MILK & DAIRY BEEF DRUG RESIDUE PREVENTION REFERENCE MANUAL 2020 National Milk Producers Federation (NMPF) does not endorse any of the veterinary drugs or tests identified on the lists in this manual. The lists of veterinary drugs and tests are provided only to inform producers and veterinarians what products may be available, and the producer and veterinarian are responsible for determining whether to use any of the veterinary drugs or tests. All information regarding the veterinary drugs or tests was obtained from the products’ manufacturers or sponsors, and NMPF has made no further attempt to validate or corroborate any of that information. NMPF urges producers to consult with their veterinarians before using any veterinary drug or test, including any of the products identi- fied on the lists in this manual. In the event that there might be any injury, damage, loss or penalty that results from the use of these products, neither the manufacturer of the product or the producer using the product shall be responsible. NMPF is not responsible for, and shall have no liability for, any injury, damage, loss or penalty. © 2020 National Milk Producers Federation This manual is not a legal document and is intended for educational purposes only. Dairy farmers are individually responsible for determining and complying with all requirements of local, state and federal laws and regulations regarding animal care. 2 Table of Contents Chapter 1: Introduction 1 Chapter 2: Residue Prevention Best Practices 3 Chapter 3: Record Keeping and Herd Health Protocols 7 Chapter 4: Drug Administration 10 Chapter 5: Culling of Animals 14 Chapter 6: Residue Testing 17 Chapter 7: Drug Classes 22 Chapter 8: Approved Drugs and Screening Tests 27 Glossary 66 Contact Information 68 3 4 Foreword The goal of our nation’s dairy farmers is to produce the best tasting and most wholesome milk possible. Our consumers demand the best from us and our goal, through continuous improvement, is to meet their needs and exceed their expectations every day. Day in and day out, our dairy farmers provide the best in animal husbandry. As part of continuous improvement, we evaluate our best management practices and disease prevention protocols to keep our animals healthy and comfortable. There are occasions when animals may get sick and need anti- microbial therapy to overcome a specific disease challenge. As dairy producers, we strategically and prudently use antimicrobial therapies to help an individual animal that has been threatened with a disease. We take this responsibility of prudent antimicrobial use seriously and take many precautions with our antibiotic-treated animals to ensure that their milk or meat does not enter the food supply. The avoidance of milk and meat residues takes an on-farm team effort that begins with the VCPR – the Veterinarian-Client-Patient Relationship. Dairy farm owners, managers and herdsman work with their veterinarians to develop treatment protocols that ensure that antimicrobials are used correctly. Once a decision is made to use antimicrobials, protocols are in place to guide employees on the safe way to handle the animal to prevent an inadvertent milk or meat residue from occurring. Proper identification of treated animals and accurate recording of drug use are essential to prevent residues. For 30 years, each revision of the Milk & Dairy Beef Drug Residue Prevention Reference Manual has served as the U.S. dairy industry’s commitment to antimicrobial stewardship – the prudent and responsible use of antibiotics and other drugs in dairy animals. This year’s revised manual is a quick resource to review those drugs approved for dairy animals and can also be used as an educational tool and resource for farm managers as they develop on-farm best management practices. I encourage all dairy farmers to sit down with their veterinarians and employees to review this manual as you will find the information useful, practical and easily applied to your individual farms. Sincerely, Karen Jordan, DVM Dairy Producer Chair NMPF Animal Health and Well-Being Committee 5 6 01 Introduction The U.S. dairy industry is committed to producing the highest quality, safe, abundant and affordable milk and dairy beef. Healthy animals help make for safe food, and disease prevention is the key to keeping cows healthy. When dairy animals get sick and treatment is necessary, producers and veterinarians utilize antibiotics and other drugs prudently. Antimicrobials must be used appropriately under veterinary guidance to prevent residues from occurring in milk and dairy beef. The marketing of milk or dairy beef with drug residues, even unintentionally, is illegal and can result in financial and criminal penalties. Antimicrobial Stewardship Antimicrobial stewardship goes beyond an individual dairy farmer’s actions. It extends across all livestock production, and includes use of antimicrobials in companion animals and humans, even extending to some types of crop production systems. Misuse and overuse of antimicrobials is one of the world’s most pressing public health concerns. Infectious organisms adapt to antimicrobials designed to kill them, mak- ing the drugs less effective. The Food and Drug Administration Center for Veterinary Medicine (FDA CVM) has committed to antimicrobial stewardship for use in animals through principles and key initiatives. According to the American Veterinary Medical Association (AVMA): "Antimicrobial stewardship cannot be ranked by intent of use for prevention, control or treatment. Strategic uses of antimicrobials for the pur- poses of prevention, control and treatment of disease may each meet the requirements of antimicrobial stewardship. Stewardship is better defined by decisions that influence the need for antimicrobial therapy in the first place and that maintain the effectiveness of antimicrobials when they are used." Factors include the following: • Systems of husbandry that reduce the risk of disease • Careful diagnostic evaluation • Good decision-making to use or not use antimicrobials • Prudent choice of drugs, dosage and duration • Records indicating appropriate follow-up and re-evaluation Chapter 1: Introduction 1 AVMA Definitions of Antimicrobial Use for Treatment, Control and Prevention AVMA believes antimicrobial stewardship can be achieved whether the intent is prevention, control or treatment, and attempts to prioritize antimicrobial stewardship by therapeutic purpose are misguided. Stewardship is better demonstrated by the clinical rationale for antimicrobial therapy. We provide the following definitions for treatment, prevention and control in the context of antimicrobial use in individual animals or populations of animals. Antimicrobial prevention of disease (Synonym: prophylaxis) 1. Prevention is the administration of an antimicrobial to an individual animal to mitigate the risk for acquiring disease or infection that is anticipated based on history, clinical judgment or epidemiological knowledge. 2. On a population basis, prevention is the administration of an antimicrobial to a group of animals, none of which have evidence of disease or infection, when transmission of existing undiagnosed infections, or the introduction of pathogens, is anticipated based on history, clinical judgment or epidemiological knowledge. Antimicrobial control of disease (Synonym: metaphylaxis) 1. Control is the administration of an antimicrobial to an individual animal with a subclinical infection to reduce the risk of the infection becoming clinically apparent, spreading to other tissues or organs or being transmitted to other individuals. 2. On a population basis, control is the use of antimicrobials to reduce the incidence of infectious disease in a group of animals that already has some individuals with evidence of infectious disease or evidence of infection. Antimicrobial treatment of disease: 1. Treatment is the administration of an antimicrobial as a remedy for an individual animal with evidence of infectious disease. 2. On a population basis, treatment is the administration of an antimicrobial to those animals within the group with evidence of infectious disease. 2 Chapter 1: Introduction 02 Residue Prevention Best Practices Causes of Antibiotic Residues • Use of medicated milk replacers in calves that in Milk and Meat may be sold for human consumption Drug residues can be avoided with implementation • The use of prohibited drugs or aminoglycosides of a well-planned drug use program. Reasons given (e.g. , gentamicin) in cattle. The USDA and FDA are for milk and meat residues result from many on- still detecting gentamicin residues in cattle. farm situations. These include, but are not limited • The use of compounded medications in cattle, to, the following: including the intentional use of multiple drugs in a single animal, including both simultaneous • Not working under a valid Veterinarian-Client- and consecutive dosing. Animal liver and kidney Patient Relationship function, particularly in unhealthy animals where • Failure to keep accurate and adequate drug use drug metabolism may be compromised, may records not be able to keep up with multiple circulating • Not following the manufacturer or veterinarian drugs potentially resulting in poorly defined and prescribed label directions for correct treatment significantly extended drug withholding times. for the appropriate withdrawal time • The practice of spraying hairy heel warts with • Not following veterinarian’s recommendation antibiotic sprays in the milking parlor during when using any