strain was found to rapidly reduce SE numbers in the chick gut and showed a prolonged inhibitory effect against SE colonization. We, thus, propose that the administration of these 2 probiotics, as early as possible after hatching, would be considerably effective in controlling SE colonization in the guts of chicks.
Collapse
Affiliation(s)
- Dongryeoul Bae
- KU Center for Food Safety, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Dong-Hyeon Kim
- KU Center for Food Safety, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Jung-Whan Chon
- KU Center for Food Safety, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Kwang-Young Song
- KU Center for Food Safety, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Kun-Ho Seo
- KU Center for Food Safety, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea.
| |
Collapse
|
13
|
Wemette M, Safi AG, Beauvais W, Ceres K, Shapiro M, Moroni P, Welcome FL, Ivanek R. New York State dairy farmers' perceptions of antibiotic use and resistance: A qualitative interview study. PLoS One 2020; 15:e0232937. [PMID: 32459799 PMCID: PMC7252592 DOI: 10.1371/journal.pone.0232937] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 04/24/2020] [Indexed: 11/18/2022] Open
Abstract
Antibiotic resistance is a global problem affecting both human and animal health. Ensuring the strategic and effective use of antibiotics is paramount to combatting the emergence and spread of resistance. This study explored New York State (NYS) dairy farmers' perceptions regarding antibiotic use in dairy farming and antibiotic resistance. Dairy farmers' perceptions were assessed through semi-structured, in-person interviews. Twenty interviews with farm owners and/or managers of 15 conventional and five USDA certified organic dairy farms with 40 to 2,300 lactating cows were conducted. Thematic analysis was used to assess, compare and contrast transcripts for farmers' characterization of their beliefs, values, and concerns. Conventional dairy farmers had a low level of concern about the possible impacts of on-farm antibiotic resistance on human health and believed their antibiotic use was already judicious. Generally, they believed their cattle's health would suffer if antibiotic use were further curtailed. Conventional farmers expressed frustration over the possibility of more stringent governmental, milk cooperative, buyer, or marketer requirements for antibiotic use and associated animal welfare in the future. They attributed expanding regulations in part to misinformed consumer preferences, that farmers felt were influenced by the marketing of organic dairy products. Organic dairy farmers were generally more concerned about issues related to antibiotic resistance than conventional farmers. Both conventional and organic farmers placed emphasis on disease prevention through herd health management rather than treatment. In conclusion, the conventional NYS dairy farmers in this study were skeptical of the need for and benefits of reduced antibiotic use on their dairy farms. Interventions for farmers, delivered by a trusted source such as a veterinarian, that provide training about proper antibiotic use practices and information of possible financial benefits of refining antibiotic use may hold promise.
Collapse
Affiliation(s)
- Michelle Wemette
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Amelia Greiner Safi
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
- Department of Communication, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York, United States of America
| | - Wendy Beauvais
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Kristina Ceres
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Michael Shapiro
- Department of Communication, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York, United States of America
| | - Paolo Moroni
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
- Quality Milk Production Services, Animal Health Diagnostic Center, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Francis L. Welcome
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
- Quality Milk Production Services, Animal Health Diagnostic Center, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Renata Ivanek
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| |
Collapse
|