Livestock Biosecurity Requirements in Delaware Every Producer Should Know

Delaware may be the nation’s second-smallest state, but its agricultural footprint punches well above its weight — and so do the disease risks that come with dense livestock and poultry populations packed into a compact geography. A single biosecurity lapse on one farm can ripple across the Delmarva Peninsula within days, threatening the livelihoods of neighbors who did everything right.

If you raise cattle, swine, poultry, sheep, goats, horses, or any other livestock in Delaware, understanding your biosecurity obligations is not optional. This guide walks you through every major requirement — from premises registration and isolation rules to visitor sanitation, wildlife control, and dead animal disposal — so you can keep your operation compliant and your animals healthy.

What Is Livestock Biosecurity and Why It Matters in Delaware

Biosecurity is defined as a system of management practices that prevent or greatly reduce the risk of introducing new diseases to a farm or stable. In practice, that means controlling what comes onto your property — animals, people, vehicles, equipment, and even air — and what leaves it.

Delaware’s geography makes biosecurity especially urgent. The state has over 700 producers who raise commercial broiler chickens and over 1,000 small backyard poultry owners. That density means pathogens can travel quickly between operations. Even a small farm with just a few chickens could become infected and spread a virus to other farms in Delaware.

The stakes extend beyond poultry. The HPAI H5N1 virus is shed in milk at high concentrations, meaning anything that contacts unpasteurized or spilled milk — humans, other animals, vehicles, and objects — may spread the virus. Genetic and epidemiological data indicate instances of spread from dairy to dairy and from dairy premises to poultry premises. That cross-species transmission risk is exactly why Delaware’s biosecurity framework covers all livestock classes, not just commercial poultry.

When serious, highly contagious diseases are diagnosed, the State Veterinarian, through the authority of the Secretary of Agriculture, may quarantine the animal, herd, or flock to prevent the spread of disease to other premises. Proactive biosecurity is far less disruptive than a state-imposed quarantine.

Premises Registration and Identification Requirements in Delaware

One of the most foundational biosecurity tools Delaware uses is premises registration — a system that lets state officials rapidly notify every producer in the event of a disease threat. If you keep livestock or poultry in Delaware, registration is not voluntary.

In order to quickly notify all poultry producers in the state of a potential or existing disease threat, DDA requires the registration of all premises in Delaware where live poultry is kept. This allows information regarding disease incidents to be sent in a timely manner to all poultry producers.

The Department of Agriculture requires registration of all flocks — even one bird — for disease tracking. This means even backyard hobbyists with a single hen must register their premises with DDA. The registration form asks for the general purpose for which birds are kept (hobby, show, own consumption, commercial, or eventual sale), and completed forms must be returned to DDA.

For cattle and other livestock, premises registration aligns with the federal Animal Disease Traceability (ADT) program. A premises identification number (PIN) or location identifier (LID) is a unique code permanently assigned to a physical location and is required to purchase official animal identification tags. Each state administers PIN or LID registration. Delaware participates in this federal cooperative as an ADT cooperator, meaning your Delaware PIN ties directly into the national traceability infrastructure.

• Register all poultry premises with DDA, regardless of flock size
• Obtain a premises identification number (PIN) for cattle and other covered livestock through the USDA ADT system
• Keep registration information current — changes in species, ownership, or operation type should be reported to DDA promptly
• Livestock and poultry dealers operating in Delaware must hold a valid DDA livestock/poultry dealer’s license and comply with all provisions of that license

You can learn more about how premises registration intersects with broader animal identification requirements through the USDA APHIS Animal Disease Traceability program. If you raise livestock in neighboring states, also review livestock disease reporting requirements in Florida and livestock disease reporting requirements in California for comparison.

Biosecurity Plan Requirements in Delaware

Delaware does not mandate a single universal written biosecurity plan for all livestock producers, but the DDA strongly advises every operation to develop, implement, and regularly update one — and for swine producers in particular, written plan development is explicitly encouraged as an industry standard.

Write a farm biosecurity plan — use it, evaluate it, and update it. A biosecurity plan is not something you write and stick on a shelf. It is important to take the time to walk through your farm to find where the pitfalls are where disease could enter and be a risk to your herd.

Biosecurity plans do not have to be complex to work. The best plans are ones that are practical and can be put in place on your farm every day. They should be written to address your risks and disease management goals.

A sound biosecurity plan for a Delaware livestock operation should address the following areas:

1. Disease entry prevention — how animals, people, vehicles, and equipment access your property
2. Animal health monitoring — daily observation routines and documentation of illness signs
3. Isolation protocols — procedures for new arrivals and returning animals
4. Cleaning and disinfection schedules — for housing, equipment, and vehicles
5. Emergency contacts — your accredited veterinarian, DDA (302-698-4500), and USDA APHIS contacts
6. Mortality management — approved methods for disposing of dead animals
7. Wildlife and pest control measures — strategies for excluding rodents, wild birds, and other vectors

A good biosecurity program should address the prevention of disease entry and spread on a farm, stable, or home. Livestock and horse owners should contact their regular veterinarian to discuss what appropriate measures should be implemented on their specific operation.

Animal Isolation and Movement Control Requirements in Delaware

Controlling how and when animals move onto, off of, and around your property is one of the most effective disease-prevention tools available. Delaware’s DDA has issued clear guidance on isolation and movement control for multiple livestock species.

Isolation of New and Returning Animals

The Delaware Department of Agriculture reminds all horse, livestock, and poultry owners to practice good biosecurity and isolate new animals from the general population for 30 days to observe for signs of illness. This 30-day isolation rule applies whether you are purchasing new stock, bringing back animals from a show, or receiving animals on loan.

For swine specifically, DDA guidance is explicit: any pig that leaves the farm, is new to the farm, or is borrowed from another farm needs to be isolated for 30 days to prevent the introduction of diseases and parasites. This includes animals that have gone to the veterinary hospital, a livestock show, a petting zoo, or were on loan for breeding. During the isolation period, keep the new pigs from sharing the following with your herd: airspace, fence line contact, drainage areas, equipment, coveralls, and boots.

For poultry returning from shows or exhibitions, Delaware regulations require that upon returning to Delaware, birds shall be kept separate from all other birds in the flock for a period of 30 days.

Equipment Used During Isolation

Do not cross-use shovels, feed buckets, brushes, or other equipment between the isolated animal and other livestock. Keep dedicated clothing in the isolation area. These measures prevent pathogens from traveling from the quarantine space to the rest of your herd or flock on contaminated tools or apparel.

Movement Logging and Control Orders

Limit, monitor, and record any movement of people, vehicles, or animals on or off your farm using a log book. This log becomes critical evidence during a disease investigation and helps you identify the source of any illness that does appear.

Delaware has also issued formal control orders restricting livestock movement during disease events. For example, as of April 10, 2025, Delaware issued its Fourth Modification to a Control Order Restricting Movement of Dairy Cattle into Delaware due to the Highly Pathogenic Avian Influenza (H5N1) in Dairy Cattle Event. Always check DDA’s website for active control orders before moving cattle or other covered livestock into the state.

For producers who transport animals across state lines, understanding trailer requirements is equally important. Review livestock trailer requirements in Pennsylvania — Delaware’s largest neighboring state — as well as livestock trailer requirements in Nevada if you ship animals long-distance.

Visitor, Vehicle, and Equipment Sanitation Rules in Delaware

People, vehicles, and equipment are among the most common disease vectors on livestock operations. Delaware’s DDA guidance across multiple livestock species consistently emphasizes restricting access, logging visits, and enforcing sanitation protocols for anyone who enters your premises.

Visitor Access and Logging

Delaware farms are encouraged to practice strict biosecurity. This includes keeping visitors to a minimum and only allowing those caring for your herd to come in contact with the animals. When visits cannot be avoided, make sure someone is always with the visitor.

Log every visit. Record the visitor’s name, the date, their origin (especially if they have been on other livestock premises), and the areas of your farm they accessed. This visitor log is a critical tool during any disease trace-back investigation.

Personal Protective Equipment and Clothing

Contaminated clothing and footwear are documented pathways for spreading diseases like Infectious Laryngotracheitis (ILT) and Infectious Coryza between Delaware poultry farms. Work crews and other visitors who do not change clothing between poultry farms are known to spread Coryza from infected farms to clean farms.

DDA’s guidance for poultry producers includes:

• If a visitor must engage with your chickens, have them wear disposable coveralls, boots, and gloves.
• Make sure you have a dedicated pair of farm boots and coveralls that are worn on your farm and which are not worn off the farm.
• Be sure that all visitors follow your contracting company’s biosecurity rules, especially those requirements for entry into the poultry house, such as proper foot-pan usage or personal protective equipment (PPE).

For swine operations, the same logic applies: when you visit livestock shows, sales, open houses, other farms, slaughter facilities, or anywhere pigs are present, take extra precautions to make sure you do not carry disease home to your herd. You should keep shoes and clothing that you wear to shows and sales separate from your farm clothing.

Vehicle and Equipment Sanitation

Vehicles — including feed trucks, manure haulers, and service vehicles — can carry pathogens on tires, undercarriages, and wheel wells. Delaware’s poultry regulations require that all crates and coops used to transport birds must be made of material that can be completely cleaned and disinfected before returning to Delaware.

The EPA’s Biosecurity Procedures for Visits to Livestock and Poultry Facilities provides additional guidance on minimizing disease transmission risks during facility visits, and is a useful reference for establishing your own visitor protocols. You may also find it helpful to review how brand inspection requirements in Washington approach animal movement documentation.

Wildlife and Pest Control Obligations in Delaware

Wild birds, rodents, insects, and other wildlife are significant vectors for livestock disease in Delaware. The state’s coastal geography and position along the Atlantic Flyway mean that migratory waterfowl — a primary reservoir for HPAI — are a recurring seasonal threat.

Wild Bird Pressure on Delaware Farms

Poultry producers and backyard flock owners must realize that what occurs in wild birds does impact the health of their birds. Birds that are not sick or are strong enough to fly will take flight, moving inland to open space, including farm fields, to forage. At that time, the virus can be introduced to poultry farms and areas where backyard flocks are commingling with wildlife or are not under cover, protecting them from infected wild bird droppings.

To reduce wild bird exposure, Delaware producers should:

• House poultry in fully enclosed structures whenever possible, or use covered runs to prevent contact with wild bird droppings
• Remove standing water sources that attract waterfowl and shorebirds
• Secure feed storage to eliminate attractants for wild birds and rodents
• Inspect and repair gaps in poultry house walls, roofs, and ventilation screens regularly

USDA APHIS has published three specific wildlife management resources that Delaware’s DDA references directly on its cattle biosecurity page: Improving Biosecurity with Wildlife Management Practices: Preventing Access to Barns and Other Facilities, Reducing Water Access, and Protecting Food Resources. These are available through USDA APHIS and are highly recommended for Delaware producers.

Rodent and Pest Control

Keep wildlife and insects under control. Dispose of unused, broken equipment; unusable food and water containers; and trash that can serve as reservoirs for mosquitoes and rodents that can transmit disease. Keep wildlife out of pig areas to reduce transmission of zoonotic diseases.

For swine and cattle producers, a structured pest control program should include:

• Routine rodent baiting and trapping around feed storage and animal housing
• Elimination of debris piles, overgrown vegetation, and standing water near barns
• Fly control programs, particularly during warm months, to reduce the spread of intestinal parasites
• Regular manure removal, which helps limit the spread of intestinal parasites and disease, and reduces flies that can spread disease.

Dead wild birds found on or near your Delaware farm should be reported. In Delaware, call DNREC at 302-735-3600 (Ext. 2) or use the Wildlife Mortality Survey form to report dead wildlife to DNREC. Do not handle dead wild birds with bare hands — wear gloves and use double-bagged disposal.

Dead Animal Disposal Requirements in Delaware

Proper and timely disposal of livestock mortalities is both a biosecurity obligation and a regulatory requirement in Delaware. Carcasses left exposed attract scavengers, harbor pathogens, and can spread disease to neighboring farms. Carcasses of dead poultry that are not properly composted can spread Coryza if infected carcasses are carried from farm to farm by animals such as raccoons, foxes, or feral cats.

Approved Disposal Methods

Delaware producers are generally expected to use one or more of the following approved disposal methods for routine livestock mortalities. You should contact DDA or DNREC to confirm current requirements for your specific operation type and animal class, as regulations can vary by species and scale:

• Composting — On-farm composting is widely used in Delaware, particularly for poultry. Composting must follow proper protocols to achieve the temperatures necessary to inactivate pathogens.
• Rendering — Licensed rendering services can collect and process carcasses. Rendering is an approved method for larger livestock.
• Burial — Burial may be permitted under certain conditions, but it is important to evaluate the proposed disposal area to ensure it meets regulations for disposal activities and potential impacts to sensitive areas such as streams, ponds, and wetlands. Delaware’s high water table in many areas limits burial as a practical option.
• Incineration — Permitted incinerators may be used; check with DNREC for air quality permit requirements.

Sheep and Goat Scrapie Disposal Program

Delaware offers a specific program for sheep and goat producers that combines mortality disposal with disease surveillance. In order for Delaware to maintain its Scrapie Consistent Status with USDA, the State Veterinarian encourages producers to submit adult sheep and goats that die on Delaware farms for free disposal and testing. If you are unable to bring the deceased animal to the Department of Agriculture in Dover, inspectors are able to arrange pickup at your Delaware farm. All adult animals will be tested for Scrapie.

This free program is one of the most practical resources available to small sheep and goat producers in Delaware — it resolves the disposal obligation and contributes to the state’s disease surveillance network simultaneously.

Emergency and Disease-Related Mortality Events

In the event of a large-scale mortality event tied to a reportable disease, USDA APHIS provides additional resources. The goal for waste management in these situations is to properly dispose of contaminated and potentially contaminated materials, including animal carcasses, as soon as possible while containing disease pathogens, protecting the environment, ensuring stakeholder acceptance, and maximizing cost effectiveness.

USDA APHIS provides indemnity and compensation to producers to remove animals APHIS classifies as affected, suspect, or exposed to diseases of concern, and to eliminate dangerous viruses from the environment. If you experience a sudden, unexplained mass mortality event, contact DDA immediately at 302-698-4500 before attempting disposal.

For additional context on how Delaware’s regulatory approach compares to neighboring states, see livestock disease reporting in Colorado and livestock disease reporting in Illinois. Delaware producers who also hold fishing licenses may find Delaware fishing license requirements useful for managing all their state compliance obligations in one place.

Biosecurity on a Delaware livestock operation is not a one-time task — it is a daily discipline. From registering your premises with DDA and isolating new arrivals for 30 days, to enforcing visitor sanitation protocols and disposing of mortalities promptly and properly, each layer of protection you put in place reduces the risk of a disease event that could cost you your entire operation. Review your biosecurity plan regularly, work closely with your accredited veterinarian, and stay current with DDA advisories and active control orders. The investment of time and effort is small compared to the consequences of an outbreak.