Antimicrobial Use in the Swine Production Chain and Implications for Environmental Impacts and Human Health: Current Status, Challenges, and Future Prospects

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Pigs".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 2221

Special Issue Editors


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Guest Editor
Departament de Sanitat i d’Anatomia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
Interests: zoonotic agents; antimicrobial resistance; infectious diseases; domestic animals; wildlife

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Guest Editor
Food Hygiene and Inspection Unit, Department of Animal and Food Science, Faculty of Veterinary Sciences, Autonomous University of Barcelona, Bellaterra, Spain
Interests: food safety; biofilms; antimicrobial resistance; disinfection; microbial ecology; foodborne bacteria; OMICS
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Food Hygiene and Inspection Unit, Department of Animal and Food Science, Faculty of Veterinary Sciences, Autonomous University of Barcelona, Bellaterra, Spain
Interests: biofilms; microbiota; foodborne pathogens; disinfectants; resistance; sublethal concentrations; gene expression; food preservation; hygiene; food safety
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, an increasing demand for animal protein, especially in developing countries, has taken place, lead to an increased practice of intensive farming. This has provoked the extensive use of antimicrobial chemotherapy in production animals, such as in the swine production chain, leading to antibiotic residues that have been deployed in the environment, significantly contributing to the insurgency of several antimicrobial resistances (AMR). Environmentally speaking, the combination of these antibiotic residues with other biocides, i.e., disinfectants, used for facilities’ sanitation procedures, leads to the establishment of biofilms acting as true shelters for multidrug-resistant (MDR) bacteria, such as Salmonella spp., Campylobacter jejuni, or methicillin-resistant Staphylococcus aureus (MRSA), which can reach human beings via foodstuffs derived from the swine production chain. Hence, to control the spread of AMR, it is of upmost importance to develop novel strategies targeting the ongoing spread of AMR, taking care of the animal–human–environment continuum, i.e., following a One Health approach, involving specialists in veterinary sciences, microbiologists, and food technologists, among others.

Therefore, this Special Issue will focus on the current situation regarding the use of antibiotics and biocides in swine farming, abattoirs, and processing plants linked to the swine production chain, from a holistic point of view. In addition to this, ongoing research regarding specific strategies and alternatives aiming to mitigate the increasing level of AMR worldwide will be also covered. The goal is to provide key information to improve animal health and welfare through the improvement of management, husbandry, facilities, and staff training, having a direct effect on both environmental and human health.

We kindly invite original research articles, critical reviews, and commentaries from specialists worldwide. Research areas may include but are not limited to topics such as efforts to reduce animal stress during farming to reduce the use of antibiotics, environmental control in slaughterhouses and processing plants, and risk assessment linked to AMR and MDR bacteria.

Prof. Dr. Laila Darwich
Dr. Pedro Rodríguez-López
Dr. Carolina Ripolles-Avila
Guest Editors

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Keywords

  • animal welfare
  • antibiotic resistance
  • antimicrobials
  • biocides
  • biofilm
  • disinfection
  • food safety
  • One Health
  • risk assessment
  • swine production chain

Published Papers (2 papers)

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12 pages, 1088 KiB  
Article
Characterization of Antimicrobial Resistance in Escherichia coli Isolated from Diarrheic and Healthy Weaned Pigs in Catalonia
by Biel Garcias, Marga Martin and Laila Darwich
Animals 2024, 14(3), 487; https://0-doi-org.brum.beds.ac.uk/10.3390/ani14030487 - 01 Feb 2024
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Abstract
Postweaning diarrhea (PWD) is a multifactorial concern in the swine industry that leads to high antibiotic consumption, usually without testing susceptibility, increasing the risk of the selection of Escherichia coli-resistant strains. In this study, 251 E. coli strains isolated from fecal samples [...] Read more.
Postweaning diarrhea (PWD) is a multifactorial concern in the swine industry that leads to high antibiotic consumption, usually without testing susceptibility, increasing the risk of the selection of Escherichia coli-resistant strains. In this study, 251 E. coli strains isolated from fecal samples of diarrheic (n = 148) and apparently healthy piglets (n = 103) in farms in Catalonia were tested against their susceptibility to fourteen different antimicrobials. The phenotypic antimicrobial resistance (AMR) testing revealed high levels of AMR, with 41.4% of the isolates presenting a multidrug-resistant (MDR) profile. More specifically, resistance to class D (prudence) antimicrobials such as erythromycin (99.6%), amoxicillin (95.2%), streptomycin (91.6%), tetracycline (88.8%), lincospectin (64.5%), and sulfamethoxazole/trimethoprim (60%) was very high, as well as to class C (caution) antimicrobials such as florfenicol (45%). A special concern was observed for antimicrobial category B (restrict), like quinolones and colistin, that both presented a high rate of resistance. Colistin use was substantially reduced in Spain, but resistance is still present in weaned pigs, presenting a MIC90 of 4 μg/mL. This suggests that reducing antibiotic use is not enough to eliminate this AMR. Finally, it was found that piglets suffering diarrhea were more commonly carriers of MDR strains than the healthy ones (49.3% vs. 35%, p = 0.031). Therefore, given the high rates of resistance to the most commonly used antimicrobials, especially in diseased pigs, a new non-antibiotic-based approach should be implemented for the management of PWD. Full article
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7 pages, 365 KiB  
Case Report
Effects of Antimicrobial Administration Route on Growth and Antimicrobial Resistance in Weaned Piglets
by Seong-Won Lee, Chang-Min Jung, Kyung-Hyo Do, Wan-Kyu Lee and Kwang-Won Seo
Animals 2023, 13(20), 3264; https://0-doi-org.brum.beds.ac.uk/10.3390/ani13203264 - 19 Oct 2023
Cited by 2 | Viewed by 882
Abstract
This study aimed to determine how the route of antimicrobial administration affected the growth performance of weaned piglets. Additionally, we aimed to investigate potential differences between antimicrobial resistance developed by antimicrobials administered orally through drinking water, and those administered through feed, in weaned [...] Read more.
This study aimed to determine how the route of antimicrobial administration affected the growth performance of weaned piglets. Additionally, we aimed to investigate potential differences between antimicrobial resistance developed by antimicrobials administered orally through drinking water, and those administered through feed, in weaned piglets. The research was undertaken on a farm housing 500 sows and involved 150 weaned piglets at 21 days of age. These piglets were evenly distributed into three groups of equal size: water, feed, and control. Antimicrobials were administered through drinking water and feed in the water and feed groups, respectively, while the control group received no antimicrobial treatment. The observation of piglets continued until they reached 70 days of age. The feed conversion ratio in the water group (1.7 ± 0.78) was significantly higher than in the control (2.4 ± 1.77) and feed (2.7 ± 1.68) groups. Additionally, the route of administration did not affect antimicrobial resistance rates. Based on these results, it can be inferred that administering antimicrobials through drinking water is advantageous for pig farming. Full article
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