{"id":19850,"date":"2026-08-28T14:51:19","date_gmt":"2026-08-28T07:51:19","guid":{"rendered":"https:\/\/www.vietstock.org\/?p=19850"},"modified":"2026-08-26T14:58:37","modified_gmt":"2026-08-26T07:58:37","slug":"enrofloxacin-veterinary-medicine","status":"publish","type":"post","link":"https:\/\/www.vietstock.org\/en\/industry-news\/enrofloxacin-veterinary-medicine\/","title":{"rendered":"Enrofloxacin in Veterinary Medicine: Scope of Use, Antimicrobial Resistance, and Withdrawal Periods"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Enrofloxacin is a fluoroquinolone antimicrobial used in veterinary medicine for certain animal species and specific indications, depending on the authorized product and the regulations of each market. Because fluoroquinolones are highly important to human medicine, enrofloxacin use requires careful management to help limit antimicrobial resistance (AMR) and residues in food.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In Vietnam, enrofloxacin falls within the group of <\/span><b>antimicrobials classified as critically important for human medicine<\/b><span style=\"font-weight: 400;\">. Its use for <\/span><b>treatment or preventive treatment, as defined under Vietnamese veterinary regulations,<\/b><span style=\"font-weight: 400;\"> must comply with veterinary prescription requirements, the authorized scope of the product, and appropriate professional indications.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">These purposes should be distinguished from <\/span><b>the use of antibiotics for disease prevention<\/b><span style=\"font-weight: 400;\">. Under Vietnam\u2019s antimicrobial-management roadmap for livestock production, the permitted period for using this critically important antimicrobial group for disease-prevention purposes in terrestrial animals ended on <\/span><b>31 December 2020<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This article provides professional reference information on the scope of enrofloxacin use, mechanisms of antimicrobial resistance, and principles for managing withdrawal periods so that livestock producers and veterinarians can better understand its responsible use under farm conditions.<\/span><\/p>\n<p><b>Key takeaways<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Enrofloxacin is a fluoroquinolone with activity against many Gram-negative bacteria, some Gram-positive bacteria, and Mycoplasma. Clinical effectiveness depends on the susceptibility of the causative organism and the indication of the specific product.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The authorized use of enrofloxacin varies by animal species, product, and market. Pigs, poultry, and cattle should not be assumed to have the same approved indications.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Incorrect indication, dose, route of administration, or treatment duration may reduce treatment effectiveness and create selection pressure favoring antimicrobial-resistant bacteria.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Withdrawal periods vary by product, animal species, food product, and market. A single withdrawal period should not be applied to every enrofloxacin-containing product.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>In Vietnam, enrofloxacin should not be used for disease-prevention purposes in terrestrial animals under the antimicrobial-management roadmap applicable to critically important antimicrobials. This should be distinguished from preventive treatment as defined under Vietnamese veterinary regulations, which must follow an appropriate veterinary indication and prescription.<\/b><\/li>\n<\/ul>\n<h2><b>What Is Enrofloxacin in Veterinary Medicine?<\/b><\/h2>\n<figure id=\"attachment_19845\" aria-describedby=\"caption-attachment-19845\" style=\"width: 839px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19845\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-624715724-612x612-1.jpg\" alt=\"Veterinarians examining veterinary medicines at a cattle farm, illustrating enrofloxacin use in veterinary medicine\" width=\"849\" height=\"566\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-624715724-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-624715724-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 849px) 100vw, 849px\" \/><figcaption id=\"caption-attachment-19845\" class=\"wp-caption-text\">Enrofloxacin is a fluoroquinolone antimicrobial used in veterinary medicine according to the authorized indication, animal species, and specific product.<\/figcaption><\/figure>\n<h3><b>Enrofloxacin as a Fluoroquinolone: Characteristics and Antibacterial Spectrum<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Enrofloxacin is a synthetic antimicrobial belonging to the fluoroquinolone class and was developed for veterinary use.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Enrofloxacin has activity against many Gram-negative bacteria, some Gram-positive bacteria, and Mycoplasma. Organisms that may appear on certain product labels or in professional veterinary references include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Certain Gram-negative bacteria such as <\/span><i><span style=\"font-weight: 400;\">Escherichia coli<\/span><\/i><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Pasteurella multocida<\/span><\/i><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Mannheimia haemolytica<\/span><\/i><span style=\"font-weight: 400;\">, and other organisms depending on the animal species.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Certain Gram-positive bacteria such as <\/span><i><span style=\"font-weight: 400;\">Staphylococcus<\/span><\/i><span style=\"font-weight: 400;\"> spp.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Certain Mycoplasma species associated with respiratory disease in animals.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">However, this list does not mean that every enrofloxacin product is indicated for all of these organisms. Bacterial susceptibility may vary by strain, geographic area, animal species, and antimicrobial-use history.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Enrofloxacin exhibits concentration-dependent bactericidal activity, but the dose, frequency, and duration of administration should follow the label of the specific product. A single dosing schedule should not be inferred for all enrofloxacin products.<\/span><\/p>\n<h3><b>Mechanism of Action: Inhibition of DNA Gyrase and Topoisomerase IV<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Enrofloxacin acts by inhibiting important bacterial enzymes involved in DNA replication, primarily DNA gyrase and topoisomerase IV.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When the activity of these enzymes is disrupted, bacterial DNA replication and maintenance are impaired, producing a bactericidal effect.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This mechanism also helps explain why mutations affecting the target sites of DNA gyrase or topoisomerase IV can contribute to fluoroquinolone resistance.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In addition to target-site mutations, bacteria may develop other mechanisms that reduce susceptibility to enrofloxacin.<\/span><\/p>\n<h3><b>How Is Veterinary Enrofloxacin Different From Ciprofloxacin Used in Human Medicine?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Enrofloxacin and ciprofloxacin are different active substances with different authorization, indication, and regulatory frameworks. <\/span><b>The two drugs should not be substituted for one another or dose-converted as if they were equivalent.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Enrofloxacin may be partially metabolized to ciprofloxacin in animals, although the extent of this metabolism varies between species.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Fluoroquinolones are an antimicrobial class of major importance to human medicine and are included in antimicrobial-stewardship frameworks intended to reduce AMR risks associated with antimicrobial use across different sectors.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Inappropriate fluoroquinolone use in animals may create selection pressure favoring resistant bacteria. Resistant bacteria or genetic determinants of resistance may spread among animals, the environment, food, and people.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Enrofloxacin management should therefore follow a <\/span><b>One Health<\/b><span style=\"font-weight: 400;\"> approach and principles of responsible antimicrobial use.<\/span><\/p>\n<h2><b>Scope of Enrofloxacin Use by Animal Species and Major Disease Conditions<\/b><\/h2>\n<figure id=\"attachment_19838\" aria-describedby=\"caption-attachment-19838\" style=\"width: 1005px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19838\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-622224092-612x612-1.jpg\" alt=\"Veterinarians monitoring cattle health and veterinary medicine use on a livestock farm\" width=\"1015\" height=\"676\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-622224092-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-622224092-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 1015px) 100vw, 1015px\" \/><figcaption id=\"caption-attachment-19838\" class=\"wp-caption-text\">The authorized use of enrofloxacin varies by animal species, disease condition, specific product, and applicable market regulations.<\/figcaption><\/figure>\n<h3><b>Enrofloxacin in Pigs: Respiratory and Enteric Disease, and Septicemia<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">In pigs, certain enrofloxacin products may be authorized for bacterial infections caused by susceptible organisms.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The examples below represent organisms or disease conditions that may appear on certain labels or in professional references. They do not mean that all enrofloxacin products have the same indications:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Respiratory disease:<\/b><span style=\"font-weight: 400;\"> certain bacterial infections associated with <\/span><i><span style=\"font-weight: 400;\">Pasteurella multocida<\/span><\/i><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Actinobacillus pleuropneumoniae<\/span><\/i><span style=\"font-weight: 400;\">, or other organisms depending on the product.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Enteric disease:<\/b><span style=\"font-weight: 400;\"> certain intestinal infections caused by susceptible bacteria such as <\/span><i><span style=\"font-weight: 400;\">E. coli<\/span><\/i><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Systemic bacterial infections:<\/b><span style=\"font-weight: 400;\"> may be included in specific product indications.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Enrofloxacin should not be selected solely on the basis of a disease name. The veterinarian should consider the diagnosis, likelihood of bacterial infection, treatment history, and culture and <\/span><b>antimicrobial susceptibility testing (AST)<\/b><span style=\"font-weight: 400;\"> when appropriate.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Fluoroquinolones should be reserved for situations in which their use is professionally justified rather than selected routinely out of habit.<\/span><\/p>\n<h3><b>Enrofloxacin in Poultry: Chickens, Ducks, and Common Bacterial Infections<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The authorized scope of enrofloxacin use in poultry varies substantially among countries, markets, and individual products.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some labels or professional references in certain markets may include bacterial infections associated with:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mycoplasma in poultry;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Certain <\/span><i><span style=\"font-weight: 400;\">E. coli<\/span><\/i><span style=\"font-weight: 400;\"> infections;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Certain infections caused by <\/span><i><span style=\"font-weight: 400;\">Pasteurella multocida<\/span><\/i><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">However, this should not be treated as a universal indication list for every country.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some markets have restricted or withdrawn the use of fluoroquinolones in poultry. Before use, it is therefore necessary to confirm that the particular product is authorized for the relevant species, production group, and disease indication in the applicable market.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Certain products may be authorized for administration to a flock through drinking water. This method should only be used when it is permitted for the specific product, indication, and regulatory setting.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Instructions for enrofloxacin use in poultry from one country should not be applied directly to Vietnam or to another export market.<\/span><\/p>\n<h3><b>Enrofloxacin in Cattle and Calves<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">In cattle and calves, enrofloxacin may be authorized for certain bacterial infections depending on the product and the applicable market regulations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some products include indications related to bovine respiratory disease caused by susceptible organisms such as <\/span><i><span style=\"font-weight: 400;\">Mannheimia haemolytica<\/span><\/i><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Pasteurella multocida<\/span><\/i><span style=\"font-weight: 400;\">, or other bacteria specifically listed on the label.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The indication of one product should not be transferred to another enrofloxacin-containing product.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For cattle producing milk for human consumption, first confirm whether the specific product is authorized for use in this production group.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If a product is not approved for lactating dairy cattle producing milk for human consumption, a milk withdrawal period should not be independently inferred. If the product is authorized for such use, the withdrawal period on the label and the requirements of the destination market should be followed.<\/span><\/p>\n<h3><b>When May Enrofloxacin Be Considered, and When Should It Not Be Used?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A veterinarian may consider enrofloxacin when:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The diagnosis is consistent with a bacterial infection likely to involve a susceptible organism.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Culture and antimicrobial susceptibility testing support the choice when testing is feasible and appropriate.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Other suitable antimicrobial options have been considered.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The product is authorized for the relevant species, disease, and production group.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Enrofloxacin should not be used when:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">There is insufficient evidence of bacterial infection or the disease is primarily viral.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The causative organism has been identified as resistant to fluoroquinolones.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The animal species, production group, or indication falls outside the authorized scope of the product.<\/span><\/li>\n<\/ul>\n<p><b>In Vietnam, enrofloxacin should not be used for disease-prevention purposes in terrestrial animals.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">It is important to distinguish <\/span><b>disease prevention<\/b><span style=\"font-weight: 400;\"> from <\/span><b>preventive treatment as defined under Vietnamese veterinary regulations<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Disease prevention<\/b><span style=\"font-weight: 400;\"> refers to antimicrobial administration to animals considered at risk of developing disease but not showing clinical signs, within the scope permitted by applicable regulations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Preventive treatment<\/b><span style=\"font-weight: 400;\">, in the Vietnamese regulatory context, includes antimicrobial use in a group of animals at risk when one or more animals in that group have been diagnosed with or are suspected of having the disease. This group-treatment situation broadly corresponds to what is often described internationally as <\/span><b>metaphylactic treatment<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The Vietnamese regulatory definition also covers certain situations involving the prevention and treatment of infections before and after surgery. For this reason, the Vietnamese term should not be treated as exactly equivalent to metaphylaxis in every context.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The use of enrofloxacin for treatment or preventive treatment should be based on professional veterinary assessment, a veterinary prescription, and current regulations.<\/span><\/p>\n<h2><b>Enrofloxacin Dose and Administration in Practical Farm Use<\/b><\/h2>\n<h3><b>Principles for Dose Calculation According to Body Weight, Species, and Dosage Form<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">An enrofloxacin dose may be expressed in mg\/kg or in another format depending on the specific product.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A single dose formula should not be applied to every product containing enrofloxacin.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">General principles include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use only the dose and dosing unit specified on the product label or veterinary prescription.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Determine animal body weight using an appropriate method when the label requires body-weight-based dosing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not independently increase the dose if the animal does not improve.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If the animal does not respond within the expected period or the disease worsens, reassess the diagnosis and antimicrobial susceptibility rather than independently changing the treatment regimen.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not independently shorten, extend, or otherwise change the treatment duration.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not use the dose of another product or another animal species for the product currently being administered.<\/span><\/li>\n<\/ul>\n<h3><b>Enrofloxacin in Pigs: Injection, Oral Administration, and Drinking-Water Medication<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">For pigs, enrofloxacin products may be available in different dosage forms and routes of administration depending on their authorization.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some products may be authorized for injection, whereas others may be designed for administration through drinking water or another route.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Injectable, oral, or group administration should not be selected solely on the basis of disease severity.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The route of administration should follow the label of the specific product.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Do not independently convert an injectable product for use in drinking water or feed, or vice versa.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Group treatment through drinking water also requires consideration of actual water consumption and appropriate medication distribution in accordance with professional guidance.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Treatment duration varies by product, indication, and response. A fixed number of treatment days should not be used as a universal enrofloxacin regimen.<\/span><\/p>\n<h3><b>Enrofloxacin in Poultry and Cattle: Route of Administration and Recommended Treatment Duration<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">In poultry, enrofloxacin should only be used when the specific product and applicable market regulations permit it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If a product is authorized for administration through drinking water, preparation and administration should follow the product instructions and the flock\u2019s actual water consumption.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The drug concentration should not be independently adjusted according to weather conditions or changes in water intake without following an appropriate calculation method or dosing guidance.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In cattle, only the route approved for the specific product should be used. Intramuscular or subcutaneous injection should not automatically be regarded as the preferred route for every product or disease condition.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some products may be designed for a single administration, whereas others may require repeated treatment. Dosing regimens should not be transferred between products.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Treatment duration should follow the product label and veterinary prescription rather than being extended or shortened according to subjective impressions of recovery.<\/span><\/p>\n<h2><b>Enrofloxacin Resistance: Mechanisms, Causes, and Consequences in Livestock Production<\/b><\/h2>\n<figure id=\"attachment_19840\" aria-describedby=\"caption-attachment-19840\" style=\"width: 932px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19840\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1269126964-612x612-1.jpg\" alt=\"Veterinarian examining a medicine vial, illustrating antimicrobial resistance risks associated with enrofloxacin use in livestock\" width=\"942\" height=\"628\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1269126964-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1269126964-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 942px) 100vw, 942px\" \/><figcaption id=\"caption-attachment-19840\" class=\"wp-caption-text\">Incorrect or inappropriate enrofloxacin use may increase selection pressure favoring antimicrobial-resistant bacteria.<\/figcaption><\/figure>\n<h3><b>How Bacteria Develop Resistance to Enrofloxacin: Mutations, Efflux Pumps, and Reduced Permeability<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Bacteria may develop resistance to enrofloxacin through several mechanisms:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Target-site mutations:<\/b><span style=\"font-weight: 400;\"> changes affecting DNA gyrase or topoisomerase IV can reduce fluoroquinolone activity.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Efflux pumps:<\/b><span style=\"font-weight: 400;\"> some bacteria may increase the activity of systems that remove antimicrobials from the cell.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Reduced cell-envelope permeability:<\/b><span style=\"font-weight: 400;\"> changes in the bacterial membrane or transport proteins may reduce the amount of drug entering the bacterial cell.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Resistance mechanisms carried on transferable genetic elements:<\/b><span style=\"font-weight: 400;\"> certain quinolone-resistance mechanisms may be associated with plasmids and may occur alongside other antimicrobial-resistance mechanisms.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Fluoroquinolone resistance may lead to reduced susceptibility to multiple agents within the same antimicrobial class and may occur together with resistance to other antimicrobial classes.<\/span><\/p>\n<h3><b>Practices That Increase Resistance Risk and Principles of Responsible Use<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Practices that may increase antimicrobial selection pressure include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inadequate drug exposure caused by incorrect dose, route, or preparation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Using enrofloxacin for diseases that are primarily viral or where there is insufficient evidence of bacterial infection.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Using enrofloxacin for disease-prevention purposes in terrestrial animals.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Independently changing treatment duration, frequency, or method of administration.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Repeatedly using enrofloxacin without investigating the cause of treatment failure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Selecting fluoroquinolones routinely rather than evaluating other appropriate options.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">To support responsible enrofloxacin use:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use it only when the diagnosis is appropriate and a veterinarian determines that antimicrobial therapy is warranted.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Prioritize culture and antimicrobial susceptibility testing when appropriate, particularly in recurrent cases, treatment failures, or herds and flocks with substantial antimicrobial-use histories.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Follow the correct product, dose, route, frequency, and treatment duration.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not treat enrofloxacin as a default first-line choice.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Maintain complete medication-use records.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Combine vaccination, biosecurity, stocking-density management, nutrition, and hygiene to reduce the need for antimicrobials.<\/span><\/li>\n<\/ul>\n<h3><b>Consequences of Resistance: Treatment Failure, Higher Costs, and Food-Safety Risks<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">When bacteria become less susceptible or resistant to enrofloxacin, potential farm-level consequences include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Poor treatment response:<\/b><span style=\"font-weight: 400;\"> the disease may fail to respond as expected. The diagnosis should then be reassessed, appropriate samples collected when indicated, and a new treatment approach considered rather than automatically combining or switching antibiotics.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Higher costs:<\/b><span style=\"font-weight: 400;\"> additional diagnostic testing, supportive care, alternative medicines, and a longer disease course may increase costs.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Greater herd or flock losses:<\/b><span style=\"font-weight: 400;\"> severe bacterial infections may become more difficult to control when effective treatment options become limited.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Food-safety and public-health risks:<\/b><span style=\"font-weight: 400;\"> antimicrobial-resistant bacteria from animals may enter the food chain and represent one potential route of human exposure.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">From a <\/span><b>One Health<\/b><span style=\"font-weight: 400;\"> perspective, preserving the effectiveness of fluoroquinolones is important to both veterinary and human medicine.<\/span><\/p>\n<h2><b>Enrofloxacin Withdrawal Periods and Control of Antimicrobial Residues<\/b><\/h2>\n<h3><b>What Is a Withdrawal Period, and Why Is It Important for Enrofloxacin?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A <\/span><b>withdrawal period<\/b><span style=\"font-weight: 400;\"> is the required period after the final administration of a veterinary medicine before the treated animal or its products may enter the food supply chain, helping ensure that residues do not exceed limits permitted by the relevant regulatory authority.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A <\/span><b>maximum residue limit (MRL)<\/b><span style=\"font-weight: 400;\"> is a regulatory limit for residues of an active substance or designated marker residue in food.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MRLs and withdrawal periods are related concepts, but they are not the same.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The marker residue used for enrofloxacin and the applicable MRL may vary according to the regulatory system of each market. A single MRL or withdrawal period should therefore not be applied across all countries.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Withdrawal periods are particularly important because:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Enrofloxacin and its metabolites may remain in tissues or animal-derived foods after treatment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Residue levels vary according to product, animal species, route of administration, and treatment regimen.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Withdrawal periods cannot be independently inferred from the active ingredient\u2019s elimination half-life.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Residues above regulatory limits may make products non-compliant with food-safety requirements and subject to regulatory action in the relevant market.<\/span><\/li>\n<\/ul>\n<h3><b>Withdrawal Periods for Pork, Poultry Meat, and Beef<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The specific withdrawal period depends on the authorized product, route, indication, species, and regulatory requirements of the relevant market.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Do not apply the withdrawal period of one product to another product, even when both contain enrofloxacin.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The table below presents management principles only and does not provide reference numbers of days:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Animal species<\/b><\/td>\n<td><b>Food product<\/b><\/td>\n<td><b>Withdrawal period<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Pigs<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Meat<\/span><\/td>\n<td><span style=\"font-weight: 400;\">According to the specific product label and applicable market regulations<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Poultry<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Meat<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Only when the product is authorized for the relevant production group; follow the label and applicable market regulations<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Cattle<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Meat<\/span><\/td>\n<td><span style=\"font-weight: 400;\">According to the specific product label and applicable market regulations<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Dairy cattle<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Milk<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Only when the product is approved for animals producing milk for human consumption; follow the specific label requirements<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">Do not independently infer a withdrawal period from the dose, elimination half-life, route of administration, or withdrawal period of another product.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If the medicine has been used differently from the approved regimen, do not simply apply the original label withdrawal period. Veterinary assessment and the applicable residue-control and legal requirements of the relevant market are needed before animals or products are marketed.<\/span><\/p>\n<h3><b>Withdrawal Periods for Milk and Eggs<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Milk and eggs require particular attention to residue control.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Cow\u2019s milk:<\/b><span style=\"font-weight: 400;\"> before using enrofloxacin in cattle producing milk for human consumption, confirm whether the specific product is authorized for this production group. If it is not authorized, do not independently assign a milk withdrawal period. If it is authorized, follow the withdrawal period stated on the product label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Chicken eggs:<\/b><span style=\"font-weight: 400;\"> authorization of enrofloxacin for laying hens varies by market, and many markets impose strict restrictions. The drug should not be used in commercial laying hens when the specific product is not approved for this production group.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Farms supplying export markets should also check the requirements of the destination market because regulations governing fluoroquinolones and residues may differ from domestic requirements.<\/span><\/p>\n<h3><b>Determining Marketing Dates and Maintaining Medication Records on Farms<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Effective withdrawal-period management requires a clear record-keeping system:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Maintain complete records:<\/b><span style=\"font-weight: 400;\"> record the start date, product name, batch number when relevant, route of administration, treated animal or group, and date of the final administration.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Determine when the withdrawal period is completed:<\/b><span style=\"font-weight: 400;\"> when the product has been used according to the label, calculate this directly from the withdrawal period stated on that specific product.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Clearly identify affected animals:<\/b><span style=\"font-weight: 400;\"> use ear tags, group codes, or management systems to distinguish animals still within the withdrawal period.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Do not market animals or products early:<\/b><span style=\"font-weight: 400;\"> clinical recovery does not alter the required withdrawal period.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">If there has been any deviation from the approved regimen, do not simply add the number of label withdrawal days to the date of the last treatment and assume the product is safe for sale. Veterinary assessment and compliance with the residue-control requirements of the applicable market are needed before marketing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Complete records also support traceability and residue control throughout the food chain.<\/span><\/p>\n<h2><b>Frequently Asked Questions About Enrofloxacin in Veterinary Medicine<\/b><\/h2>\n<figure id=\"attachment_19842\" aria-describedby=\"caption-attachment-19842\" style=\"width: 871px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19842\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2260957702-612x612-1.jpg\" alt=\"Stethoscope and FAQ letters illustrating frequently asked questions about enrofloxacin in veterinary medicine\" width=\"881\" height=\"587\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2260957702-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2260957702-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 881px) 100vw, 881px\" \/><figcaption id=\"caption-attachment-19842\" class=\"wp-caption-text\">Common questions about enrofloxacin use, disease prevention, antimicrobial resistance, and responsible use in livestock production.<\/figcaption><\/figure>\n<h3><b>Can Enrofloxacin Be Used to Prevent Disease in a Herd or Flock?<\/b><\/h3>\n<p><b>Enrofloxacin should not be used for disease-prevention purposes in terrestrial animals in Vietnam.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Enrofloxacin belongs to a group of antimicrobials classified as critically important for human medicine, and the permitted period for use of this group for disease-prevention purposes ended on <\/span><b>31 December 2020<\/b><span style=\"font-weight: 400;\"> under Vietnam\u2019s antimicrobial-management roadmap for livestock production.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This should be distinguished from <\/span><b>preventive treatment as defined under Vietnamese veterinary regulations<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">That regulatory concept may include treatment of an at-risk group when one or more animals in the group have been diagnosed with or are suspected of having the disease\u2014a situation broadly corresponding to metaphylactic treatment\u2014as well as certain circumstances involving prevention and treatment of infections before and after surgery.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Such use should follow a veterinary prescription, professional assessment, and current regulations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To reduce reliance on antimicrobials, farms should prioritize appropriate vaccination, biosecurity, housing hygiene, nutrition, and herd or flock health management.<\/span><\/p>\n<h3><b>Can Repeated Enrofloxacin Use Cause Antimicrobial Resistance, and How Can Resistance Be Recognized?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Repeated, inappropriate, or incorrectly administered enrofloxacin use may increase selection pressure favoring resistant bacteria.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, failure to improve after several days of treatment does not necessarily mean that the bacteria are resistant to enrofloxacin.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Poor treatment response may be related to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">An incorrect diagnosis;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Viral disease or an organism that is not susceptible to enrofloxacin;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Co-infection;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Route of administration, medication method, or feed\/water intake resulting in lower-than-expected drug exposure;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Disease-related lesions that may already be too severe;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduced bacterial susceptibility or antimicrobial resistance.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">When resistance is suspected, a veterinarian should reassess the case and consider culture and antimicrobial susceptibility testing when appropriate.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u201cRapid recurrence\u201d or \u201cno recovery after two or three days\u201d should not be used as standalone criteria for concluding that enrofloxacin resistance is present.<\/span><\/p>\n<h3><b>What Adverse Effects of Enrofloxacin Should Livestock Producers Be Aware Of?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Adverse effects, contraindications, and warnings associated with enrofloxacin vary by species, age, product, and route of administration.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Potential reactions listed on individual product labels may include, for example:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Injection-site reactions with certain injectable formulations;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gastrointestinal disturbances in some cases;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Species-, age-, or growth-stage-specific warnings.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A universal adverse-effect list should not be applied to every enrofloxacin product.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Livestock producers should read the contraindications and warnings on the specific product label, monitor animals during treatment, and contact a veterinarian if abnormal reactions occur.<\/span><\/p>\n<h3><b>Is a Veterinary Prescription Required for Enrofloxacin Use on Large Livestock Farms?<\/b><\/h3>\n<p><b>Yes.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Under current veterinary prescription principles in Vietnam, veterinary medicines require a prescription when used unless they fall within categories specifically exempted from prescription requirements.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Enrofloxacin is not a medicine that should be used freely without veterinary prescribing oversight. Its use for treatment or preventive treatment should be based on diagnosis or professional assessment, use an authorized product, and comply with veterinary prescription requirements.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The veterinarian should assess whether antimicrobial treatment is necessary and determine the appropriate product, route of administration, treatment duration, and withdrawal period.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The farm should also maintain medication records to support treatment monitoring, withdrawal-period control, and traceability.<\/span><\/p>\n<p><b>Note:<\/b><span style=\"font-weight: 400;\"> This article provides general reference information about enrofloxacin in veterinary medicine and does not replace veterinary diagnosis, prescription, or treatment decisions. Product selection, indication, dose, route of administration, treatment duration, and withdrawal period should follow the specific product label, applicable regulations, and the actual condition of the animal.<\/span><\/p>\n<h2><b>Antimicrobial Use and Veterinary Drug Residue Control at VIETSTOCK 2026<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Enrofloxacin has a defined role in the treatment of certain bacterial infections in pigs, poultry, and cattle, but it is also an antimicrobial that requires careful management because of concerns related to antimicrobial resistance, residues in meat, milk, and eggs, and regulatory requirements in destination markets. For large livestock operations, using the correct indication, dose, treatment duration, and withdrawal period affects not only treatment outcomes but also food safety and <\/span><b>product reputation<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><b>VIETSTOCK 2026<\/b><span style=\"font-weight: 400;\"> provides an industry networking platform where livestock producers, veterinarians, veterinary pharmaceutical companies, animal-source food producers, and technology providers can explore solutions that support more responsible antimicrobial use. The event is expected to bring together more than <\/span><b>300 brands<\/b><span style=\"font-weight: 400;\">, over <\/span><b>10,000 sqm of exhibition area<\/b><span style=\"font-weight: 400;\">, and <\/span><b>13,000 trade visitors<\/b><span style=\"font-weight: 400;\"> from more than <\/span><b>40 countries and territories<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">At the event, attendees can explore and connect with solutions that support <\/span><b>antibiotic management, residue control, and improved food safety<\/b><span style=\"font-weight: 400;\">, including:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Veterinary medicines and product-use information:<\/b><span style=\"font-weight: 400;\"> learn about products, indications, routes of administration, doses, and species-specific safety considerations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Antimicrobial-resistance control:<\/b><span style=\"font-weight: 400;\"> discuss the role of diagnosis, antimicrobial susceptibility testing, treatment records, and appropriate antimicrobial selection.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Withdrawal-period management:<\/b><span style=\"font-weight: 400;\"> explore solutions for tracking the date of the final dose, identifying or grouping animals currently under treatment, and reducing the risk of premature marketing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Food safety and traceability:<\/b><span style=\"font-weight: 400;\"> learn about technologies for herd and flock data management, veterinary medication records, and information supporting residue control.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Disease prevention without overreliance on antibiotics:<\/b><span style=\"font-weight: 400;\"> connect with solutions involving vaccination, nutrition, biosecurity, and <\/span><b>livestock housing and environmental management<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Through the <\/span><b>VIETSTOCK 2026 Livestock Roadshows in Bac Ninh, Dong Thap and Ho Chi Minh City<\/b><span style=\"font-weight: 400;\">, topics such as herd health management, disease prevention and control, and improving livestock production efficiency can also help farmers better understand the practical connection between disease prevention, responsible medicine use, and food safety risk control in livestock production.<\/span><\/p>\n<p><b>Date:<\/b><span style=\"font-weight: 400;\"> 21\u201323 October 2026<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Venue:<\/b><span style=\"font-weight: 400;\"> Saigon Exhibition and Convention Center (SECC), 799 Nguyen Van Linh Street, Tan My Ward, Ho Chi Minh City, Vietnam<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Event website:<\/b><a href=\"https:\/\/www.vietstock.org\/en\/\"> <span style=\"font-weight: 400;\">https:\/\/www.vietstock.org\/en\/<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\ud83d\udc49 <\/span><a href=\"https:\/\/www.vietstock.org\/en\/online-registration-2\/\"><b>Visitor registration for VIETSTOCK 2026<\/b><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\ud83d\udc49 <\/span><a href=\"https:\/\/www.vietstock.org\/en\/event-features\/vietstock-2026-livestock-roadshows-bringing-industry-knowledge-to-key-livestock-regions\/\"><b>Learn more about the VIETSTOCK 2026 Livestock Roadshows<\/b><\/a><\/p>\n<p><b>Contact information:<\/b><\/p>\n<p><b>Exhibiting:<\/b><span style=\"font-weight: 400;\"> Ms. Sophie Nguyen \u2013 Sophie.nguyen@informa.com<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Visitor Support:<\/b><span style=\"font-weight: 400;\"> Ms. Phuong \u2013 Phuong.C@informa.com<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Marcom Support:<\/b><span style=\"font-weight: 400;\"> Ms. Anita Pham \u2013 Anita.pham@informa.com<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Enrofloxacin is a fluoroquinolone antimicrobial used in veterinary medicine for specific species and indications. Learn about its authorized use, antimicrobial resistance risks, responsible administration and withdrawal-period management in livestock production.<\/p>\n","protected":false},"author":3,"featured_media":19851,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Enrofloxacin in Veterinary Medicine: Use, Resistance &amp; Withdrawal<\/title>\n<meta name=\"description\" content=\"Learn about enrofloxacin in veterinary medicine, including its scope of use, antimicrobial resistance risks, responsible use and withdrawal periods.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vietstock.org\/en\/tin-nganh\/enrofloxacin-thuoc-thu-y\/\" \/>\n<meta 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